Attachment D GXSUIID.pdf

Effective Date: August 13, 2021 418-XO-GXSUIID-0030 Responsible Organization: GeoXO Flight Project/Code 418 Baseline Version 1.5

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

Geostationary Extended Observations (GeoXO) Sounder (GXS)

Unique Instrument Interface Document (UIID) Signature page

Prepared by:

Electronically approved by: 04/23/2021

Nicolaas du Toit Date GeoXO Flight Project, Instrument Systems Engineer NASA GSFC, Code 418

Reviewed by:

Electronically approved by: 04/12/2021

Alexander Krimchansky Date GeoXO Flight Project, Mission Systems Engineer NASA GSFC, Code 599

Approved by:

Electronically approved by: 04/20/2021

Jason H. Hair Date GeoXO Flight Project, Project Manager NASA GSFC, Code 418

/GeoXO Flight Project GXS Sounder

GXSUIID

418-XO-GXSUIID-0030, RM Version, GeoXO Sounder (GXS) Unique Instrument Interface Document (UIID)

Version: 1.5 Printed by: hlhedger Printed on: Wednesday, December 7, 2022

No filter applied.

No sort applied.

Generated from DOORS 9.7.2.4

Contents

1 1Scope (CCR-X00044A)

1.1 1Document Overview (CCR-X00044A)

1.2 2Requirements Terminology (CCR-X00044A)

1.3 2Order of Precedence (CCR-X00044A)

2 3Documents (CCR-X00044A)

2.1 3Applicable Documents (CCR-X00044A)

2.2 3Reference Documents (CCR-X00044A)

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 (CCR-X00044A)

3.2 4Power

3.2.1 4Average Operational Power

3.2.2 4Maximum Operational Power

3.2.3 4Average Survival Power

3.2.4 4Maximum 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

3.3.5 6Radiator Field-of-View

3.3.6 6Field-of-View in the +X direction (CCR-X00044A)

3.3.7 6Mounting

3.4 7Mechanical Disturbances (CCR-X00044A)

3.4.1 7Integrated Angular Momentum

3.4.2 7Angular Momentum Limits

3.4.3 8Instrument Translation Acceleration Limits

3.4.4 10Predicted Interface Force and Torque (PIFT) Responses

3.4.5 11Spacecraft Mounting Stiffness

3.4.6 11External Sourced Translation Acceleration Limits

Project: GeoXO Flight Project GXS Sounder Module: GXSUIID Baseline Version: 1.5

Contents ii

3.4.7 13Instrument Torque Limit (CCR-X00044A)

3.5 13Thermal

3.6 13Reserved (CCR-X00144)

4 14Constraints

5 15GIRD Deviations

6 16Design Verification Requirements

6.1 16Radiated Emissions, Electric Field (RE 102)

6.2 16Reserved (CCR-X00044A)

7 17Acronyms

Contents iii

Page 1 of 17 Printed Wednesday, December 7, 2022

ID

GXSUIID118

GXSUIID119

GXSUIID151

GXSUIID120

GXSUIID121

GXSUIID122

GXSUIID123

GXSUIID124

GXSUIID125

GXSUIID126

Object Number

1.0-1

1.0-2

1.0-3

1.0-4

1.0-5

1.0-6

1.0-7

1.1

1.1.0-1

418-XO-GXSUIID-0030, RM Version, GeoXO Sounder (GXS) Unique Instrument Interface Document (UIID)

1 Scope (CCR-X00044A)

The purpose of this Unique Instrument Interface Document (UIID) is two-fold. The first is to allocate GeoXO series spacecraft resources to the Hyperspectral Sounder Instrument (GXS). The second is to serve as a core building block on which the GXS-spacecraft interface can be designed. The spacecraft integrating contractor and the GXS contractor will meet each of their respective interface requirements as defined in this document. (CCR-X00044A)

Throughout this document the Hyperspectral Sounder Instrument is alternatively referred to as Sounder, sounder, Sounder instrument, GXS instrument, Instrument, instrument, and GXS. No distinction is made between these terms and all are synonymous. (CCR-X00083)

This UIID will govern the development of an Interface Control Document (ICD) which will be a joint activity of the GXS and spacecraft contractors. (CCR-X00044A)

The GXS ICD establishes the details of the electrical, communications, mechanical, thermal, integration and test, and command and data handling (C&DH) interfaces between the GXS instrument and the GeoXO spacecraft. After the ICD is signed and approved by all parties, the spacecraft contractor will maintain the ICD. (CCR-X00044A)

The GXS is a hyperspectral infrared passive radiometric sounder used to collect environmental data as part of a 3-axis stabilized geostationary (GEO) weather satellite system of the GEO-eXtended Observations (GeoXO) program. The GXS will collect radiance observations of the earth’s atmosphere with both spectral and horizontal resolution that will yield vertical temperature and moisture information. Winds can also be derived from rapid mesoscale observations. GXS will provide hyperspectral geostationary operational observations for soundings of the western hemisphere for the first time. GXS data will enhance convective storm nowcasting as well as improve numerical weather production (NWP) in short range weather forecasting and longer range weather prediction. (CCR-X00044A)

Data availability, radiometric quality, simultaneous data collection, coverage rates, scan flexibility, and minimizing data loss due to the sun are prime requirements of the system. The instrument requires primary power, and command input data from the spacecraft. Instrument output data to the spacecraft contains instrument information, instrument telemetry and ancillary data. (CCR-X00044A)

The sensor units contain the optical system, scanner, detectors and their cooling/heating systems and directly related electronics. The electronics unit contains the power supply module, command, control, and data processing circuitry. If required, an auxiliary electronics unit may be used for active detector temperature regulation.

(CCR-X00044A)

1.1 Document Overview (CCR-X00044A)

Together, the General Interface Requirements Document (GIRD) and the GXS UIID establish the GXS-spacecraft interface requirements. The GIRD applies to all GeoXO instruments while the GXS UIID is specific to the GXS. 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 GXS instrument. Section 4 contains government-accepted operation constraints. Section 5 contains government-accepted deviations from the GIRD. Section 6 contains Design Verification Requirements. Section 7 contains a list of acronyms used within this document. (CCR-X00044A)

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ID

GXSUIID127

GXSUIID128

GXSUIID129

GXSUIID130

GXSUIID131

GXSUIID152

GXSUIID132

GXSUIID133

GXSUIID134

GXSUIID135

GXSUIID136

GXSUIID137

GXSUIID138

GXSUIID139

GXSUIID140

GXSUIID141

Object Number

1.2

1.2.0-1

1.2.0-2

1.2.0-3

1.2.0-4

1.2.0-5

1.2.0-6

1.2.0-7

1.2.0-8

1.2.0-9

1.2.0-10

1.2.0-11

1.2.0-12

1.2.0-13

1.3

1.3.0-1

418-XO-GXSUIID-0030, RM Version, GeoXO Sounder (GXS) Unique Instrument Interface Document (UIID)

1.2 Requirements Terminology (CCR-X00044A)

The following requirements terminology is used throughout this document: (CCR- X00044A)

The use of “shall” designates a requirement that must be met. (CCR-X00044A) (CCR- X00083)

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.”

(CCR-X00044A)

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

X00044A) (CCR-X00083)

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

(CCR-X00083)

The term “(TBD)” means, “to be determined” and is used when no value is available with subsequent study needed to obtain it. (CCR-X00044A) (CCR-X00083)

Reserved (CCR-X00044A) (CCR-X00083)

Reserved (CCR-X00044A) (CCR-X00083)

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. (CCR-X00044A)

(CCR-X00083)

Reserved (CCR-X00044A) (CCR-X00083)

Reserved (CCR-X00044A) (CCR-X00083)

Reserved (CCR-X00044A) (CCR-X00083)

The orbit reference frame (ORF), and the body reference frame (BRF), and defined in the GIRD. (CCR-X00044A)

1.3 Order of Precedence (CCR-X00044A)

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).

(CCR-X00044A)

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ID

GXSUIID142

GXSUIID143

GXSUIID145

GXSUIID144

GXSUIID146

Object Number

2.1

2.1.0-1

2.2

2.2.0-1

418-XO-GXSUIID-0030, RM Version, GeoXO Sounder (GXS) Unique Instrument Interface Document (UIID)

2 Documents (CCR-X00044A)

2.1 Applicable Documents (CCR-X00044A)

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 will be the superseding requirement.

1. MIL-STD-461G – Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment, 11 December 2015

2. 418-XO-GXIGIRD-0025 - General Interface Requirements Document (GIRD)

(CCR-X00044A)

2.2 Reference Documents (CCR-X00044A)

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

3. 418-XO-RPT-0039 GOES Reliable Data Delivery Protocol (GRDDP)

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ID

GXSUIID26

GXSUIID27

GXSUIID28

GXSUIID29

GXSUIID30

GXSUIID31

GXSUIID32

GXSUIID33

GXSUIID34

GXSUIID35

GXSUIID36

GXSUIID37

GXSUIID38

GXSUIID39

GXSUIID40

GXSUIID41

GXSUIID42

GXSUIID43

GXSUIID44

Object Number

3.0-1

3.1

3.1.1

3.1.1.0-1

3.1.2

3.1.2.0-1

3.1.3

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

3.2.3.0-1

3.2.4

418-XO-GXSUIID-0030, RM Version, GeoXO Sounder (GXS) Unique Instrument Interface Document (UIID)

3 Allocations

The GeoXO spacecraft provides communications, power and a platform for the Sounder instrument. The following paragraphs allocate these resources to Sounder. (CCR- X00044A)

3.1 Command and Data Handling

3.1.1 Instrument-to-Spacecraft Science Rate

The instrument 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 150 million bits per second when averaged over any 5 second period. (CCR-X00044A)

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.

3.1.3 Application Process Identifiers

The Sounder 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 (CCR- X00044A)

The Sounder shall transmit to the spacecraft no more than 400 GOES Reliable Data Delivery Protocol (GRDDP) Packets per second. (CCR-X00044A)

3.2 Power

3.2.1 Average Operational Power

The Sounder shall draw operational average power, inclusive of heaters, of no more than 615 Watts from up to six total feeds including primary and redundant feeds.

Operational average power is the total power into an instrument averaged over any 5 minute period. (CCR-X00044A)

3.2.2 Maximum Operational Power

The Sounder shall draw operational maximum power of no more than 984 Watts.

Operational maximum power is the total power into an instrument averaged over any 20ms period. (CCR-X00018)

3.2.3 Average Survival Power

The Sounder shall draw average survival power of no more than 400 Watts. Average survival power is the total power into an instrument averaged over any 72 minute period. (CCR-X00018)

3.2.4 Maximum Survival Power

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ID

GXSUIID45

GXSUIID46

GXSUIID47

GXSUIID48

GXSUIID49

GXSUIID50

GXSUIID51

GXSUIID52

GXSUIID53

GXSUIID54

GXSUIID150

GXSUIID55

Object Number

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

418-XO-GXSUIID-0030, RM Version, GeoXO Sounder (GXS) Unique Instrument Interface Document (UIID)

The Sounder shall draw maximum survival power of no more than 600 Watts. Survival maximum power is the total power into an instrument averaged over any 20ms period.

(CCR-X00018)

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 Sounder, including all units and cabling between units, shall have mass less than 375 kilograms. (CCR-X00083) (CCR-X00144)

3.3.2 Cabling Between Units

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

Cables between Sounder units will be the responsibility of the Sounder contractor.

3.3.3 Volume

The Sounder Sensor Unit stowed configuration, including mounts, thermal blankets and connectors, shall have dimensions that do not exceed the limits provided below.

Height: 1500 millimeters

Length: 1200 millimeters

Width: 1750 millimeters

Height is along the instrument frame Z axis. Length is along the instrument frame Y axis. Width is along the instrument frame X axis. The instrument frame is defined in

GIRD64. (CCR-X00083) (CCR-X00130) (CCR-X00144)

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

Height: 1640 millimeters

Length: 1460 millimeters

Width: 1750 millimeters

Height is along the instrument frame Z axis. Length is along the instrument frame Y axis. Width is along the instrument frame X axis. The instrument frame is defined in

GIRD64.

The deployed envelope extends in the -Y direction beyond the stowed envelope. (CCR-

X00083) (CCR-X00130) (CCR-X00144)

3.3.4 Optical Port Field-of-View

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ID

GXSUIID56

GXSUIID57

GXSUIID58

GXSUIID114

GXSUIID117

GXSUIID147

GXSUIID148

GXSUIID59

GXSUIID60

GXSUIID61

Object Number

3.3.4.0-1

3.3.5

3.3.5.0-1

3.3.5.0-2

3.3.6

3.3.6.0-1

3.3.6.0-2

3.3.7

3.3.7.0-1

3.3.7.0-2

418-XO-GXSUIID-0030, RM Version, GeoXO Sounder (GXS) Unique Instrument Interface Document (UIID)

The spacecraft shall provide the sensor unit’s optical port a clear field-of-view within 65o of nadir as shown in the following figure. A clear FOV is an instrument FOV free of any obstructions. (CCR-X00083)

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 General Interface Requirements Document. (CCR-X00018) (CCR-X00044A)

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 3 W back loading. (CCR-

X00018) (CCR-X00044A)

3.3.6 Field-of-View in the +X direction (CCR-X00044A)

The spacecraft shall provide on the sensor unit's +X face a clear calibration FOV of 7.5 degrees centered on the X-axis, in the X-Z plane, and 52.0 degrees centered on the X-axis, in the X-Y plane. A clear FOV is an instrument FOV free of any obstructions. (CCR-

X00044A) (CCR-X00083)

The spacecraft shall provide on the sensor unit's +X face a calibration glint free FOV of 66 degrees centered on the X-axis, in the X-Z plane, and 80 degrees centered on the X-axis, in the X-Y planes. Glint is defined as stray light from structures such as solar panels, antennas, or other sensors. A glint-free FOV is an instrument FOV free of objects reflecting stray light into an instrument aperture. (CCR-X00044A) (CCR-X00083)

3.3.7 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.

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ID

GXSUIID62

GXSUIID63

GXSUIID64

GXSUIID65

GXSUIID66

GXSUIID67

GXSUIID68

GXSUIID69

Object Number

3.3.7.0-3

3.4

3.4.0-1

3.4.1

3.4.1.0-1

3.4.2

3.4.2.0-1

3.4.2.0-2

418-XO-GXSUIID-0030, RM Version, GeoXO Sounder (GXS) Unique Instrument Interface Document (UIID)

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

3.4 Mechanical Disturbances (CCR-X00044A)

These requirements 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.

Filtered Integrated Angular Momentum Limits

Limit Axis (N-m-s2) Roll 0.50

Pitch 0.30 Yaw 0.50

(CCR-X00018) (CCR-X00044A)

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

Angular Momentum Limits

Limit Axis (N-m-s) Roll 0.10

Pitch 0.05 Yaw 0.10

(CCR-X00018)

The absolute value of the band pass filtered instrument angular momentum in each orthogonal axis shall not exceed the values listed in the One-Sixth Octave Band 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 Bandpass-Filtered Angular Momentum Limits apply to filters with center frequency greater than f1 and less than or equal to f2.

Page 8 of 17 Printed Wednesday, December 7, 2022

ID

GXSUIID69

GXSUIID70

Object Number

3.4.2.0-2

3.4.3

418-XO-GXSUIID-0030, RM Version, GeoXO Sounder (GXS) Unique Instrument Interface Document (UIID)

One-Sixth Octave Band Filtered Instrument Angular Momentum Limits f1 (Hz) f2 (Hz)

Limit (N-m-s)

0.01 0.25 0.050

0.25 1.0 0.020

1.0 10.0 0.015

3.4.3 Instrument Translation Acceleration Limits

Page 13 of 17 Printed Wednesday, December 7, 2022

ID

GXSUIID116

GXSUIID149

GXSUIID90

GXSUIID91

GXSUIID92

GXSUIID94

Object Number

3.4.7

3.4.7.0-1

3.5

3.5.0-1

3.6

3.6.0-1

418-XO-GXSUIID-0030, RM Version, GeoXO Sounder (GXS) Unique Instrument Interface Document (UIID)

3.4.7 Instrument Torque Limit (CCR-X00044A)

At any time during the operational mode of the spacecraft, the sum of the magnitude of the instrument sensor unit’s uncompensated torques and the magnitude of its uncompensated linear forces multiplied by a lever arm of 2 meters shall not exceed 0.15 N-m.

Note: For GXSUIID149, 4th order 25 Hz low pass Butterworth filter may be applied to cryocooler-sourced loads. (CCR-X00044A) (CCR-X00130)

3.5 Thermal

The total heat transfer to the spacecraft of all instrument electronics units shall not exceed 220 Watts.

3.6 Reserved (CCR-X00144)

Reserved (CCR-X00144)

Page 14 of 17 Printed Wednesday, December 7, 2022

ID

GXSUIID95

GXSUIID96

GXSUIID97

Object Number

4.0-1

4.0-2

418-XO-GXSUIID-0030, RM Version, GeoXO Sounder (GXS) 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.

Page 15 of 17 Printed Wednesday, December 7, 2022

ID

GXSUIID98

GXSUIID99

Object Number

5.0-1

418-XO-GXSUIID-0030, RM Version, GeoXO Sounder (GXS) 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.

Page 17 of 17 Printed Wednesday, December 7, 2022

ID

GXSUIID112

GXSUIID113

Object Number

7.0-1

418-XO-GXSUIID-0030, RM Version, GeoXO Sounder (GXS) Unique Instrument Interface Document (UIID)

7 Acronyms

APID Application Process Identifier

BRF Body Reference Frame

C&DH Command and Data Handling

CCSDS Consultative Committee for Space Data Systems

GIRD General Interface Requirements Document

GOES Geostationary Operational Environmental Satellite

GRDDP GOES-R Reliable Data Delivery Protocol

GSFC Goddard Space Flight Center

GXS GeoXO Sounder (CCR-X00044A)

Hz Hertz

ICD Interface Control Document

IDD Instrument Description Document kg kilogram m meter

Mbps million bits per second mg milli-g’s (where g is gravitational acceleration at Earth surface)

NASA National Aeronautics and Space Administration

ORF Orbit Reference Frame

PORD Performance and Operational Requirements Document

SRS Shock Response Spectra

TBD to be determined

TBR to be resolved

UIID Unique Instrument Interface Document

(CCR-X00083)

Effective Date: August 13, 2021 418-XO-GXSUIID-0030

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

Document Change Record (DCR)

CCR GeoXO#:X00012 Rev: Title: 418-XO-GXSUIID-0030: GeoXO Sounder UIID baseline Contract # N/A GeoXO S/C: GeoXO Effectivity: Instruments CCB Status: Approved Doc #: 418-XO-GXSUIID-0030 CCB Date: 04/20/2021 Doc Version: 1.0 Contract Mod#: N/A DOORs Version: 1.0 Doc Change Date: April 20, 2021 DOORs ID #: 1.0

CCR GeoXO#:X00018 Rev: Title: GXSUIID: Updates for phase A Contract # N/A GeoXO S/C: GeoXO Effectivity: Instruments CCB Status: Approved Doc #: 418-XO-GXSUIID-0030 CCB Date: 08/13/2021 Doc Version: 1.1 Contract Mod#: N/A DOORs Version: 1.1 Doc Change Date: Aug. 13, 2021 DOORs ID #: Modify: GXSUIID41 (1.2.2.0-1), 43 (1.2.3.0-1), 45 (1.2.4.0-1), 58 (1.3.5.0-1), 66 (1.4.1.0-1), 68 (1.4.2.0-1), 86 (1.4.5.0-1), 114 (1.3.5.0-2) Add: GXSUIID115 (1.4.5.0-2)

CCR GeoXO#:X00044 Rev: A Title: GXSUIID: Changes for phase A Contract # N/A GeoXO S/C: GeoXO Effectivity: Instruments CCB Status: Approved Doc #: 418-XO-GXSUIID-0030 CCB Date: 11/16/2021 Doc Version: 1.2 Contract Mod#: N/A DOORs Version: 1.2 Doc Change Date: Nov. 16, 2021 DOORs ID #: Modify: GXSUIID27 (3.0-1), 30 (3.1.1.0-1), 35 (3.1.4), 36 (3.1.4.0-1), 39

(3.2.1.0-1), 58 (3.3.5.0-1), 114 (3.3.5.0-2), 63 (3.4), 66 (3.4.1.0-1), 69 (3.4.2.0-2), 71 (3.4.3.0-1), 72 (3.4.3.0-2), 86 (3.4.5.0-1), 88 (3.4.6.0-1), 89 (3.4.6.0-2), 115 (3.4.5.0-2), 103 (6.1.0-1), 104 (6.1.0-2), 105 (6.2), 106 (6.2.0-1), 107 (6.2.0-2), 108 (6.2.0-3), 109 (6.2.0-4), 110 (6.2.0-5), 111 (6.2.0-6), 113 (7.0-1), 115 (3.4.5.0-2), 117 (3.3.6)

Add: GXSUIID118 (1), 119 (1.0-1), 120 (1.0-2), 121 (1.0-3), 122 (1.0-4), 123 (1.0-5), 124 (1.0-6), 125 (1.1), 126 (1.1.0-1), 127 (1.2), 128 (1.2.0-1), 129 (1.2.0-2), 130 (1.2.0-3), 131 (1.2.0-4), 132 (1.2.0-5), 133 (1.2.0-6), 134 (1.2.0-7), 135 (1.2.0-8), 136 (1.2.0-9), 137 (1.2.0-10), 138 (1.2.0-11), 139 (1.2.0-12), 140 (1.3), 141 (1.3.0-1), 142 (2), 143 (2.1), 145 (2.1.0-1), (144 (2.2), 146 (2.2.0-1), 117 (3.3.6), 147 (3.3.6.0-1), 148 (3.3.6.0-2), 116 (3.4.7), 149 (3.4.7.0-1);

Delete: GXSUIID105 (6.2), 106 (6.2.0-1), 107 (6.2.0-2), 108 (6.2.0-3), 109 (6.2.0-4), 110 (5.2.0-5), 111 (6.2.0-6), [replaced original text with “Reserved’; DI retains for potential future use;]

CCR GeoXO#:X00083 Rev: Title: GXSUIID: Instrument Volume and other Contract #: 80GSFC21CA023 80GSFC21CA024 GeoXO S/C: GeoXO Effectivity: None CCB Status: Approved Doc #: 418-XO-GXSUIID-0030 CCB Date: 6/13/2022 Doc Version: 1.3 Contract Mod#: 8 DOORs Version: 1.3 Doc Change Date: June 22, 2022 DOORs ID #: Modify: GXSUIID49 (3.3.1.0-1), 54 (3.3.3.0-1), 56 (3.3.4.0-1), 113 (7.0-1), 129 (1.2.0-2), 131 (1.2.0-4), 132 (1.2.0-6), 133 (1.2.0-7), 134 (1.2.0-8), 135 (1.2.0-9), 136 (1.2.0-10), 137 (1.2.0-11), 138 (1.2.0-12), 147 (3.3.6.0-2), 148 (3.3.6.0-2)

Add: Insertion after GXSUIID150 (3.3.3.0-2), 151 (1.0-2), 152 (1.2.0-5)

CMO note: GXS instrument is awarded, contract numbers and contract mod are added in the Contract # and Contract Mod fields.

CCR GeoXO#:X00130 Rev: Title: GXSUIID: Instrument Volume Update Contract #: 80GSFC21CA023 80GSFC21CA024 GeoXO S/C: GeoXO Effectivity: None CCB Status: Approved Doc #: 418-XO-GXSUIID-0030 CCB Date: 10/17/2022 Doc Version: 1.4

Effective Date: August 13, 2021 418-XO-GXSUIID-0030

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

Contract Mod#: 12, 13 DOORs Version: 1.4 Doc Change Date: Oct. 28, 2022 DOORs ID #: Modify: GXSUIID54 (3.3.3.0-1), 149 (3.4.7.0-1), 150 (3.3.3.0-2)

CCR GeoXO#:X00144 Rev: Title: GXSUIID: TBR deletions Contract #: 80GSFC21CA023 80GSFC21CA024 GeoXO S/C: GeoXO Effectivity: None CCB Status: Approved Doc #: 418-XO-GXSUIID-0030 CCB Date: 12/06/2022 Doc Version: 1.5 Contract Mod#: N/A DOORs Version: 1.5 Doc Change Date: Dec. 06, 2022 DOORs ID #: Modify: GXSUIID49 (3.3.1.0-1), 54 (3.3.3.0-1), 92 (3.6), 94 (3.6.0-1), 150

(3.3.3.0-2)

CM note: bypassed Contract Negotiation due to GXS Implementation Phase B RFP Proposal.