NOAA GEO GS SE RFI Attachment 8 MRD V2.1.pdf

Effective Date: October 21, 2024 410-XO-MRD-0008 Expiration Date: five years from date of last change Version: 2.1 Responsible Organization: GeoXO Program/Code 410

Check the GEO SharePoint site at https://nasa.sharepoint.com/sites/GEO to verify correct version prior to use.

Geostationary Extended Observations (GeoXO) Mission Requirements Document (MRD)

October 2024

Effective Date: January 2, 2024 410-XO-MRD-0008 Responsible Organization: GeoXO Program/Code 410 Version 2.0

Check the GEO SharePoint site at https://nasa.sharepoint.com/sites/GEO to verify correct version prior to use.

i

GeoXO

Signature Page

Prepared by:

Electronically approved by:

12/05/2023

Alexander Krimchansky GeoXO Lead Program System Engineer

Date

Reviewed by:

Electronically approved by Daniel Lindsey for: 11/28/2023

Andrew Heidinger GEO Scientist

Electronically approved by Christopher Wheeler for:

11/28/2023

Candace Carlisle GeoXO Flight Project Manager

Electronically approved by:

12/01/2023

Steven Grippando GeoXO Ground Segment Project Manager

Approved by:

Electronically approved by: 01/02/2024

Pamela Sullivan GeoXO System Program Director

Effective Date: October 21, 2024 410-XO-MRD-0008

Check the GEO SharePoint site at https://nasa.sharepoint.com/sites/GEO to verify correct version prior to use.

Document Change Record Page

Version CCR # Date DOORS ID #(s): Description

1.0 X00070A 06/29/2022 All Baseline

1.0 CMO 07/19/2022 Typo and grammatical updates

1.1 X00115 08/31/2022 Modify: MRD188, MRD366, Refining values from GXI studies and correcting typos (Related to Flight

GXIPORD CCR-X00117)

2.0 X00238 01/02/2024

Modify: MRD25, MRD27, MRD58, MRD167, MRD248, MRD258, MRD328, MRD331, MRD335, MRD337, MRD339, MRD422, MRD452, MRD470

Modify: MRD102, MRD283 [replaced original text with “Reserved“: DI retained for potential future use]

Add: MRD472

Delete: MRD103 through

MRD106, MRD284

through MRD288

Revision to capture the addition of the Data Collection Platform Command capability, remove Day Night Band Requirements, and perform updates associated with the completion of Phase A studies. (Associated with GSP PC- X00287)

2.1 X00300 10/21/2024

Modify: MRD258, 346, Clean up MRD to remove TBXs in MRD346 and MRD258 for MDR. Also cleaning up spectral range inconsistency within table 13 in MRD258.

2.1

CMO

Note

11/4/2024

Administrative changes to convert the automatic bullets, numbering and lettering to hard entries for MRD17, MRD19, MRD23, MRD189, and

MRD261.

Administrative changes to convert text tables to embedded MS Word OLEs for

MRD453, MRD87, MRD98, MRD108,

MRD117, MRD122, MRD188, MRD298,

MRD328, and MRD452.

Effective Date: October 21, 2024 410-XO-MRD-0008

Check the GEO SharePoint site at https://nasa.sharepoint.com/sites/GEO to verify correct version prior to use.

Administrative changes to invoke the Track Changes feature on the OLEs for MRD14 and MRD61.

Administrative changes to convert embedded MS Word 97-2003 OLEs to MS Word 2016 OLEs for MRD14, MRD58, MRD61, MRD231, MRD298, MRD328, MRD452.

Insert a blank space in blank hard returns for MRD17, MRD19, MRD23, MRD25, MRD50, MRD470, MRD59, MRD70, MRD81, MRD87, MRD94, MRD98, MRD108, MRD109, MRD117, MRD122, MRD125, MRD135, MRD148, MRD159, MRD167, MRD188, MRD196, MRD197, MRD247, MRD248, MRD293, MRD299, MRD305, MRD329, MRD335, MRD356, MRD360, MRD362, MRD370, MRD371, MRD374, MRD375, MRD377, MRD388, MRD389, MRD392, MRD396, MRD399, MRD422, MRD454, MRD464, MRD465, MRD466.

Administrative changes in MRD143, the word “via” is awkward and was replaced with “on”.

Administrative changes in MRD167, a period is missing after “Data Collection Platform Command (DCPC) links.”

Administrative changes to move legacy CCR references to their own line below the content for MRD27, MRD238, MRD167, MRD472, MRD331, MRD335, MRD337, MRD339, MRD366.

/GeoXO Program

MRD

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

Version: 2.1 Printed by: rkhoover Printed on: Tuesday, November 5, 2024

No filter applied.

No sort applied.

Generated from DOORS 9.7.2.4

Contents

1 1Introduction

1.1 1Document Scope

1.2 1Document Overview

1.3 1Requirements Terminology

1.4 1GeoXO Specification Hierarchy

2 3Documents

2.1 3Applicable Documents

2.2 3Reference Documents

3 4Mission Requirements

3.1 4Mission Overview

3.1.1 4Mission Objectives

3.1.2 5Mission Architecture

3.1.2.1 5Space Segment Description

3.1.2.2 5Launch Segment Description

3.1.2.3 6Ground Segment Description

3.1.3 6Concept of Operations Summary

3.2 6General Requirements

3.2.1 6Level 1 Schedule Requirements

3.2.1.1 6Lifetime

3.2.2 6Constellation Requirements

3.2.2.1 7Orbits

3.2.2.2 8High Availability Products

3.2.2.3 9Coverage Zones

3.2.3 10System Availability

3.2.3.1 10Space Segment Recovery after Spacecraft Maneuvers and Recovery after Outages

3.2.4 10Mission Continuity

3.2.5 11Reserved

3.2.6 11Safety

3.2.7 11System Standards

3.2.8 11Risk Classification

3.3 11Earth Observing Product Requirements

3.3.1 11Product Primary Instrument Sources

3.3.1.1 11Imaging Radiances

Project: GeoXO Program Module: MRD Baseline Version: 2.1

Contents ii

3.3.1.2 13Lightning Detection Events

3.3.1.3 13Reserved (CCR-X00238)

3.3.1.4 13Hyperspectral Infrared Radiances

3.3.1.5 15Atmospheric Composition Radiances

3.3.1.6 15Top of Atmosphere (TOA) Radiances for Water-Leaving Radiances (WLR) (for “Ocean Color”)

3.3.2 16Reserved

3.3.3 16Product Parameter Definitions

3.3.3.1 16Geographic Coverage

3.3.3.2 16Horizontal Resolution

3.3.3.3 17Navigation

3.3.3.4 17Product Refresh Time

3.3.3.5 17Mission Product Data Latency

3.3.3.6 17Product Parameter Verification Criteria

3.4 17Space Segment Requirements

3.4.1 17Spacecraft Payloads

3.4.2 18Launch Segment

3.4.3 18Security

3.4.4 18Space Segment Continuity during Eclipse

3.4.4.1 18Space Segment Autonomous Operations

3.4.5 18RF Communications

3.4.5.1 19Mission Space to Ground Communications

3.4.5.2 19Auxiliary Communications Services

3.4.5.2.1 19Data Collection System (DCS)

3.4.6 19Software

3.4.7 19Reserved

3.4.8 19Observational Payloads

3.4.8.1 19GeoXO Imager (GXI)

3.4.8.1.1 19GXI Imager Requirements

3.4.8.1.2 20GXI Operation Near the Sun

3.4.8.1.3 20GXI Lifetime

3.4.8.1.4 20GXI Types of Observations and Accuracies

3.4.8.1.5 24GXI Imager System Navigation

3.4.8.1.6 24GXI Data Format

3.4.8.1.7 24GXI Co-Registration

3.4.8.1.8 25GXI Pixel-to-Pixel Registration Within Frame

3.4.8.1.9 25GXI Frame-to-Frame Registration

3.4.8.1.10 25GXI Data Simultaneity

3.4.8.1.11 25GXI Full Operations

Contents iii

3.4.8.1.12 26GXI Reflected Solar Calibration

3.4.8.1.13 26GXI Emissive Infrared Calibration

3.4.8.1.14 26GXI Low-Light Imagery

3.4.8.1.15 26Reserved

3.4.8.2 26Lightning Mapper (LMX)

3.4.8.2.1 26LMX Coverage Area, Revisit, and Spatial Resolution

3.4.8.2.2 26LMX Operation Near the Sun

3.4.8.2.3 26LMX Lifetime

3.4.8.2.4 27LMX Types of Observations and Accuracies

3.4.8.2.5 27LMX System Navigation

3.4.8.2.6 27LMX Data Format

3.4.8.2.7 27Reserved

3.4.8.2.8 27Reserved

3.4.8.2.9 27Reserved

3.4.8.2.10 27LMX Data Simultaneity

3.4.8.2.11 27LMX Full Operations

3.4.8.2.12 27Reserved

3.4.8.3 27GeoXO Sounder (GXS)

3.4.8.3.1 27GXS Coverage Area, Revisit, and Spatial Resolution

3.4.8.3.2 28GXS Operation Near the Sun

3.4.8.3.3 28GXS Lifetime

3.4.8.3.4 29GXS Types of Observations and Accuracies

3.4.8.3.5 29GXS System Navigation

3.4.8.3.6 30Reserved

3.4.8.3.7 30GXS Co-Registration

3.4.8.3.8 30GXS Pixel-to-Pixel Registration Within Frame

3.4.8.3.9 30GXS Frame-to-Frame Registration

3.4.8.3.10 30GXS Data Simultaneity

3.4.8.3.11 30GXS Full Operations

3.4.8.3.12 30Reserved

3.4.8.3.13 30GXS Emissive Infrared Calibration

3.4.8.4 30Reserved (CCR-X00238)

3.4.8.5 30GeoXO Atmospheric Composition (ACX)

3.4.8.5.1 30ACX Coverage Area, Revisit, and Spatial Resolution

3.4.8.5.2 31Reserved

3.4.8.5.3 31ACX Lifetime

3.4.8.5.4 31ACX Types of Observations and Accuracies

3.4.8.5.5 31ACX System Navigation

Contents iv

3.4.8.5.6 32ACX Data Format

3.4.8.5.7 32ACX Co-Registration

3.4.8.5.8 32ACX Pixel-to-Pixel Registration Within Frame

3.4.8.5.9 32ACX Frame-to-Frame Registration

3.4.8.5.10 32ACX Data Simultaneity

3.4.8.5.11 32ACX Full Operations

3.4.8.5.12 32ACX Calibration

3.4.8.6 33GeoXO Ocean Color Imager (OCX)

3.4.8.6.1 33OCX Coverage Area, Revisit, and Spatial Resolution

3.4.8.6.2 33Reserved

3.4.8.6.3 33OCX Lifetime

3.4.8.6.4 33OCX Types of Observations and Accuracies

3.4.8.6.5 34OCX System Navigation

3.4.8.6.6 34OCX Data Format

3.4.8.6.7 34OCX Co-Registration

3.4.8.6.8 34OCX Pixel-to-Pixel Registration Within Frame

3.4.8.6.9 34OCX Frame-to-Frame Registration

3.4.8.6.10 34OCX Data Simultaneity

3.4.8.6.11 34OCX Full Operations

3.4.8.6.12 35OCX Calibration

3.4.8.7 35Reserved

3.4.8.8 35Partner Payload

3.5 35Reserved

3.6 35Ground Segment Requirements

3.6.1 35General Ground Segment Requirements

3.6.2 36Mission Management

3.6.3 37Product Generation

3.6.4 37Product Distribution

3.6.5 38Ground Segment Design and Construction

3.6.6 38Integrated Logistics

3.6.6.1 38Maintenance

3.6.6.2 38Training

4 39Validation and Verification

5 40Definitions

6 44Acronyms

Contents v

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410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

1 Introduction

1.1 Document Scope

This document provides the Level IIa interface, functional, and performance requirements for the Geostationary Extended Observations (GeoXO) Series mission.

The GeoXO requirements are traceable to NOAA/NESDIS GeoXO Program Level Requirements and as such are the source for all lower level requirements.

1.2 Document Overview

This mission specification is comprised of three primary sections. Section 1 of this document provides the introduction including the GeoXO specification hierarchy.

Section 2 provides the applicable and reference documents. Section 3 of the document is the core, listing the mission requirements including: system overview, system requirements, functional segment requirements, external interface requirements, performance requirements, and maintenance requirements. Section 4 refers to the documents describing how these requirements will be Verified and Validated. Sections 5 and 6 are references for definitions, abbreviations, and acronyms used throughout.

1.3 Requirements Terminology

The following requirements terminology is used throughout this document:

The use of “shall” designates a requirement that must be met.

The use of “will” designates a statement of fact or intention of the government.

The use of “may” designates that permission has been granted by the government.

The term “(TBD)” means, “to be determined” and is used when no value is available with subsequent study needed to obtain it.

The term “(TBR)” means “to be refined/reviewed” for a value that is subject to review for appropriateness and is subject to revision. The vendor is liable for compliance with the information marked “TBR” as if the “TBR” notation did not exist.

1.4 GeoXO Specification Hierarchy

The requirements of this specification are derived from the GeoXO Program Level Requirements (PLR), also commonly referred to as the Level I Requirements Document (LIRD) [Applicable Document 1]. This document will comply with NASA standard requirement nomenclature and refer to the Program Level Requirements/LIRD as Level I Requirements and the document as the LIRD. This specification provides the source document for the requirement allocation to lower specifications shown in Table 1.

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Table 1: GeoXO Requirements Document Reviews and Approvals

Requirements Level

Baseline Document

Document Custodian and Control Process

Reviewing Body

Approving Body

NOAA/NESDIS

Level

NESDIS

Level Requirements Document

(NESDIS-

REQ-1001.1)

OSAAP NOSC DUS/O

Program (Level I)

GeoXO Program Level Requirements (PLR) / Level I Requirements Document

(LIRD)

OSAAP

NESDIS

Executive Council

NESDIS AA

Level II

GeoXO Program Management Plan

Program Systems Engineering

(PSE)

NESDIS

AA/DAAS

NASA

Goddard Space Flight Center

(GSFC)

CMC

NESDIS AA,

NASA HQ

SMD,

NASA GSFC

Center Director

Level II-a

Mission Requirements Document

(MRD)

PSE

GeoXO Program

GeoXO SPD

Level III GeoXO Project Plans

GeoXO Projects

GeoXO Program

NESDIS

DAAS

GeoXO SPD, GSFC & HQ

Level III-a

Project Level Interface Documents & Functional Specifications

GeoXO Projects

GeoXO Program

GeoXO Project Managers

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2 Documents

2.1 Applicable Documents

The following documents form a part of this specification to the extent specified herein. In the event of conflict between the documents referenced herein and the contents of this specification, the contents of this specification are considered the superseding requirements.

1. NESDIS-REQ-4301.1/ 410-XO-LIRD-0007, Geostationary Extended Observations (GeoXO) Program Level Requirements (PLR) / Level I Requirements Document (LIRD)

• For consistency with NASA procedures, this document may be called interchangeably “PLR” or “Level I Requirements Document”, “Level I”, and “LIRD”.

2. NASA STD 8719.14, Process for Limiting Orbital Debris

3. U.S. Department of Homeland Security (DHS) Federal Emergency

Management Agency (FEMA) Federal Continuity Directive 1 (FCD-1), Annex G, Alternate Locations

4. 29 U.S.C. 794d, Section 508 of the Rehabilitation Act of 1973, as amended

5. Consultative Committee for Space Data Systems, Recommendation for Space

Data System Standards, Blue Book, TC Synchronization and Channel Coding, Recommended Standard, Issue 3, September 2017, Specification CCSDS 231.0-B-3

6. Consultative Committee for Space Data Systems, Recommendation for Space Data System Standards, Blue Book, AOS Space Data Link Protocol, Recommended Standard, Issue 3, September 2015, Specification CCSDS 732.0-B-3

7. IEEE/ASTM SI-10 - American National Standard for Metric Practice, 2016

8. Code of Federal Regulations (CFR) 47 – Telecommunication, Part 15 – Radio

Frequency Devices, Subpart B – Unintentional Radiators, Section 15.109 – Radiated Emission Limits

9. NASA Procedural requirements, Risk Classification of NASA Payloads, NPR 8705.4A

10. Space Segment to DCS IRD, 418-XO-IRD-0044

11. GeoXO SS to Ground Located Command, Control, & Communications (SS-C3S)

IRD, 418-XO-IRD-0043

12. OMB Memorandum M-05-22

13. NESDIS IT Security Handbook

14. GS to Data Collection System (DCS) IRD, 416-GEO-IRD-0131

15. GS to NESDIS Common Cloud Framework (NCCF) Interface Requirement

Document, 416- GEO -IRD-0102

16. GeoXO Program Verification and Validation Plan, 410-XO-PLN-0014

2.2 Reference Documents

The following documents are listed below for reference purposes only.

1. GeoXO Concept of Operations (CONOPS), 410-XO-CONOPS-0004

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3 Mission Requirements

3.1 Mission Overview

3.1.1 Mission Objectives

Two Government identified Primary Mission Essential Functions (PMEFs) for DOC are the responsibility of NOAA and are critically dependent on the satellite systems acquired and operated by NESDIS:

• DOC #2: Provide Satellite Imagery: Collect and provide the Nation with critical intelligence data, imagery, and other essential information for predictive environmental and atmospheric modeling systems and space-based distress alert systems by operating NOAA-controlled satellites, communications equipment, and associated systems; and,

• DOC #3: Provide Meteorological Forecasts: Provide the Nation with environmental forecasts, warnings, data, and expertise critical to public safety, disaster preparedness, all hazards response and recovery, the national transportation system, safe navigation, and the protection of the Nation’s critical infrastructure and natural resources.

Global observations of the Earth system (atmosphere, oceans, land and ice surfaces, and the biosphere) are the foundation for meeting the DOC PMEFs and NOAA mission.

Observations from space are a key component of the Earth observing system and are the major observation types that determine the accuracy of weather forecasts in the time range of up to two weeks and support now casts and warnings associated with severe weather events. These observations are critical for atmospheric characterization to improve weather and climate understanding and forecasting, and vital for marine and coastal ecosystem and resources management.

GeoXO capabilities will:

• Support existing, and improved, severe weather forecasting and warnings capabilities, and the DOC’s PMEFs and NOAA mission

• Support national priorities for weather forecasting

• Improve forecasting and warning systems globally

• Support an integrated earth observing system providing accurate and reliable data

• Continue commitment to the Coordinating Group on Meteorological Satellites Baseline

• Support World Meteorological Organization’s strategic vision

• Support better initialization of NOAA’s national air quality forecasting capability and hazard and fire forecasting and warnings

• Support coastal and ocean resource management and the identification of harmful algal bloom and hypoxia conditions

• Support Ocean and Coastal Blue economy initiatives

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3.1.2 Mission Architecture

The GeoXO System shown in Figure 1 consists of segments for space and launch and for ground. A brief description of the segments is contained in the following paragraphs. A more detailed description is contained in the GeoXO Concept of Operations (CONOPS), 410-XO-CONOPS-0004 [Reference Document 1].

Figure 1: GeoXO Constellation

(CCR-X00238)

3.1.2.1 Space Segment Description

The Space Segment consists of the spacecraft bus, instrument payload, and associated communications equipment. There will be three Government Owned Spacecraft, two flying in the East/West positions and one flying in the Central position in Geostationary Orbit. The spacecraft will be 3-axis stabilized and capable of the fine pointing control necessary for mission requirements. The Primary instrument of the GeoXO space segment is the GeoXO Imager (GXI) that will provide climatic, synoptic, and mesoscale imagery for global and Continental United States (CONUS) forecasting and severe weather warning. The GXI is only located in the East and West orbital locations. Other instruments on the East and West satellites will consist of the Lightning Mapper (LMX) and the Ocean Color Imager (OCX). Coverage from both satellites is needed to provide full coverage for imaging, lightning mapping, and ocean color. These two satellites will be referred to as GeoI. Additionally, GeoI will provide auxiliary communication services in support of the Data Collection System (DCS). On the GeoXO Center satellite, the GeoXO Hyperspectral IR Sounder (GXS) and Atmospheric Composition (ACX) will be flown. In addition to these two instruments, a Partner Instrument, should it be provided, will be flown. This satellite will be referred to as GeoS.

(CCR-X00238)

3.1.2.2 Launch Segment Description

The Launch Segment provides those assets and services associated with the launch vehicle (LV) and the payload integration. Included, along with the LV are all the ground support equipment, property, and facilities to integrate the spacecraft to the LV, verify their integration, conduct pre-launch testing with the ground system, and launch operations.

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3.1.2.3 Ground Segment Description

The GEO Ground Segment (GS) is comprised of three functional architectural categories: Mission Management, Product Generation, and Product Distribution. These categories have been defined as a basis for grouping functional elements and are not intended to specify implementation or design.

The Mission Management (MM) functional grouping includes mission scheduling, satellite (spacecraft and instrument) operations, satellite state-of-health trending, orbital analysis, and ground system operations. The Product Generation (PG) functional grouping includes algorithm support, processing of raw science data, and processing to Level 1b (including calibration, navigation and registration). The Product Distribution (PD) grouping includes the distribution of Level 0 and Level 1b products to the NESDIS Common Cloud Framework (NCCF) for distribution, stewardship, and further processing. GeoXO High Rate Data (see section 5 Definitions), GeoXO Medium Rate Data (see section 5 Definitions), and DCS data will also be available via NCCF.

3.1.3 Concept of Operations Summary

This section offers a description of the East/West and Center satellites and where the GEO Ground Segment is expected to operate during the lifetime of the GeoXO mission extending from 2032 through at least 2050 (or the equivalent duration if starting later).

GeoXO Satellites will have a total of six operational locations, as summarized in Table

2. The expected operational locations for the GeoI Satellites are 75°W (further referred to as East) and 137°W (further referred to as West). The expected operational location for GeoS is 105°W (further referred to as Center). Any GeoXO satellite stored on-orbit will be located at 94°W, with any secondary storage at 92°W.

The location for testing on orbit (check-out) is 88°W. Data from the instruments are packetized in CCSDS data format and transmitted via X-band to Wallops Command and Data Acquisition Station and a Consolidated Backup facility (CBU), formerly known as Remote Backup facility (RBU).

The GEO Ground Segment will operate from three sites: the NOAA Satellite Operations Facility (NSOF) in Suitland, MD, the Wallops Command and Data Acquisition Station (WCDAS), and CBU located at a geographically diverse site of Fairmont, WV. This remote site location will have visibility to operational and on-orbit satellites. The Enterprise Management (EM) function lies over all GEO Ground Segment components and locations.

Full detail of the concept of operations is contained in the GeoXO Concept of Operations (CONOPS), 410-XO-CONOPS-0004 [Reference Document 1].

3.2 General Requirements

3.2.1 Level 1 Schedule Requirements

3.2.1.1 Lifetime

The GeoXO System shall provide an individual satellite lifetime of 5 years on-orbit storage and 10 years of operations for each satellite in the series.

3.2.2 Constellation Requirements

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3.2.2.1 Orbits

Table 2. Summary Satellite Location Table (For Reference Only)

Satellite Orbit Location Location East (GeoI) 75° W West (GeoI) 137° W

Central (GeoS) 105° W Storage Location 1 94° W Storage Location 2 92° W

Check-out 88° W

The GeoXO System shall position GeoI satellites at 75° West longitude and 137° West longitude at geosynchronous altitude during nominal operations.

The GeoXO System shall position the GeoS satellite at 105° West longitude at geosynchronous altitude during nominal operations.

The GeoXO System shall operate satellites at 88° West longitude at geosynchronous altitude for initial satellite checkout.

The GeoXO System shall operate satellites at 94° West longitude at geosynchronous altitude from the primary storage location for on-orbit storage and periodic check-out.

The GeoXO System shall operate satellites at 92° West longitude at geosynchronous altitude from the secondary storage location for on-orbit storage and periodic check-out.

The GeoXO System shall be capable of operating satellites and producing products within +/-0.5 degrees of their reference longitude.

The GeoXO System shall generate Level 1b products for any GeoXO satellite located between 65° West and 147° West.

Rationale: Both the GeoXO Space Segment and Ground Segment must be capable of generating satellite data products regardless of the satellite's operational location in the range of orbital locations identified.

The GeoXO System shall provide emergency backup observations between 5° West and 147° West in support of international backup agreements.

The GeoXO System shall dispose of satellites in accordance with NASA STD 8719.14, “Process for Limiting Orbital Debris” [Applicable Document 2].

The GeoXO System shall control the satellites to within +/- 0.2 degree in latitude and longitude at the equator for the nominal operational and checkout orbits.

The GeoXO System shall relocate each satellite between the checkout location and the storage location.

The GeoXO System shall relocate each satellite between the storage location and the operational locations.

The GeoXO System shall relocate each satellite between the two nominal operational locations.

Page 8 of 46 Printed Tuesday, November 5, 2024

ID

MRD56

MRD470

MRD57

MRD58

Object Number

3.2.2.1.0-15

3.2.2.1.0-16

3.2.2.2

3.2.2.2.0-1

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

The GeoXO Space Segment satellites shall transition from storage mode at the storage location to operational mode at either operational location within 21 days.

The program shall design and develop plans for GeoXO user facing comm services equivalent to the heritage GOES-R GRB (GeoXO High Rate), EMWIN/HRIT (GeoXO Medium Rate), and DCS services.

Rationale: GeoXO High Rate, GeoXO Medium Rate, DCS services will be operated by OSPO or OSGS.

(CCR-X00238)

3.2.2.2 High Availability Products

The GeoXO System shall generate Level 1b (L1b) products as identified in Table 3 below. High Availability Products (HAP) are L1b mission critical products created with availability levels as defined in Section 3.2.3.

Table 3: GeoXO System GEO Environmental L1b Products

L1b Product L1b High

Availability Imaging Radiance subset for GeoXO HAP generation as defined in Table 11 (Imaging Radiances) Yes

Imaging Radiance subset not contributing to GeoXO HAP No

Lightning Detection – Events No

Hyperspectral Infrared Radiances No

Atmospheric Composition Radiances No

Top of Atmosphere Radiances for Water-Leaving Radiances (for “Ocean Color”) No

(CCR-X00238)

Page 9 of 46 Printed Tuesday, November 5, 2024

ID

MRD59

MRD60

MRD61

Object Number

3.2.2.2.0-2

3.2.2.3

3.2.2.3.0-1

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

The GeoXO System shall provide operational earth Radiances within the minimum coverage area bounded by latitude 68° North to 68° South and longitude 150° East eastward to 2° West to meet HAP coverage, as shown in Figure 2.

Figure 2: GEO Imagery Minimum Coverage Area of 68° N to 68° S, 150°E eastward to 2°W.

3.2.2.3 Coverage Zones

Government Satellite coverage zones are defined in Table 4. Figure 3 shows the coverage from Central for Sounding.

Table 4 – Government Satellite Coverage Zone Definitions Table

Station Coverage Zone West (GeoI) (137° W)

Latitude: From 68° North to 68° South Longitude: From 150° East to 64° West

Central (GeoS) (105° W)

Latitude: From 45° North to 45° South Longitude: From 155° West to 55° West

East (GeoI) (75° W)

Latitude: From 68° North to 68° South Longitude: From 148° West to 2° West

Page 10 of 46 Printed Tuesday, November 5, 2024

ID

MRD61

MRD62

MRD63

MRD64

MRD65

MRD66

MRD67

MRD68

MRD69

MRD70

MRD71

Object Number

3.2.2.3.0-1

3.2.3

3.2.3.0-1

3.2.3.0-2

3.2.3.0-3

3.2.3.0-4

3.2.3.1

3.2.3.1.0-1

3.2.3.1.0-2

3.2.3.1.0-3

3.2.4

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

Figure 3. Sounding coverage area bounded by latitude 45°N to 45°S and 155° W to 55°W at the nominal 105°W location.

3.2.3 System Availability

The GeoXO System shall have an availability of 0.90 each month for HAP at the East and West geosynchronous orbital locations, over System lifetime.

The GeoXO System shall have a Maximum Time to Restore Service (MaxTTRS) of 3 weeks for HAP L0 data in the event of a failure of an instrument requiring replacement where a replacement is available.

The GeoXO System shall achieve a threshold probability of 0.50 for maintaining mission availability of operational data over the operational lifetime for the specified operational coverage area for non-HAP L0 data.

The GeoXO System shall provide a replacement satellite for non-HAP L0 data within 4 years, if a failure of instrument(s) providing non-HAP L0 data occurs.

3.2.3.1 Space Segment Recovery after Spacecraft Maneuvers and Recovery after Outages

The GeoXO Space Segment shall not have an outage of more than 3 hours per year per spacecraft due to housekeeping and yaw-flip maneuvers.

The GeoXO Space Segment shall not have a single outage of more than 90 minutes per year per spacecraft.

When operational, the GeoXO System shall provide continuous sensor data for ground generation of non-HAP L0 data with outages less than 70 hours per year and no single outage exceeding 24 hours.

Rationale: This is the acceptable downtime for non-HAP L0 data.

3.2.4 Mission Continuity

Page 11 of 46 Printed Tuesday, November 5, 2024

ID

MRD72

MRD73

MRD74

MRD75

MRD76

MRD77

MRD78

MRD79

MRD80

MRD81

MRD84

MRD85

MRD455

MRD86

MRD87

Object Number

3.2.4.0-1

3.2.5

3.2.6

3.2.6.0-1

3.2.7

3.2.7.0-1

3.2.7.0-2

3.2.7.0-3

3.2.8

3.2.8.0-1

3.3

3.3.1

3.3.1.0-1

3.3.1.1

3.3.1.1.0-1

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

The GeoXO System shall operate continuously using primary and alternate facilities as defined in U.S. Department of Homeland Security (DHS) Federal Emergency Management Agency (FEMA) Federal Continuity Directive 1 (FCD-1), Annex G, Alternate Locations [Applicable Document 03].

3.2.5 Reserved

3.2.6 Safety

The GeoXO System shall comply with Section 508 of the Rehabilitation Act (29 USC 749d) as amended. [Applicable Document 4].

3.2.7 System Standards

The GeoXO System shall comply with the Consultative Committee for Space Data Systems (CCSDS) recommendations [Applicable Documents 5 and 6].

The GeoXO System shall employ International System of Units (SI) in accordance with IEEE/ASTM SI-10 - American National Standard for Metric Practice, 2016 [Applicable Document 7].

The GeoXO System shall comply with the electromagnetic interference (EMI) requirements of FCC rules CFR 47, Part 15, Subpart B, Section 15.109 for Class A or B radiated emissions [Applicable Document 8].

3.2.8 Risk Classification

The GeoXO spacecraft bus and GXI risk classification will be Class B to support HAP;

other instruments will be tailored Class C per NPR 8705.4A [Applicable Document 9].

Rationale: Class B classification drives reliability, redundancy, and fault management.

3.3 Earth Observing Product Requirements

3.3.1 Product Primary Instrument Sources

For the purposes of this document, Super-Regional refers to a 5000 km x 3000 km block that includes coverage of the CONUS, Mesoscale refers to 1000 km × 1000 km area that can vary in location within the imaging or sounding full disk areas, and SFD refers to a hemispheric view of the earth described in the geographic coverage requirement.

3.3.1.1 Imaging Radiances

The GeoXO System will observe the earth Imaging Radiances, which are summarized for reference only in Table 5 below.

Page 12 of 46 Printed Tuesday, November 5, 2024

ID

MRD87

MRD88

MRD89

MRD90

MRD91

MRD92

MRD93

MRD94

MRD95

Object Number

3.3.1.1.0-1

3.3.1.1.0-2

3.3.1.1.0-3

3.3.1.1.0-4

3.3.1.1.0-5

3.3.1.1.0-6

3.3.1.1.0-7

3.3.1.1.0-8

3.3.1.1.0-9

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

Table 5: Imaging Radiances (Reference)

Parameter Value

Geographic coverage Imaging Full Disk

Imaging Super-Regional

Two commandable Imaging Mesoscale areas within the Imaging Full Disk

Spatial Resolution (nadir): IR and VNIR (See Table 11)

Spectral Bands: IR and VNIR (See Table 11)

Refresh / Update for Full Disk 10 min

Refresh / Update for Super-Regional 5 min

Refresh / Update for moveable Mesoscale (movable 1000 km x 1000 km), as commanded

30 sec

Mission Product Data Latency for Full Disk 60 sec

Mission Product Data Latency for Super-Regional 60 sec

Mission Product Data Latency for Mesoscale 30 sec

The GeoXO System shall provide Level 1b Imaging Radiances for the Imaging Full Disk coverage area.

The GeoXO System shall provide Level 1b Imaging Radiances for the Imaging Super- Regional coverage area.

The GeoXO System shall provide Level 1b Imaging Radiances for the Imaging Mesoscale coverage area.

The GeoXO System shall provide Level 1b Imaging Radiances for the Full Disk in 10 minutes, including all observations needed for calibration and navigation.

The GeoXO System shall provide Level 1b Imaging Radiances for the Super-Regional region to update in 5 minutes, including all observations needed for calibration and navigation.

The GeoXO System shall provide Level 1b Imaging Radiances for at least two commandable Mesoscale regions, where a mesoscale updates in 30 seconds including all observations needed for calibration and navigation.

The GeoXO System shall make available Level 1b Imaging Radiances for the Full Disk region within a Mission Product Data Latency of 60 sec.

Note: See definition of Mission Product Data Latency in section 3.3.3.5

The GeoXO System shall make available Level 1b Imaging Radiances for the Super- Regional region within a Mission Product Data Latency of 60 sec.

Page 13 of 46 Printed Tuesday, November 5, 2024

ID

MRD96

MRD97

MRD98

MRD99

MRD100

MRD101

MRD102

MRD107

MRD108

Object Number

3.3.1.1.0-10

3.3.1.2

3.3.1.2.0-1

3.3.1.2.0-2

3.3.1.2.0-3

3.3.1.2.0-4

3.3.1.3

3.3.1.4

3.3.1.4.0-1

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

The GeoXO System shall make available Level 1b Imaging Radiances for a Mesoscale region within a Mission Product Data Latency of 30 sec.

3.3.1.2 Lightning Detection Events

The GeoXO System will observe earth Lightning events, as summarized for reference only in Table 6.

Table 6: Lightning Detection Events (Reference)

Parameter Value Geographic coverage (fixed coverage areas)

Lightning Full Disk (LFD) of 82% of visible earth

Spatial Resolution (nadir): VNIR (See Table 12) Spectral Bands: VNIR (See Table 12) Data collection rate for LFD 2 msec

Refresh for Level 1b 20 sec

Mission Product Data Latency 20 sec

The GeoXO Series shall provide Level 1b Lightning Detection Events within the Lightning Full Disk (LFD) coverage area of 82% of Visible Earth area seen from GEO (flat 17.4° diameter disk).

The GeoXO system shall provide Level 1b Lightning Detection Events over the LFD at a refresh rate of 20 sec.

The GeoXO System shall make available Level 1b Lightning Detection Events within a Mission Product Data Latency of 20 sec.

3.3.1.3 Reserved (CCR-X00238)

3.3.1.4 Hyperspectral Infrared Radiances

The GeoXO System will observe earth Hyperspectral Infrared Radiances, as summarized for reference only in Table 8.

Rationale: Hyperspectral refers to many contiguous channels.

Page 14 of 46 Printed Tuesday, November 5, 2024

ID

MRD108

MRD109

MRD110

MRD111

MRD112

MRD113

MRD114

MRD115

Object Number

3.3.1.4.0-1

3.3.1.4.0-2

3.3.1.4.0-3

3.3.1.4.0-4

3.3.1.4.0-5

3.3.1.4.0-6

3.3.1.4.0-7

3.3.1.4.0-8

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

Table 8: Hyperspectral Infrared Radiances (Reference)

Parameter Threshold

Geographic coverage (commandable coverage areas)

Sounding Full Disk (SFD) or equivalent area in equivalent time (See table in rationale for MRD248)

Spatial Resolution (nadir): IR (See Table 13)

Spectral Bands: 2 IR bands covering spectral regions

Temperature regions (IR) Moisture regions (IR) Window regions (IR) Trace gas regions (IR) (See Table 13)

Refresh / Update for Sounding Full Disk 120 min

Refresh / Update for Sounding Super-Regional Area 60 min

Refresh / Update for Each Commandable Sounding Mesoscale Areas 7 min for each meso

Mission Product Data Latency for Sounding Full Disk 240 sec

Mission Product Data Latency for Sounding Super- Regional

240 sec

Mission Product Data Latency for Sounding Mesoscale

240 sec

The GeoXO System shall provide Level 1b earth Hyperspectral Infrared Radiances within the SFD minimum coverage area of 62° local zenith angle (LZA), as commanded.

Rationale: Retrievals degrade beyond this coverage area.

The GeoXO System shall provide Level 1b earth Hyperspectral Infrared Radiances of the SFD in 120 minutes as commanded, and all observations needed for calibration and navigation.

The GeoXO System shall provide Level 1b earth Hyperspectral Infrared Radiances for the Super-Regional area in 60 minutes as commanded, and all observations needed for calibration and navigation.

The GeoXO System shall provide Level 1b earth Hyperspectral Infrared Radiances for up to two commandable Mesoscale regions, where a single Mesoscale updates in 7 minutes including all observations needed for calibration and navigation.

The GeoXO System shall make available Level 1b Hyperspectral Infrared Radiances for the SFD region within a Mission Product Data Latency of 240 sec.

The GeoXO System shall make available Level 1b Hyperspectral Infrared Radiances for the Super-Regional region within a Mission Product Data Latency of 240 sec.

The GeoXO System shall make available Level 1b Hyperspectral Infrared Radiances for a Mesoscale region within a Mission Product Data Latency of 240 sec.

Page 15 of 46 Printed Tuesday, November 5, 2024

ID

MRD116

MRD117

MRD118

MRD119

MRD120

MRD121

MRD122

Object Number

3.3.1.5

3.3.1.5.0-1

3.3.1.5.0-2

3.3.1.5.0-3

3.3.1.5.0-4

3.3.1.6

3.3.1.6.0-1

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

3.3.1.5 Atmospheric Composition Radiances

The GeoXO System will observe the earth Atmospheric Composition (AC) Radiances, which are summarized for reference only in Table 9.

Table 9: Atmospheric Composition Radiances (Reference)

Parameter Threshold

Geographic coverage Superregional observing CONUS

Spatial Resolution (nadir): UV and VNIR (nadir)

(See Table 15)

Spectral Bands:

UV and VNIR

(See Table 15)

Refresh / Update for AC Super- Regional

60 min

Mission Product Data Latency for

CONUS

660 sec

The GeoXO Series shall provide Level 1b earth Atmospheric Composition Radiances within a Super-Regional centered on CONUS.

The GeoXO System shall provide Level 1b earth Atmospheric Composition Radiances of Superregional to refresh in 60 minutes, including all observations needed for calibration and navigation.

The GeoXO System shall make available Level 1b Atmospheric Composition Radiances for the Super-Regional region within a Mission Product Data Latency of 660 seconds.

3.3.1.6 Top of Atmosphere (TOA) Radiances for Water-Leaving

Radiances (WLR) (for “Ocean Color”)

The GeoXO System will observe the earth Top of Atmosphere Radiances for Water- Leaving Radiances, which are summarized for reference only in Table 10.

Page 16 of 46 Printed Tuesday, November 5, 2024

ID

MRD122

MRD123

MRD124

MRD125

MRD126

MRD127

MRD128

MRD129

MRD130

MRD131

Object Number

3.3.1.6.0-1

3.3.1.6.0-2

3.3.1.6.0-3

3.3.1.6.0-4

3.3.1.6.0-5

3.3.2

3.3.3

3.3.3.1

3.3.3.1.0-1

3.3.3.2

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

Table 10: Top of Atmosphere Radiances for Water-Leaving Radiances (Reference)

Parameter Threshold

Geographic coverage US EEZ along the Atlantic, Pacific, and Gulf of Mexico coasts, Puerto Rico, primary Hawaiian islands, US Great Lakes, and southern Alaska, excluding the Aleutian Islands.

Commandable regions of interests (instead of regions above)

Spatial Resolution (nadir): VNIR (See Table 16)

Spectral Bands:

VNIR

(See Table 16)

Refresh / Update 210 min

Mission Product Data Latency 600 sec

The GeoXO Series shall provide Level 1b Top of Atmosphere Radiances for Water- Leaving Radiances within the minimum coverage area including the US Exclusive Economic Zone (EEZ) plus Gulf of Mexico, Puerto Rico, the primary Hawaiian Islands, US Great Lakes, and southern Alaska (excluding the Aleutian Islands).

The GeoXO System shall provide Level 1b Top of Atmosphere Radiances for Water- Leaving Radiances for the Water-Leaving Radiances Coverage Area to refresh in 210 minutes, including all observations needed for calibration and navigation.

The GeoXO System shall provide Level 1b Top of Atmosphere Radiances for Water- Leaving Radiances for the Water-Leaving Radiances Coverage Area for commandable regions of interest, including all observations needed for calibration and navigation.

Rationale: NESDIS PLR requires commandable regions within the instrument FOR beyond the EEZ regions identified above. The coverage of these commandable regions will be based on need and interest and will reflect the instrument coverage rate (namely instead of EEZ area listed above, if needed by NOAA.)

The GeoXO System shall make available Level 1b Top of the Atmosphere Radiances for Water-Leaving Radiances within a Mission Product Data Latency of 600 seconds.

3.3.2 Reserved

3.3.3 Product Parameter Definitions

3.3.3.1 Geographic Coverage

Geographic coverage is defined as the size of the area that must be observed in the revisit time in order to generate the product.

3.3.3.2 Horizontal Resolution

Page 17 of 46 Printed Tuesday, November 5, 2024

ID

MRD132

MRD133

MRD134

MRD135

MRD136

MRD137

MRD138

MRD139

MRD140

MRD141

MRD142

MRD143

MRD144

MRD145

MRD146

MRD147

Object Number

3.3.3.2.0-1

3.3.3.3

3.3.3.3.0-1

3.3.3.3.0-2

3.3.3.4

3.3.3.4.0-1

3.3.3.4.0-2

3.3.3.4.0-3

3.3.3.5

3.3.3.5.0-1

3.3.3.6

3.3.3.6.0-1

3.4

3.4.0-1

3.4.0-2

3.4.1

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

Horizontal resolution is defined as the finest horizontal spatial element of the product measured at nadir.

3.3.3.3 Navigation

Navigation is defined as the accuracy of the geolocation of collected data to the appropriate earth or other reference frame.

The GeoXO System will navigate the GeoXO series Level 1b data (which meets instrument image navigation and registration requirement for earth-looking instruments).

Note: The navigation requirements are applicable during nominal operations.

3.3.3.4 Product Refresh Time

Product Refresh Time is defined as the time between the completion of the nth update of the product and the completion of the (n+1)th update of the same product.

The mission product will be refreshed by the GeoXO system, while meeting the mission product data latency, when new data from the product coverage region is available.

Discussion: The GeoXO baseline product tables list refresh times for products.

However, GXI data may be produced more frequently than the listed times, particularly due to the different scan modes of GXI.

3.3.3.5 Mission Product Data Latency

Mission Product Data Latency is product dependent and is defined as the time from the collection of the last photons through the time that the data is converted to Level 1b and made available to the NCCF.

3.3.3.6 Product Parameter Verification Criteria

The product parameter requirements in Section 3.3 of the MRD will be verified based on the following classes of criteria: Not To Exceed (NTE), 1-sigma and 3-sigma (distribution statistics, at less than |μ+3σ| or |μ+ σ|).

Radiometric Calibration: 1σ Product Navigation: 3σ Product Refresh Time: NTE Mission Product Data Latency: 3σ

3.4 Space Segment Requirements

The GeoXO Space Segment shall employ spacecraft with a reliability of at least 0.73 after 15 years

Reliability is defined as the probability that each spacecraft performs its required functions over a fifteen-year period (five years on-orbit storage plus ten years on-orbit operation). The required performance of the spacecraft includes all functionality required to produce HAP user products.

3.4.1 Spacecraft Payloads

Page 18 of 46 Printed Tuesday, November 5, 2024

ID

MRD148

MRD149

MRD150

MRD151

MRD152

MRD153

MRD154

MRD155

MRD156

MRD157

MRD158

MRD159

MRD160

Object Number

3.4.1.0-1

3.4.2

3.4.2.0-1

3.4.2.0-2

3.4.2.0-3

3.4.3

3.4.3.0-1

3.4.3.0-2

3.4.4

3.4.4.0-1

3.4.4.1

3.4.4.1.0-1

3.4.5

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

The GeoXO System shall operate the following instruments and auxiliary communication payloads at the following geosynchronous orbital locations:

East/West (GeoI)

a) GeoXO Imager (GXI)

b) GeoXO Lightning Mapper (LMX)

c) GeoXO Ocean Color Imager (OCX)

d) Auxiliary Communication Services

i. Data Collection System (DCS)

Center (GeoS)

a) GeoXO Hyperspectral IR Sounder (GXS)

b) GeoXO Atmospheric Composition (ACX)

c) Partner Payload

3.4.2 Launch Segment

The GeoXO Space Segment shall employ NASA’s Launch Services Program vehicles for all launches.

The GeoXO System shall maintain continuous telemetry functions during all mission-critical events.

The GeoXO System shall maintain continuous command functions during all mission-critical events that are subsequent to the separation from the launch vehicle

3.4.3 Security

The GeoXO System shall encrypt Space Segment commands as needed.

The GeoXO Space Segment shall operate with encrypted and unencrypted commands.

3.4.4 Space Segment Continuity during Eclipse

The GeoXO Space Segment shall meet all Level 1b product performance requirements during eclipse periods in geosynchronous orbit for all data acquired outside of instrument designated zones of reduced data quality.

3.4.4.1 Space Segment Autonomous Operations

The GeoXO Space Segment shall autonomously provide real-time instrument data without command contact between Space and Ground segments for a period of 7 days.

Rationale: This implies autonomous operations without Ground intervention.

3.4.5 RF Communications

Page 19 of 46 Printed Tuesday, November 5, 2024

ID

MRD161

MRD162

MRD163

MRD164

MRD165

MRD167

MRD83

MRD472

MRD168

MRD169

MRD170

MRD171

MRD172

MRD173

MRD174

MRD175

Object Number

3.4.5.0-1

3.4.5.1

3.4.5.1.0-1

3.4.5.2

3.4.5.2.1

3.4.5.2.1.0-1

3.4.5.2.1.0-2

3.4.5.2.1.0-3

3.4.6

3.4.6.0-1

3.4.7

3.4.8

3.4.8.1

3.4.8.1.1

3.4.8.1.1.0-1

3.4.8.1.1.0-2

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

Details of the Raw Data Down Link, Housekeeping Telemetry, Commanding, Orbit Raising uplink, and Orbit Raising downlink are found in the Interface Requirements Document for the GeoXO System Space Segment to Ground-Located Command, Control, and Communications Segment (SS to GL C3S IRD) (418-XO-IRD-0043) [Applicable Document 11].

3.4.5.1 Mission Space to Ground Communications

The GeoXO System shall maintain any radio communication links between the Space and Ground Segments as defined in the SS to GL C3S IRD (418-XO-IRD-0043).

3.4.5.2 Auxiliary Communications Services

3.4.5.2.1 Data Collection System (DCS)

The Data Collection System (DCS) data is provided through the satellite bent pipe transponder and consists of both the Data Collection Platform Report (DCPR) and Data Collection Platform Command (DCPC) links. DCS supports links from a large number of Data Collection Platforms (DCPs), typically small remote monitoring stations used for the collection and reporting of near real-time environmental data, to NOAA Command and Data Acquisition Stations (CDAS) and other Direct Readout Ground Stations

(DRGS).

The DCPR communication link is the link from the DCPs to the satellite bent pipe transponder to the CDAS and DRGS. The DCPC communication link is the forward link from the CDAS to the satellite bent pipe transponder to the DCPs. Details of the DCPR and DCPC interfaces can be found in SS to DCS IRD (418-XO- IRD-0044).

(CCR-X00238)

The GeoXO System shall receive DCS data from Data Collections Platforms as defined in the interface document, “Space Segment to DCS IRD”, 418-XO-IRD-0044 [Applicable Document 10].

The GeoXO System shall send DCS commands from CDAS to the Data Collections Platforms as defined in the interface document, “Space Segment to DCS IRD”, 418- XO-IRD-0044 [Applicable Document 10].

(CCR-X00238)

3.4.6 Software

The GeoXO System shall utilize open hardware and software standards.

3.4.7 Reserved

3.4.8 Observational Payloads

3.4.8.1 GeoXO Imager (GXI)

3.4.8.1.1 GXI Imager Requirements

Reserved

The GeoXO System shall observe Full Disk, Super-Regional and Mesoscale coverage areas to meet each update concurrently.

Page 20 of 46 Printed Tuesday, November 5, 2024

ID

MRD176

MRD177

MRD178

MRD179

MRD180

MRD181

MRD182

MRD183

MRD184

MRD185

MRD186

MRD187

MRD188

Object Number

3.4.8.1.1.0-3

3.4.8.1.1.0-4

3.4.8.1.1.0-5

3.4.8.1.1.0-6

3.4.8.1.1.0-7

3.4.8.1.1.0-8

3.4.8.1.1.0-9

3.4.8.1.2

3.4.8.1.2.0-1

3.4.8.1.3

3.4.8.1.3.0-1

3.4.8.1.4

3.4.8.1.4.0-1

410-XO-MRD-0008, RM Version, Geostationary eXtended Observations (GeoXO) Mission Requirements Document (MRD)

The GeoXO System shall observe Radiances for the Full Disk coverage area.

The GeoXO System shall observe Radiances for the Super-Regional coverage area.

The GeoXO System shall observe Radiances for the Mesoscale coverage area.

The GeoXO System shall observe Radiances for the Full Disk in 10 minutes, in a cadence including all observations needed for calibration and navigation.

The GeoXO System shall observe Radiances for the Super-Regional region to update in 5 minutes, including all observations needed for calibration and navigation.

The GeoXO System shall observe Imaging Radiances for at least two commandable Mesoscale regions, where a mesoscale updates in 30 seconds including all observations needed for calibration and navigation.

The GeoXO System shall observe earth Imaging Radiances with a minimum nadir spatial resolution of 2 km, except for 1 km for each of the 0.91, 1.61, 2.25, 3.9, 5.15, 6.95, and 10.35 um bands, 0.5 km for the 0.47 and 0.86 um band, and 0.25 km for the 0.64…