Attachment F-6-418-XO-PTRUIID-0141_V_1_0.pdf

Effective Date: September 01, 2023 418-XO-PTRUIID-00141 Responsible Organization: GeoXO Flight Project/Code 418 Baseline Version 1.0

To verify the correct version of this document, please contact the GeoXO Series Configuration Management Office.

Geostationary Extended Observations (GeoXO) Partner Payload (PTR)

Unique Instrument Interface Document (UIID) Signature page

Prepared by:

Electronically approved by: 08/09/2023

Erin M. Farrell Date GeoXO Flight Project, Instrument Systems Engineer NASA GSFC, Code 418

Reviewed by:

Electronically approved by: 08/18/2023

Steven W. Bidwell Date GeoXO Flight Project, Mission Systems Engineer NASA GSFC, Code 599

Electronically approved by: 08/21/2023

Sergey Krimchansky Date GeoXO Flight Project, Instrument Systems Manager NASA GSFC, Code 590

Approved by:

Electronically approved by: 09/01/2023

Monica Todirita Date GeoXO Flight Project, Deputy Project Manager NOAA GSFC, Code 418

/GeoXO Flight Project PTR

PTRUIID

418-XO-PTRUIID-0141, RM Version, Geostationary eXtended Observations (GeoXO) Partner Payload (PTR) Unique Instrument Interface Document (UIID)

Version: 1.0 Printed by: rkhoover Printed on: Friday, September 8, 2023

No filter applied.

No sort applied.

Generated from DOORS 9.7.2.4

Contents

1 1Scope

1.1 1Document Overview

1.2 1Requirements Terminology

1.3 2Order of Precedence

2 3Documents

2.1 3Applicable Documents

2.2 3Reference Documents

3 4Allocations

3.1 4Command and Data Handling

3.1.1 4Instrument-to-Spacecraft Science Rate

3.1.2 4Telemetry Data Rate

3.1.3 4Application Process Identifiers

3.1.4 4GeoXO Reliable Data Delivery Protocol Packet Rate

3.2 4Power

3.2.1 4Average Operational Power

3.2.2 4Maximum Operational Power

3.2.3 4Average Survival Power

3.2.4 5Maximum Survival Power

3.3 5Mechanical

3.3.1 5Mass Properties

3.3.2 5Cabling Between Units

3.3.3 5Volume

3.3.4 5Optical Port Field-of-View (FOV)

3.3.5 6Radiator Field of View

3.3.6 6Mounting

3.4 6Mechanical Disturbances

3.4.1 6Integrated Angular Momentum

3.4.2 7Angular Momentum Limits

3.4.3 7Instrument Translation Acceleration Limits

3.4.4 9Predicted Interface Force and Torque (PIFT) Responses

3.4.5 9Spacecraft Mounting Stiffness

3.4.6 9External Sourced Translation Acceleration Limits

3.4.7 11Instrument Torque Limit

Project: GeoXO Flight Project PTR Module: PTRUIID Baseline Version: 1.0

Contents ii

3.5 11Thermal

4 12Constraints

5 13GIRD Deviations

6 14Acronyms

Contents iii

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ID

PTRUIID1

PTRUIID2

PTRUIID3

PTRUIID4

PTRUIID5

PTRUIID6

PTRUIID7

PTRUIID8

PTRUIID9

PTRUIID10

PTRUIID11

PTRUIID12

PTRUIID13

PTRUIID14

PTRUIID15

Object Number

1.0-1

1.0-2

1.0-3

1.0-4

1.0-5

1.0-6

1.1

1.1.0-1

1.2

1.2.0-1

1.2.0-2

1.2.0-3

1.2.0-4

1.2.0-5

418-XO-PTRUIID-0141, RM Version, Geostationary eXtended Observations (GeoXO) Partner Payload (PTR) Unique Instrument

Interface Document (UIID)

1 Scope The purpose of this Unique Instrument Interface Document (UIID) is two-fold. The first is to allocate GeoXO series spacecraft resources to the Partner Payload Instrument (PTR), hereinafter also referred to as the Instrument. The second is to serve as a core building block on which the PTR-spacecraft interface can be designed. This document levies requirements on both the spacecraft and instrument.

This UIID will govern the development of an Interface Control Document (ICD), which will be a joint activity of the PTR and spacecraft contractors.

The PTR ICD establishes the details of the electrical, communications, mechanical, thermal, integration and test, and command and data handling (C&DH) interfaces between the PTR instrument and the GeoXO spacecraft.

The PTR is supplied by an external partner. This section of the UIID will describe the data collected by the instrument. The instrument collects data on a three-axis body-stabilized satellite in geostationary orbit.

The Instrument requires primary power, and command input data from the spacecraft.

PTR output data to the spacecraft contains PTR information, telemetry, and ancillary data.

The sensor unit contains the sensing subsystems necessary for the PTR objectives.

Depending on the objectives these could include an optical subsystem, scanner, detectors and their cooling/heating systems and directly related electronics. The (optional) electronics unit contains the power supply module, command, control, and data processing circuitry.

1.1 Document Overview

Together, the General Interface Requirements Document (GIRD) and the PTR UIID establish the PTR-spacecraft interface requirements. The GIRD applies to all GeoXO instruments while the PTR UIID is specific to the PTR. Section 1 explains the use of this document. Section 2 lists reference documents. Section 3 allocates spacecraft resources, such as mass, power, and data rate, to the PTR instrument. Section 4 contains Government-accepted operation constraints. Section 5 contains Government-accepted deviations from the GIRD. Section 6 contain a list of acronyms used within this document.

1.2 Requirements Terminology

The following requirements terminology is used throughout this document:

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

The term “should” designates a desired level of performance the Government would like the contractor to strive towards achieving and is synonymous with the term “goal.”

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.

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ID

PTRUIID16

PTRUIID17

PTRUIID19

PTRUIID20

PTRUIID22

PTRUIID23

PTRUIID24

PTRUIID25

Object Number

1.2.0-6

1.2.0-7

1.2.0-8

1.2.0-9

1.2.0-10

1.2.0-11

1.3

1.3.0-1

418-XO-PTRUIID-0141, RM Version, Geostationary eXtended Observations (GeoXO) Partner Payload (PTR) Unique Instrument

Interface Document (UIID)

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

TBD requirement proposals are to be made in coordination with the Government and may involve other contractors.

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

TBR requirement proposals will be made in coordination with the Government and may involve other contractors.

The term “TBS” means, “to be supplied.” The Government will supply TBS requirements. The Government will provide a date or milestone at which each TBS requirement will be supplied.

The orbit reference frame (ORF) is defined in the GIRD.

1.3 Order of Precedence

The order of precedence of interface requirements documents is the UIID at the highest level, followed in order by the GIRD, ICD, and Instrument Description Document (IDD).

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ID

PTRUIID26

PTRUIID27

PTRUIID28

PTRUIID29

PTRUIID30

Object Number

2.1

2.1.0-1

2.2

2.2.0-1

418-XO-PTRUIID-0141, RM Version, Geostationary eXtended Observations (GeoXO) Partner Payload (PTR) Unique Instrument

Interface Document (UIID)

2 Documents

2.1 Applicable Documents

The following documents of the exact issue shown form a part of this UIID to the extent specified herein. In the event of conflict between the documents referenced and the contents of this UIID the latter shall be the superseding requirement.

1. 418-XO-GIRD-0041- General Interface Requirements Document (GIRD)

2.2 Reference Documents

The following documents provide reference material for part of this document.

1. CCSDS 133.0-B-2 - Space Packet Protocol, Blue Book, Issue 2, June 2020

2. CCSDS 301.0-B-4 - Time Code Formats. Blue Book. Issue 4, November 2010

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ID

PTRUIID31

PTRUIID32

PTRUIID33

PTRUIID34

PTRUIID35

PTRUIID36

PTRUIID37

PTRUIID112

PTRUIID113

PTRUIID38

PTRUIID39

PTRUIID40

PTRUIID41

PTRUIID42

PTRUIID43

PTRUIID44

PTRUIID45

PTRUIID46

PTRUIID47

Object Number

3.0-1

3.1

3.1.1

3.1.1.0-1

3.1.2

3.1.2.0-1

3.1.2.0-2

3.1.2.0-3

3.1.3

3.1.3.0-1

3.1.4

3.1.4.0-1

3.2

3.2.1

3.2.1.0-1

3.2.2

3.2.2.0-1

3.2.3

418-XO-PTRUIID-0141, RM Version, Geostationary eXtended Observations (GeoXO) Partner Payload (PTR) Unique Instrument

Interface Document (UIID)

3 Allocations The GeoXO spacecraft provides communications, power, and a platform for the PTR instrument. The following paragraphs allocate these resources to PTR.

3.1 Command and Data Handling

3.1.1 Instrument-to-Spacecraft Science Rate

The PTR science and engineering data rate, including all overhead associated with Consultative Committee for Space Data Systems (CCSDS) packetization by the instrument, at the spacecraft interface shall not exceed 75 million bits per second when averaged over any 5 second period.

3.1.2 Telemetry Data Rate

Housekeeping telemetry data rate, including all overhead associated with CCSDS packetization by the Instrument, at the spacecraft interface shall not exceed 1024 bits per second when averaged over any 5 second period.

The Instrument shall generate Instrument Low-Rate Health &Safety (LRHS) packets containing Non-critical Telemetry

The data rate for the Instrument LRHS packets shall be less than or equal to 100 bits per second when averaged over 16 seconds.

3.1.3 Application Process Identifiers

The PTR shall use no more than 255 consecutive Application Process Identifiers (APIDs) for science, telemetry, and command packets.

3.1.4 GeoXO Reliable Data Delivery Protocol Packet Rate

The PTR shall transmit to the spacecraft no more than 400 GOES Reliable Data Delivery Protocol (GRDDP) Packets per second.

3.2 Power

3.2.1 Average Operational Power

The PTR shall draw operational average power, inclusive of heaters, of no more than 170 Watts from up to four total feeds including primary and redundant. Operational average power is the total power into an instrument averaged over any 5 minute period.

3.2.2 Maximum Operational Power

The PTR shall draw operational maximum power of no more than 275 Watts from up to four total feeds. Operational maximum power is the total power into an instrument averaged over any 20ms period.

3.2.3 Average Survival Power

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ID

PTRUIID48

PTRUIID49

PTRUIID50

PTRUIID51

PTRUIID52

PTRUIID53

PTRUIID54

PTRUIID55

PTRUIID56

PTRUIID57

PTRUIID58

PTRUIID59

PTRUIID60

PTRUIID61

PTRUIID62

Object Number

3.2.3.0-1

3.2.4

3.2.4.0-1

3.3

3.3.0-1

3.3.1

3.3.1.0-1

3.3.2

3.3.2.0-1

3.3.2.0-2

3.3.3

3.3.3.0-1

3.3.3.0-2

3.3.4

3.3.4.0-1

418-XO-PTRUIID-0141, RM Version, Geostationary eXtended Observations (GeoXO) Partner Payload (PTR) Unique Instrument

Interface Document (UIID)

The PTR shall draw average survival power of no more than 110 Watts. Average survival power is the total power into an instrument averaged over any 72 minute period.

3.2.4 Maximum Survival Power

The PTR shall draw maximum survival power of no more than 165 Watts. Survival maximum power is the total power into an instrument averaged over any 20ms period.

3.3 Mechanical

The requirements in this section apply to the structural and mechanical components of the instrument flight units (sensor unit, electronics unit and, if applicable, auxiliary electronics unit).

3.3.1 Mass Properties

The PTR, including all units and cabling between units, shall have mass less than 150 kilograms.

3.3.2 Cabling Between Units

If there are external units mounted directly to the spacecraft, the PTR shall accommodate any cable length between the units up to but not exceeding the lengths of 4 meters.

Cables between PTR units shall be the responsibility of the PTR provider.

3.3.3 Volume

The PTR sensor shall be mounted on the Earth Pointing Platform (EPP) or Nadir Deck of the spacecraft.

The PTR Sensor Unit stowed and operational (deployed) configurations, including mounts, thermal blankets and connectors, shall have dimensions that do not exceed the limits provided below.

Depth (Z direction, Nadir or interface plane): 1500 millimeters Width (X direction, parallel to orbit): 1290 millimeters Height (Y direction, normal to orbit): 1230 millimeters

Rationale: The narrow dimension allows for other instruments to share the EPP with the

PTR

3.3.4 Optical Port Field-of-View (FOV)

The spacecraft shall provide the sensor unit’s optical port a clear field-of-view within 65 degrees of nadir as shown in the following figure. A clear FOV is an instrument FOV free of any obstructions.

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ID

PTRUIID62

PTRUIID63

PTRUIID64

PTRUIID65

PTRUIID66

PTRUIID67

PTRUIID68

PTRUIID69

PTRUIID70

PTRUIID71

PTRUIID72

PTRUIID73

PTRUIID74

Object Number

3.3.4.0-1

3.3.5

3.3.5.0-1

3.3.5.0-2

3.3.5.0-3

3.3.6

3.3.6.0-1

3.3.6.0-2

3.3.6.0-3

3.4

3.4.0-1

3.4.1

3.4.1.0-1

418-XO-PTRUIID-0141, RM Version, Geostationary eXtended Observations (GeoXO) Partner Payload (PTR) Unique Instrument

Interface Document (UIID)

Optical Port Field-of-View

3.3.5 Radiator Field of View

The Instrument shall dedicate the +Y face of the instrument for a radiator surface with the axis in the Body Reference Frame (BRF) as defined in the GIRD.

The spacecraft shall provide the sensor unit’s radiator face a 2π steradian field-of view to space excepting a field-of-view blockage with less than 40 W/m^2 infrared back loading.

The Instrument shall meet performance requirements with an incident 40 W/m^2 infrared back loading on the radiator surface.

3.3.6 Mounting

The spacecraft shall provide the instrument sensor unit a nadir-facing mounting surface.

The sensor unit mechanical interface shall lie within the anti-nadir plane of the sensor unit envelope.

The Instrument sensor unit shall use kinematic mounts for its mechanical interface to the spacecraft.

3.4 Mechanical Disturbances

These requirements below apply while the Instrument is in orbit and operating.

3.4.1 Integrated Angular Momentum

The absolute value of the high-pass-filtered angular momentum integrated with respect to time shall not exceed the values listed in Filtered Integrated Angular Momentum Limits Table. The filter is a second order Butterworth filter with a -3 dB cutoff frequency at 0.01 Hz.

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ID

PTRUIID74

PTRUIID75

PTRUIID76

PTRUIID77

PTRUIID78

PTRUIID79

PTRUIID80

Object Number

3.4.1.0-1

3.4.1.0-2

3.4.2

3.4.2.0-1

3.4.2.0-2

3.4.3

3.4.3.0-1

418-XO-PTRUIID-0141, RM Version, Geostationary eXtended Observations (GeoXO) Partner Payload (PTR) Unique Instrument

Interface Document (UIID)

Filtered Integrated Angular Momentum Limits Table

Axis Limit

(N-m-s2) roll 0.5 pitch 0.3 yaw 0.5

The satellite center of mass will be within 2 meters of the centroid of the sensor unit mounts.

3.4.2 Angular Momentum Limits

The absolute value of the high-pass-filtered angular momentum produced by the sensor unit referenced at the satellite center of mass shall not exceed the values listed in the Angular Momentum Limits Table. The high-pass-filter is a second order Butterworth filter with a -3 dB cutoff frequency at 0.01 Hz.

Angular Momentum Limits Table

Axis Limit

(N-m-s) roll 0.1 pitch 0.05 yaw 0.1

The absolute value of the bandpass-filtered instrument angular momentum in each orthogonal axis shall not exceed the values listed in the Bandpass-Filtered Angular Momentum Limits Table. The bandpass filters for this requirement are defined as a series of eighth-order Butterworth bandpass filters with -3 dB bandwidth of one sixth of an octave. The first filter in the series has its center frequency at 0.015625 Hz, and the center frequencies for the series are spaced at one-twelfth octave up to 10 Hz. The BandpassFiltered Angular Momentum Limits apply to filters with center frequency greater than f1 and less than or equal to f2.

Bandpass-Filtered Angular Momentum Limits Table f1 f2 Limit

(N-m-s)

0.01 0.25 0.05

0.25 1 0.02

1 10 0.015

3.4.3 Instrument Translation Acceleration Limits

The translational accelerations induced by the Instrument sensor unit at each mount shall not exceed the limits specified in the Instrument-to-Spacecraft Linear Acceleration Limits table below. The accelerations are those induced by operation of the sensor unit while mounted to a flexible interface. The limits apply to each orthogonal

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ID

PTRUIID104

PTRUIID105

Object Number

4.0-1

418-XO-PTRUIID-0141, RM Version, Geostationary eXtended Observations (GeoXO) Partner Payload (PTR) Unique Instrument

Interface Document (UIID)

4 Constraints In order to ensure proper Instrument performance or to prevent possible instrument damage, the following Government-approved constraints are imposed by the instrument developer on spacecraft integration and test activities, including launch, activation and operations.

No constraints have been identified at this time.

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ID

PTRUIID106

PTRUIID107

PTRUIID109

Object Number

5.0-1

5.0-2

418-XO-PTRUIID-0141, RM Version, Geostationary eXtended Observations (GeoXO) Partner Payload (PTR) Unique Instrument

Interface Document (UIID)

5 GIRD Deviations This section identifies GIRD requirements that the Government has deviated from for this Instrument. Where appropriate, corresponding GIRD paragraph titles and numbers are identified in parentheses.

No deviations have been identified at this time.

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ID

PTRUIID110

PTRUIID111

Object Number

6.0-1

418-XO-PTRUIID-0141, RM Version, Geostationary eXtended Observations (GeoXO) Partner Payload (PTR) Unique Instrument

Interface Document (UIID)

6 Acronyms APID Application Process Identifier BRF Body Reference Frame C&DH Command and Data Handling CCSDS Consultative Committee for Space Data Systems EPP Earth Pointing Platform FOV Field of View GeoXO Geostationary eXtended Observations GIRD General Interface Requirements Document GOES Geostationary Operational Environmental Satellite GRDDP GOES Reliable Data Delivery Protocol Hz Hertz ICD Interface Control Document IDD Instrument Description Document NASA National Aeronautics and Space Administration ORF Orbit Reference Frame PIFT Predicted Interface Force and Torque PTR Partner Payload Instrument for GeoXO SRS Shock Response Spectra TBD to be determined TBR to be resolved TBS to be specified UIID Unique Instrument Interface Document

Effective Date: September 01, 2023 418-XO-PTRUIID-00141 Responsible Organization: GeoXO Flight Project/Code 418 Baseline Version 1.0

To verify the correct version of this document, please contact the GeoXO Series Configuration Management Office.

Document Change Record (DCR)

CCR GeoXO#: 00237 Rev: Title: 418-XO-PTRUIID-0141 Baselining PTRUIID Contract # N/A GeoXO S/C: GeoXO Effectivity: Instruments CCB Status: Approved Approved Doc #: 418-XO-PTRUIID-0141 CCB Date: 09/01/2023 Doc Version: 1.0 Contract Mod#: N/A DOORs Version: 1.0 Doc Change Date: Sept. 01, 2023 DOORs ID #: All