ATTACHMENT D UIID 418-XO-OCXUIID-0062_V_1_0-2.pdf

Effective Date: August 12, 2021 418-XO-OCXUIID-0062 Expiration Date: Five years from date of last signature Baseline Version 1.0 Responsible Organization: GeoXO Flight Project/Code 418

Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX)

Unique Instrument Interface Document (UIID) Signature page

Prepared by:

Electronically approved by: 05/19/2021

Marc D. Rafal Date GeoXO Flight Project, Instrument Systems Engineer NASA GSFC, Code 418

Reviewed by:

Electronically approved by: 08/03/2021

Steven W. Bidwell Date GeoXO Flight Project, Mission Systems Engineer NASA GSFC, Code 418

Approved by:

Electronically approved by: 08/12/2021

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

/GeoXO Flight Project OCX

OCXUIID

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) Unique Instrument Interface Document (UIID)

Version: 1.0 Printed by: rkhoover Printed on: Friday, August 13, 2021

No filter applied.

No sort applied.

Generated from DOORS 9.6.1.11

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 4Maximum Survival Power

3.3 5Mechanical

3.3.1 5Mass Properties

3.3.2 5Cabling Between Units

3.3.3 5Volume

3.3.4 6Optical Port Field-of-View

3.3.5 6Radiator Field-of-View

3.3.6 7Field-of-View in the +X direction

3.3.7 7Mounting

3.4 7Instrument-to-Spacecraft Disturbances

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 OCX Module: OCXUIID Baseline Version: 1.0

Contents ii

3.5 13Thermal

3.6 13Instrument Purge Requirements

4 14Constraints

5 15GIRD Deviations

5.1 15Attitude Rate Error

6 16Design Verification Requirements

6.1 16Radiated Emissions, Electric Field (RE 102)

6.2 16Radiated Emissions in DCS Receiver Bands

7 18Acronyms

Contents iii

Page 1 of 18 Printed Friday, August 13, 2021

ID

OCXUIID1

OCXUIID2

OCXUIID3

OCXUIID4

OCXUIID5

OCXUIID6

OCXUIID7

OCXUIID8

OCXUIID9

OCXUIID10

OCXUIID11

Object Number

1.0-1

1.0-2

1.0-3

1.0-4

1.0-5

1.1

1.1.0-1

1.2

1.2.0-1

1.2.0-2

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) 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 Ocean Color Instrument (OCX). The second is to serve as a core building block on which the OCX-spacecraft interface can be designed. The spacecraft integrating contractor and the OCX contractor will meet each of their respective interface requirements as defined in this document.

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

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

The OCX is a hyperspectral imager in geostationary, or GEO, orbit. Hyperspectral imaging collects and processes information from across the electromagnetic spectrum including visible light, near-infrared and ultraviolet frequencies to create a highly detailed view of physical and biological conditions in coastal waters. The instruments will collect data on a three-axis body-stabilized satellite in geosynchronous orbit.

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.

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.

1.1 Document Overview

Together, the General Interface Requirements Document (GIRD) and the OCX UIID establish the OCX-spacecraft interface requirements. The GIRD applies to all GeoXO instruments while the OCX UIID is specific to the OCX. 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 OCX 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.

1.2 Requirements Terminology

The following requirements terminology is used throughout this document:

The term “shall” designates a requirement that must be achieved and is synonymous with the term “threshold.”

Page 2 of 18 Printed Friday, August 13, 2021

ID

OCXUIID12

OCXUIID13

OCXUIID14

OCXUIID15

OCXUIID16

OCXUIID17

OCXUIID18

OCXUIID19

OCXUIID20

OCXUIID21

OCXUIID22

OCXUIID23

Object Number

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

1.3

1.3.0-1

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) Unique

Instrument Interface Document (UIID)

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.”

All other terms, including “will”, only designate statements of fact or intentions of the government and are not to be interpreted as contractor requirements.

The term “TBD” means, “to be determined.” This is applied to requirements or values that have not been defined. The contractor is responsible for proposing a requirement or value and its corresponding rationale for all TBD requirements.

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

The contractor should request approval from the government before proceeding with its proposed TBD requirement or value.

The term “TBR” means, “to be reviewed.” This is applied to requirements or values that are subject to review by the government and the contractor. The contractor should review and suggest a modified value and rationale for all TBR requirements.

The “TBR” provides an indication that the value may change upon review.

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

The contractor should request approval from the government before proceeding with its proposed TBR requirement or value.

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), and the body reference frame (BRF), will be as 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).

Page 3 of 18 Printed Friday, August 13, 2021

ID

OCXUIID24

OCXUIID25

OCXUIID26

OCXUIID27

OCXUIID28

Object Number

2.1

2.1.0-1

2.2

2.2.0-1

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) 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 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)

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

Page 4 of 18 Printed Friday, August 13, 2021

ID

OCXUIID29

OCXUIID30

OCXUIID31

OCXUIID32

OCXUIID33

OCXUIID34

OCXUIID35

OCXUIID36

OCXUIID37

OCXUIID38

OCXUIID39

OCXUIID40

OCXUIID41

OCXUIID42

OCXUIID43

OCXUIID44

OCXUIID45

OCXUIID46

OCXUIID47

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-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) Unique

Instrument Interface Document (UIID)

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

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 65 million bits per second (TBR) 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.

3.1.3 Application Process Identifiers

The OCX 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 OCX shall transmit to the spacecraft no more than 300 GRDDP Packets per second.

3.2 Power

3.2.1 Average Operational Power

The OCX shall draw operational average power, inclusive of heaters, of no more than 150 Watts from up to four (TBR) 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 OCX shall draw operational maximum power of no more than 240 Watts (TBR).

Operational maximum power is the total power into an instrument averaged over any 20ms period.

3.2.3 Average Survival Power

The OCX shall draw average survival power of no more than 100 (TBR) Watts.

Average survival power is the total power into an instrument averaged over any 72 minute period.

3.2.4 Maximum Survival Power

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ID

OCXUIID48

OCXUIID49

OCXUIID50

OCXUIID51

OCXUIID52

OCXUIID53

OCXUIID54

OCXUIID55

OCXUIID56

OCXUIID57

OCXUIID58

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

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) Unique

Instrument Interface Document (UIID)

The OCX shall draw maximum survival power of no more than 150 (TBR) Watts.

Survival maximum power is the total power into an instrument averaged over any 20ms period.

3.3 Mechanical

The requirements in this section shall 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 OCX, including all units and cabling between units, shall have mass less than 152 (TBR) kilograms.

3.3.2 Cabling Between Units

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

Cables between OCX units shall be the responsibility of the OCX contractor.

3.3.3 Volume

The OCX sensor shall be mounted on the Earth Pointing Platform (EPP) of the spacecraft.

The OCX 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): 1500 millimeters Width (X direction, parallel to orbit): 1220 millimeters Height (Y direction, normal to orbit): 1230 millimeters

Page 7 of 18 Printed Friday, August 13, 2021

ID

OCXUIID63

OCXUIID64

OCXUIID65

OCXUIID66

OCXUIID67

OCXUIID68

OCXUIID69

OCXUIID70

OCXUIID71

OCXUIID72

OCXUIID73

OCXUIID74

OCXUIID75

OCXUIID76

Object Number

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

3.3.7.0-3

3.4

3.4.0-1

3.4.1

3.4.1.0-1

3.4.2

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) Unique

Instrument Interface Document (UIID)

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 50 W back loading.

3.3.6 Field-of-View in the +X direction

The spacecraft shall provide the sensor unit's +X face, a clear calibration FOV of 7.5° centered on the X-axis, in the X-Z plane, and 7.5° centered on the X-axis, in the X-Y plane (TBR).

The spacecraft shall provide the sensor unit's +X face a calibration glint FOV of 65° centered on the X-axis, in both the X-Z and X-Y planes. Glint is defined as stray light from structures such as solar panels, antennas, or other sensors. Any structures within the glint FOV will be negotiated and documented in the Spacecraft to OCX

ICD.

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.

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

3.4 Instrument-to-Spacecraft Disturbances

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

OCX Integrated Angular Momentum Limits

Axis

Limit

(N‐m‐s2) roll 0.5 pitch 0.35 yaw 0.5

3.4.2 Angular Momentum Limits

Page 8 of 18 Printed Friday, August 13, 2021

ID

OCXUIID77

OCXUIID78

OCXUIID79

OCXUIID80

Object Number

3.4.2.0-1

3.4.2.0-2

3.4.3

3.4.3.0-1

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) Unique

Instrument Interface Document (UIID)

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.

OCX Angular Momentum Limits

Axis Limit

(N‐m‐s) roll 0.1 pitch 0.05 yaw 0.1

The absolute value of the band pass filtered instrument angular momentum shall not exceed the values listed in the One-Sixth Octave Band Filtered Angular Momentum Limits table. The table limits apply for each orthogonal axis. The band pass filters for the angular momentum are defined as a series of Butterworth band pass filters with -3 dB cutoff frequencies separated by one sixth of an octave, with a fourth order roll off and with a center frequency one-twelfth octave between the cutoff frequencies. The Filtered Angular Momentum Limits apply when the center frequency for the filter is greater than f1 and less than or equal to f2. The series of filters starts with a center frequency at 0.015625 Hz, and the center frequency is stepped by one-twelfth octave increments.

OCX Bandpass‐Filtered Angular Momentum Limits 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 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 axis after the acceleration is filtered using at least a fourth-order band pass Butterworth filter with -3dB frequencies at f1 and f2 and with a fourth order roll off. Note that the filter has a fourth-order roll-off on both sides of the response.

Page 9 of 18 Printed Friday, August 13, 2021

ID

OCXUIID80

Object Number

3.4.3.0-1

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) Unique

Instrument Interface Document (UIID)

Instrument‐to‐Spacecraft Space Linear Acceleration Limits f1 (Hz) f1 (Hz)

Peak Limit

(milli‐g) f1 (Hz) f1 (Hz)

Peak Limit

(milli‐g) f1 (Hz) f1 (Hz)

Peak Limit

(milli‐g)

0.0 512.0 0.85 26.9 30.2 0.06 114.0 128.0 0.06

0.9 10.1 0.77 28.5 32.0 0.06 120.8 135.6 0.06

6.3 32.0 0.22 30.2 33.9 0.06 128.0 143.7 0.06

20.2 101.6 0.22 32.0 35.9 0.06 135.6 152.2 0.06

64.0 322.5 0.22 33.9 38.1 0.06 143.7 161.3 0.06

203.2 512.0 0.16 35.9 40.3 0.06 152.2 170.9 0.06

9.0 10.1 0.06 38.1 42.7 0.06 161.3 181.0 0.06

9.5 10.7 0.06 40.3 45.3 0.06 170.9 191.8 0.06

10.1 11.3 0.06 42.7 47.9 0.06 181.0 203.2 0.06

10.7 12.0 0.06 45.3 50.8 0.06 191.8 215.3 0.06

11.3 12.7 0.06 47.9 53.8 0.06 203.2 228.1 0.06

12.0 13.5 0.06 50.8 57.0 0.06 215.3 241.6 0.06

12.7 14.3 0.06 53.8 60.4 0.06 228.1 256.0 0.06

13.5 15.1 0.06 57.0 64.0 0.06 241.6 271.2 0.06

14.3 16.0 0.06 60.4 67.8 0.06 256.0 287.4 0.06

15.1 17.0 0.06 64.0 71.8 0.06 271.2 304.4 0.06

16.0 18.0 0.06 67.8 76.1 0.06 287.4 322.5 0.06

17.0 19.0 0.06 71.8 80.6 0.06 304.4 341.7 0.06

18.0 20.2 0.06 76.1 85.4 0.06 322.5 362.0 0.06

19.0 21.4 0.06 80.6 90.5 0.06 341.7 383.6 0.06

20.2 22.6 0.06 85.4 95.9 0.06 362.0 406.4 0.06

21.4 24.0 0.06 90.5 101.6 0.06 383.6 430.5 0.06

22.6 25.4 0.06 95.9 107.6 0.06 406.4 456.1 0.06

24.0 26.9 0.06 101.6 114.0 0.06 430.5 483.3 0.06

25.4 28.5 0.06 107.6 120.8 0.06 456.1 512.0 0.06

Page 10 of 18 Printed Friday, August 13, 2021

ID

OCXUIID81

OCXUIID82

OCXUIID83

OCXUIID84

OCXUIID85

OCXUIID86

OCXUIID87

OCXUIID88

OCXUIID89

OCXUIID90

OCXUIID91

OCXUIID92

OCXUIID93

Object Number

3.4.3.0-2

3.4.4

3.4.4.0-1

3.4.4.0-2

3.4.4.0-3

3.4.4.0-4

3.4.4.0-5

3.4.4.0-6

3.4.4.0-7

3.4.4.0-8

3.4.4.0-9

3.4.4.0-10

3.4.4.0-11

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) Unique

Instrument Interface Document (UIID)

The translational accelerations induced by the instrument sensor unit at each mount shall produce an absolute peak acceleration Shock Response Spectra (SRS) less than the limits set in the Instrument to Spacecraft Linear Acceleration SRS Limits Table below. The limits apply to each orthogonal axis when using a quality factor, Q, of 50. The SRS is computed after the translational accelerations are high pass filtered with a fourth order Butterworth with a -3dB cut off at 1.0Hz. Use a logarithmic interpolation for both frequency and acceleration terms in the Instrument to Spacecraft Acceleration SRS Limits Table.

OCX to S/C Linear Acceleration SRS Limits (1/Q) f

(Hz)

SRS Limit/Q

(milli‐g)

10 0.04

512 0.04

3.4.4 Predicted Interface Force and Torque (PIFT) Responses

The OCX shall send predicted forces, torques and future times to the spacecraft in a CCSDS source packet per the Command and Data Handling section of the GIRD.

The OCX shall send to the spacecraft predicted forces and torques resulting from normal instrument operations including any calibration operations.

The OCX shall send to the spacecraft predicted forces and torques computed in the instrument coordinate system.

The OCX shall send to the spacecraft forces and torques predicted from a uniformly spaced series of future times.

The OCX shall increment the future time values for predicted forces and torques sent to the spacecraft by 50 ms or less.

The OCX shall send to the spacecraft predicted forces and torques at least 250 ms prior to the predicted time.

The OCX shall send to the spacecraft predicted forces and torques with the future time data using the P-field format in the GIRD.

The OCX shall send to the spacecraft predicted force data with a minimum resolution of 0.001 N.

The OCX shall send to the spacecraft predicted torque data with a minimum resolution of 0.001 N-m.

The OCX shall send to the spacecraft predicted force data with an accuracy of +/-

0.03 N.

The OCX shall send to the spacecraft predicted torque data with an accuracy of +/-

0.03 N-m.

Page 11 of 18 Printed Friday, August 13, 2021

ID

OCXUIID94

OCXUIID95

OCXUIID96

OCXUIID97

Object Number

3.4.5

3.4.5.0-1

3.4.5.0-2

3.4.6

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) Unique

Instrument Interface Document (UIID)

3.4.5 Spacecraft Mounting Stiffness

The instrument shall meet its performance requirements while the sensor unit is mounted to a rigid plate supported at three flexible points with a first mode of 20 +/- 5 Hz (TBR) and with the 6th mode less than 50 Hz.

The instrument shall meet its performance requirements when the diagonal modal viscous damping factors associated with the three flexible points are 0.1%.

3.4.6 External Sourced Translation Acceleration Limits

Page 12 of 18 Printed Friday, August 13, 2021

ID

OCXUIID98

OCXUIID99

Object Number

3.4.6.0-1

3.4.6.0-2

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) Unique

Instrument Interface Document (UIID)

The translational accelerations responses from sources external to the instrument sensor unit at the spacecraft side of each instrument sensor unit mount shall not exceed the limits specified in the Externally Source Translational Acceleration Limits for Spacecraft to Instrument Table below. The limits apply to each orthogonal axis after the acceleration is filtered using at least a fourth-order band pass Butterworth filter with -3dB frequencies at f1 and f2 and with a fourth order roll off. Note that the filter has a fourth-order roll-off on both sides of the response.

Externally Sourced Translational Acceleration Limits for Spacecraft to Instrument Table f1

(Hz) f2

Peak

Limit

(milli‐g)

Peak

Limit

(milli‐g)

Peak

Limit

(milli‐g)

0.0 512.0 10.91 26.9 30.2 0.21 114.0 128.0 1.94

0.9 10.1 2.02 28.5 32.0 0.21 120.8 135.6 1.94

6.3 32.0 0.77 30.2 33.9 0.21 128.0 143.7 1.94

20.2 101.6 3.16 32.0 35.9 0.21 135.6 152.2 1.56

64.0 322.5 8.05 33.9 38.1 0.21 143.7 161.3 1.56

203.2 512.0 9.13 35.9 40.3 0.45 152.2 170.9 1.56

9.0 10.1 0.21 38.1 42.7 0.45 161.3 181.0 2.29

9.5 10.7 0.21 40.3 45.3 0.45 170.9 191.8 2.29

10.1 11.3 0.21 42.7 47.9 0.45 181.0 203.2 2.29

10.7 12.0 0.21 45.3 50.8 0.59 191.8 215.3 2.29

11.3 12.7 0.21 47.9 53.8 0.59 203.2 228.1 3.33

12.0 13.5 0.21 50.8 57.0 0.59 215.3 241.6 3.33

12.7 14.3 0.21 53.8 60.4 1.86 228.1 256.0 3.33

13.5 15.1 0.21 57.0 64.0 1.86 241.6 271.2 3.33

14.3 16.0 0.21 60.4 67.8 1.86 256.0 287.4 3.33

15.1 17.0 0.21 64.0 71.8 1.86 271.2 304.4 3.33

16.0 18.0 0.21 67.8 76.1 0.81 287.4 322.5 3.33

17.0 19.0 0.21 71.8 80.6 0.81 304.4 341.7 3.33

18.0 20.2 0.21 76.1 85.4 0.81 322.5 362.0 3.33

19.0 21.4 0.21 80.6 90.5 0.81 341.7 383.6 3.33

20.2 22.6 0.21 85.4 95.9 0.81 362.0 406.4 3.33

21.4 24.0 0.21 90.5 101.6 0.81 383.6 430.5 3.33

22.6 25.4 0.21 95.9 107.6 0.81 406.4 456.1 3.33

24.0 26.9 0.21 101.6 114.0 0.81 430.5 483.3 3.33

25.4 28.5 0.21 107.6 120.8 1.94 456.1 512.0 3.33

The translational acceleration responses from sources external to the instrument sensor unit at the spacecraft side of each instrument sensor unit mount shall produce an absolute peak acceleration Shock Response Spectra (SRS) less than the limits set in the External Source On Orbit Operational SRS Acceleration Limits Table below. The limits apply to each orthogonal axis for SRS natural frequencies when using a quality factor, Q, of 50. The SRS is computed after the acceleration is high pass filtered with a fourth order Butterworth filter with a -3dB cut off at 1.0 Hz. Use a logarithmic interpolation for both frequency and acceleration terms in the

Page 13 of 18 Printed Friday, August 13, 2021

ID

OCXUIID99

OCXUIID100

OCXUIID101

OCXUIID102

OCXUIID103

Object Number

3.4.6.0-2

3.5

3.5.0-1

3.6

3.6.0-1

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) Unique

Instrument Interface Document (UIID)

Externally Source On Orbit Operational SRS Acceleration Limits Table.

Externally Sourced On Orbit Operational SRS Accelerations Limits Tables f

SRS

Limit /Q (mg) f

SRS

Limit /Q (mg)

10.0 0.18 177.0 1.54

36.0 0.18 198.0 1.54

36.0 0.30 209.8 1.16

55.7 0.30 222.8 1.16

59.0 1.54 236.0 1.77

66.0 1.54 264.0 1.77

69.9 0.72 279.1 1.25

111.4 0.72 295.0 1.77

118.0 1.54 330.0 1.77

132.0 1.54 349.6 1.77

139.8 0.76 483.3 1.77

167.1 0.76 512.0 1.77

3.5 Thermal

The total heat transfer to the spacecraft of all instrument electronics units shall not exceed 150 Watts.

3.6 Instrument Purge Requirements

The spacecraft shall provide a continuous GN2 purge to the integrated OCX sensor module when not under vacuum via the T-0 purge system.

Page 14 of 18 Printed Friday, August 13, 2021

ID

OCXUIID104

OCXUIID105

Object Number

4.0-1

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) 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 18 Printed Friday, August 13, 2021

ID

OCXUIID106

OCXUIID107

OCXUIID108

OCXUIID109

Object Number

5.0-1

5.1

5.1.0-1

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) 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.

5.1 Attitude Rate Error

The instrument shall meet all image performance requirements while amplitudes of the instrument mounting frame (IMF) angular rates per axis relative to the ORF and the total spacecraft angular rate data latency are less than the limits in the Instrument Limit for Angular Rate Error vs Latency Figure provided below. This requirement supersedes the GIRD54 requirement.

Total Spacecraft Gyro Signal Latency and Angular Rate Error Trade Space Figure

Page 16 of 18 Printed Friday, August 13, 2021

ID

OCXUIID110

OCXUIID111

OCXUIID112

OCXUIID113

OCXUIID114

OCXUIID115

OCXUIID116

OCXUIID117

OCXUIID118

OCXUIID119

OCXUIID120

OCXUIID121

Object Number

6.0-1

6.1

6.1.0-1

6.1.0-2

6.1.0-3

6.2

6.2.0-1

6.2.0-2

6.2.0-3

6.2.0-4

6.2.0-5

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) Unique

Instrument Interface Document (UIID)

6 Design Verification Requirements The following requirements represents only a portion of the overall system verification (i.e., contractor derived requirements are not described) that must be integrated into the total system program which verifies that the system will meet the mission requirements.

6.1 Radiated Emissions, Electric Field (RE 102)

The test procedure used for this test shall be in accordance with MIL-STD-461G, RE102.

Radiated narrow band electric field levels generated by the instrument shall not exceed the levels specified in Figure RE102-3 of MIL-STD-461G, applicable to fixed wing external.

Radiated narrow band electric field levels generated by the instrument shall not exceed the levels specified in the Radiated Emissions Notch Table.

Radiated Emissions Notch Table

Frequency

Range (MHz) Rationale

Limits

(dBuV/meter)

1560 ‐ 1595

(TBR)

GPS 10 (TBR)

2033.5 ‐ 2038

(TBR)

CDAS Cmd, ORTT&C Cmd

12 (TBR)

6.2 Radiated Emissions in DCS Receiver Bands

Radiated emission measurements in the DCS receiver bands shall be made in accordance with MIL-STD-461G, RE102 with the EMI meter replaced by a spectrum analyzer preceded by a low noise pre-amplifier such that the test system noise figure is equal to or less than 3 dB, e.g., an HP-8566 spectrum analyzer preceded by a MITEQ AU-2A-0550 pre-amplifier or equivalent.

The spectrum analyzer levels and the difference in the levels shall be recorded for both white noise and spurious signals before and after power is applied to the instrument clock and control signals.

The test antenna shall be tuned to the center of the frequency band specified in DCS EMC Test Parameters Table.

Prior to making the actual measurements, the test antenna shall be de-mated and the cable terminated with 50 ohms for self-calibration.

The noise floor of the measuring equipment shall be verified to be lower than the specified maximum signal level in a 100 Hz resolution bandwidth.

Page 17 of 18 Printed Friday, August 13, 2021

ID

OCXUIID122

Object Number

6.2.0-6

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) Unique

Instrument Interface Document (UIID)

Radiated emission levels generated by the instrument shall not exceed the maximum signal levels specified in the DCS EMC Test Parameters Table below.

DCS EMC Test Parameters Table

Unit Name DCS

Band

(MHz)

Measurement

Bandwidth

(Hz)

Dwell

Time

(Seconds)

Minimum

Measurement

Time Analog

Measurement

Receiver

(sec/kHz)

Max. Filed

Intensity

(dBuV/m)

Instrument

Electronics

Box

401.700

402.400

100 .015 0.15 10 (each box) TBR

Page 18 of 18 Printed Friday, August 13, 2021

ID

OCXUIID123

OCXUIID124

Object Number

7.0-1

418-XO-OCXUIID-0062, RM Version, Geostationary Extended Observations (GeoXO) Ocean Color Instrument (OCX) 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 EPP Earth Pointing Platform GOES Geostationary Operational Environmental Satellite GSFC Goddard Space Flight Center OCX Ocean Color Instrument for GeoXO Hz Hertz ICD Interface Control Document IDD Instrument Description Document IMF Instrument Mounting Frame kg kilogram m meter Mbps million bits per second 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 TBS to be specified UIID Unique Instrument Interface Document

Effective Date: August 12, 2021 418-XO-OCXUIID-0062 Expiration Date: Five years from date of last signature Baseline Version 1.0 Responsible Organization: GeoXO Flight Project/Code 418

Document Change Record (DCR)

CCR GeoXO#: X00019 Rev: A Title: 418-XO-OCXUIID-0062 Baseline OCX UIID Contract # N/A GOES S/C: GeoXO Effectivity: Instruments CCB Status: Approved Doc #: 418-XO-OCXUIID-0062 CCB Date: 08/12/2021 Doc Version: 1.0 Contract Mod#: N/A DOORs Version: 1.0 Doc Change Date: August 12, 2021 DOORs ID #: All