IMAGE Detailed Mission Requirements (DMR)

Final - July 1998

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IMAGE 2210 -- DSN Radio Metric Requirements

2210.1		The DSN shall transmit, in near-real-time, radio metric
                data to the SMOC.

DSN Response: Accepted

2210.3          The DSN shall transmit the radio metric data in the DSN TRK-2-15A format
                until at least 120 days after the MAP launch, after which the data format
                may be changed to the DSN TRK-2-34 format, or while using the 26 meter
                subnet for range rate shall comply with DSN Data type 7, (STDN 724) UTDF
                format.

DSN Response: Accepted

2210.3		The DSN Tracking System fractional frequency stability
                (Allan deviation) shall be 3x10-13 s/s (3 sigma) or better over an 8 hour
                period.

DSN Response: Accepted

2210.4		The DSN shall provide the capability re-transmit radio
                metric data within 48 hours of receipt at the station, upon request by the
                SMOC.

DSN Response: Accepted

2210.5		On request, the DSN shall provide radio metric data
                received from the IMAGE spacecraft in accordance with requirements
                summarized in Table 2000-3.

DSN Response: Accepted
Table 2000-3: DSN Radio Metric Requirements

Mission
Phase		 Service Data
Type		 Pass
Frequency		 Data Sample Rate Accuracy
(3 sigma)		 Data
Delivery		 Data
Dest.
Launch to
L+7 days
Reorientation		 26 m,
34 m		 Doppler,
sequential
ranging		 Continuous Doppler: 1 per 10
sec		 Range bias: 15 m
Range noise: 1.5 m
Range rate noise:
3 mm/s		 Real-time
at rate of 1
every 10
sec		 SMOC
Spin-up #1
L+8 to
L+14		 34 m Doppler,
sequential
ranging		 1 - 30 min.
pass per
13.5 hour
orbit		 Doppler: 1 per 10
sec		 Range bias: 15 m
Range noise: 1.5 m
Range rate noise:
3 mm/s		 Real-time
at rate of 1
every 10
sec		 SMOC
Deploy #1
L+15		 34 m Doppler,
sequential
ranging		 Continuous Doppler: 1 per 10
sec		 Range bias: 15 m
Range noise: 1.5 m
Range rate noise:
3 mm/s		 Real-time
at rate of 1
every 10
sec		 SMOC
Spin-up #2
L+16 to
L+18		 34 m Doppler,
sequential
ranging		 1 - 30 min.
pass per
13.5 hour
orbit		 Doppler: 1 per 10
sec		 Range bias: 15 m
Range noise: 1.5 m
Range rate noise:
3 mm/s		 Real-time
at rate of 1
every 10
sec		 SMOC
Deploy #2
L+19		 34 m Doppler,
sequential
ranging		 Continuous Doppler: 1 per 10
sec		 Range bias: 15 m
Range noise: 1.5 m
Range rate noise:
3 mm/s		 Real-time
at rate of 1
every 10
sec		 SMOC
Spin-up #3
L+20 to
L+22		 34 m Doppler,
sequential
ranging		 1 - 30 min.
pass per
13.5 hour
orbit		 Doppler: 1 per 10
sec		 Range bias: 15 m
Range noise: 1.5 m
Range rate noise:
3 mm/s		 Real-time
at rate of 1
every 10
sec		 SMOC
Deploy #3
L+23		 34 m Doppler,
sequential
ranging		 Continuous Doppler: 1 per 10
sec		 Range bias: 15 m
Range noise: 1.5 m
Range rate noise:
3 mm/s		 Real-time
at rate of 1
every 10
sec		 SMOC
Science
First
Images
L+24		 34 m Doppler,
sequential
ranging		 1 - 30 min.
pass per
13.5 hour
orbit		 Doppler: 1 per 10
sec		 Range bias: 15 m
Range noise: 1.5 m
Range rate noise:
3 mm/s		 Real-time
at rate of 1
every 10
sec		 SMOC
Spin-up #4
L+25 to
L+35		 34 m Doppler,
sequential
ranging		 Continuous Doppler: 1 per 10
sec		 Range bias: 15 m
Range noise: 1.5 m
Range rate noise:
3 mm/s		 Real-time
at rate of 1
every 10
sec		 SMOC
Instrument
Checkout
L+36 to
L+39		 34 m Doppler,
sequential
ranging		 1 - 30 min.
pass per
13.5 hour
orbit		 Doppler: 1 per 10
sec		 Range bias: 15 m
Range noise: 1.5 m
Range rate noise:
3 mm/s		 Real-time
at rate of 1
every 10
sec		 SMOC
Science
HV(LENA)
L+40		 34 m Doppler,
sequential
ranging		 Continuous Doppler: 1 per 10
sec		 Range bias: 15 m
Range noise: 1.5 m
Range rate noise:
3 mm/s		 Real-time
at rate of 1
every 10
sec		 SMOC
Nominal
Ops
L+41 to
EOM		 34 m Doppler,
sequential
ranging		 1 - 30 min.
pass per
13.5 hour
orbit		 Doppler: 1 per 10
sec		 Range bias: 15 m
Range noise: 1.5 m
Range rate noise:
3 mm/s		 Real-time
at rate of 1
every 10
sec		 SMOC

IMAGE 2215 -- DSN Navigation System Requirements

2215.1          The DSN shall provide radio metric data to the SMOC as per the requirements
                in section 2210.

DSN Response: Accepted

2215.2          The DSN shall provide the SMOC an STK version 4.0 formatted ephemeris file
                as specified in appendix AA of the JPL to GSFC ICD.

DSN Response: Accepted

2215.3          The DSN shall perform definitive orbit determination, definitive orbit
                propagation, and predictive orbit propagation.

DSN Response: Accepted

2215.4          The maximum error permitted in the definitive orbit ephemeris shall be 50
                kilometers of uncertainty, 3 sigma.

DSN Response: Accepted

2215.5          The DSN shall generate short term planning products in the form of STK
                version 4.0 ephemerides consisting of position, velocity and acceleration
                vectors in GCI coordinates.

DSN Response: Accepted

2215.6          The DSN shall generate the acquisition data.

DSN Response: Accepted

2215.7          The DSN shall generate long term planning products of 2 years duration
                every 3 months in the form of STK version 4.0 ephemerides consisting of
                position, velocity and acceleration vectors in GCI coordinates.


DSN Response: Accepted

2215.8          The DSN shall provide a 3 week ephemeris for science data planning.

DSN Response: Accepted

IMAGE 2220 -- DSN Telemetry Requirements

2220.1		The DSN shall support pre-launch testing which will consist
                of tests to ensure RF, command, radio metric, and telemetry compatibility
                with the IMAGE spacecraft.

DSN Response: Accepted

2220.2		The DSN shall meet the telemetry requirements summarized in Table 2000-4.

Table 2000-4: DSN Telemetry Requirements

Mission
Phase		 Service Data
Type		 Total Bit Rate Passes/Orbit Pass Duration Comments
Launch to
L+7 days
Reorientation		 34 m VC0,
VC1,
VC4		 PN, R/S Encoded: 44,000 bps Continuous Continuous  
Spin-up #1
L+8 to L+14		 34 m VC0,
VC1,
VC4		 PN, R/S Encoded: 44,000 bps 1 1 - 30 min. pass
per 13.5 hour
orbit		  
Deploy #1
L+15		 34 m VC0,
VC1,
VC4		 PN, R/S Encoded: 44,000 bps Continuous Continuous  
Spin-up #2
L+16 to L+18		 34 m VC0,
VC1,
VC4		 PN, R/S Encoded: 44,000 bps 1 1 - 30 min. pass
per 13.5 hour
orbit		  
Deploy #2
L+19		 34 m VC0,
VC1,
VC4		 PN, R/S Encoded: 44,000 bps Continuous Continuous  
Spin-up #3
L+20 to L+22		 34 m VC0,
VC1,
VC4		 PN, R/S Encoded: 44,000 bps 1 1 - 30 min. pass
per 13.5 hour
orbit		  
Deploy #3
L+23		 34 m VC0,
VC1,
VC4		 PN, R/S Encoded: 44,000 bps Continuous Continuous  
Science
First Images
L+24		 34 m VC0,
VC1,
VC4		 PN, R/S Encoded: 2,285,700
bps		 1 1 - 30 min. pass
per 13.5 hour
orbit		  
Spin-up #4
L+25 to L+35		 34 m VC0,
VC1,
VC2,
VC3,
VC4		 PN, R/S Encoded: 2,285,700
bps		 Continuous Continuous  
Instrument
Checkout
L+36 to L+39		 34 m VC0,
VC1,
VC4		 PN, R/S Encoded: 2,285,700
bps		 1 1 - 30 min. pass
per 13.5 hour
orbit		  
Science
HV(LENA)
L+40		 34 m VC0,
VC1,
VC2,
VC3,
VC4		 PN, R/S Encoded: 2,285,700
bps		 Continuous Continuous  
Nominal Ops
L+41 to EOM		 34 m VC0,
VC1,
VC4		 PN, R/S Encoded: 2,285,700
bps		 1 1 - 30 min. pass
per 13.5 hour
orbit		 Nominal R/T
and science
data

DSN Response: Accepted

IMAGE 2230 -- DSN Command Requirements

2230.1		The DSN shall support a command rate of 2000 bps with IMAGE.

DSN Response:

2230.2		The DSN shall support the command requirements listed in Table 2000-5.

Table 2000-5: DSN Command Requirements

Mission
Phase		 Service Data
Type		 Total Bit Rate Passes/Orbit Pass Duration Comments
Launch to
L+7 days
Reorientation		 DSN
34 m/ 26 m
(S-band omni)		 Command 2000 bps Continuous Continuous  
Spin-up #1
L+8 to L+14		 DSN
34 m/ 26 m
(S-band omni)		 Command 2000 bps 1 1 - 30 min. pass
per 13.5 hour
orbit		  
Deploy #1
L+15		 DSN
34 m/ 26 m
(S-band omni)		 Command 2000 bps Continuous Continuous  
Spin-up #2
L+16 to L+18		 DSN
34 m/ 26 m
(S-band omni)		 Command 2000 bps 1 1 - 30 min. pass
per 13.5 hour
orbit		  
Deploy #2
L+19		 DSN
34 m/ 26 m
(S-band omni)		 Command 2000 bps Continuous Continuous  
Spin-up #3
L+20 to L+22		 DSN
34 m/ 26 m
(S-band omni)		 Command 2000 bps 1 1 - 30 min. pass
per 13.5 hour
orbit		  
Deploy #3
L+23		 DSN
34 m/ 26 m
(S-band omni)		 Command 2000 bps Continuous Continuous  
Science
First Images
L+24		 DSN
34 m/ 26 m
(S-band omni)		 Command 2000 bps 1 1 - 30 min. pass
per 13.5 hour
orbit		  
Spin-up #4
L+25 to L+35		 DSN
34 m/ 26 m
(S-band omni)		 Command 2000 bps Continuous Continuous  
Instrument
Checkout
L+36 to L+39		 DSN
34 m/ 26 m
(S-band omni)		 Command 2000 bps 1 1 - 30 min. pass
per 13.5 hour
orbit		  
Science
HV(LENA)
L+40		 DSN
34 m/ 26 m
(S-band omni)		 Command 2000 bps Continuous Continuous  
Nominal Ops
L+41 to EOM		 DSN
34 m/ 26 m
(S-band omni)		 Command 2000 bps 1 1 - 30 min. pass
per 13.5 hour
orbit		  

DSN Response: Accepted

IMAGE 2240 -- DSN Compatibility Test Trailer Requirements

2240.1		The DSN Compatibility Test Trailer (CTT) will be required
                to support testing as follows:

Table 2000-6: DSN CTT Support Requirements

Test
Dates		 Test Activity/
Title		 Location Test/Activity Description/Contents
2/9/99 -
2/9/99		 IMAGE R/F Compatibility Test #1 LMMS at
Sunnyvale		 RF checked between S/C XPNDR -
CTT/DSN.
2/10/99 IMAGE System Compatibility Test #1
(SMOC Compatibility Test #1)		 LMMS at
Sunnyvale		 R/T data sent through DSN to SMOC,
CMDS from SMOC/DSN/CTT to S/C.
8/9/99 -
8/11/99		 IMAGE System Compatibility Test #2
(IOC Mission Simulation)		 LMMS at
Sunnyvale		 R/T and Playback (PB) data sent
through DSN to SMOC, CMDS from
SMOC/DSN/CTT to S/C. IOC Mission
Simulation performed.
12/7/99 -
12/8/99		 IMAGE Launch Site R/F Compatibility
Test		 VAFB RF checked between S/C XPNDR -
CTT/DSN.
12/8/99 -
12/9/99		 IMAGE Launch Site System
Compatibility Test
(SMOC Compatibility Test)		 VAFB SMOC performs I/F checkouts with
OBS and DSN with OBS in VAFB I&T
Bldg. 1610.

DSN Response: Accepted

IMAGE 3000 -- Testing and Training Summary

The IMAGE spacecraft will be integrated and tested at LMMS. The IMAGE payload will be integrated and tested at SwRI. The IMAGE observatory will be integrated and tested at LMMS. After transfer of the IMAGE observatory to the WR, testing will continue until launch.

Instrument Integration. Instrument integration will be performed at SwRI. Upon completion of Payload Deck integration, the Payload Deck will be shipped to the spacecraft integration area to be incorporated into the spacecraft.

SMOC and Spacecraft Integration and Testing Approach. The SMOC will be developed and integrated concurrently with the spacecraft. Near-continuous access to the spacecraft data will be available during this process. Standard interfaces, common databases, procedures, and display pages will be developed and utilized. Testing will be sequenced as follows: spacecraft Unit and Integration Testing will be performed by LMMS; SMOC system testing will be performed by an integrated controller/developer team in an engineering mode; near-continuous spacecraft testing will be conducted during the I&T period; SMOC interface, network, and end-to-end testing will be performed; and mission and launch simulations will be conducted.

The following SMOC system elements and interfaces will be tested:

  1. SMOC systems and functions residing at the GSFC SMOC, SwRI, and LMMS, including mission operations; S/C, instrument, and Payload command and control; and science operations.

  2. RF support systems including the DSN.

  3. Communication networks and protocols providing telemetry, command, radio metric, and mission control support voice communications.

Training and qualification of the SMOC operations personnel will be conducted. In addition, simulations will be conducted prior to launch that prepare all personnel involved in end-to-end mission operations for flight. Several nominal, Launch, IOC, and contingency operations simulations employing operator personnel, voice lines, facilities, procedures and systems will be performed to test the ground system operations organization and systems.

IMAGE 3100 -- Compatibility Testing

3100.1		Testing shall be performed to verify the compatibility of
                the ground facilities with the spacecraft and launch vehicle.
                Compatibility testing shall include RF compatibility and system
                compatibility (command compatibility, telemetry compatibility, and data I/F
                compatibility).  The DSN shall perform compatibility testing as specified
                by the DSN Compatibility Test Plan for IMAGE.

Response: Requirement will be met
DSN Response: Accepted

3100.2		The Project shall generate the DSN Compatibility Test Plan
                for IMAGE for performing RF and system compatibility tests between DSN and
                the IMAGE S/C.

Response: Requirement will be met

3100.3		The DSN shall generate a report of RF testing results for
                use by the project.

DSN Response: Accepted

3100.4		Compatibility tests between the S/C and the SMOC shall be
                conducted with either direct access to the spacecraft, when commanding is
                required, or via spacecraft telemetry data flows when available.

Response: Requirement will be met

3100.5		The Compatibility Test Trailer shall be used to perform
                testing of the DSN capabilities and S/C RF I/Fs to the DSN, and for
                end-to-end testing.

DSN Response: Accepted

3100.6		The DSN shall generate the Compatibility Test Procedures
                for performing RF compatibility tests between DSN and the IMAGE spacecraft.

DSN Response: Accepted

IMAGE 3200 -- Network Readiness Testing

3200.1		Network Readiness testing shall be conducted with DSN to
                verify the functional interfaces between GSFC and DSN, and to ensure the
                mission readiness of DSN hardware, software, and personnel.  Test plans
                shall be created by GSFC and made available for DSN and IMAGE Project
                review and approval.  The network readiness tests shall include, but are
                not limited to, tests that perform the following functions:

                3200.1.1 Testing shall verify that telemetry data flows, at all required
                data rates are properly processed and handled by the DSN, S/C, and SMOC.

                Response: Requirement will be met
                DSN Response: Accepted

                3200.1.2 Testing shall verify that all command flows are properly processed
                and handled by the DSN, S/C, and SMOC.

                Response: Requirement will be met
                DSN Response: Accepted

                3200.1.3 Testing shall verify that all radio metric data flows are properly
                processed and handled by the DSN, S/C, and SMOC.

                Response: Requirement will be met
                DSN Response: Accepted

                3200.1.4 Testing shall verify that status and accounting information
                provided by the DSN are correct.

                Response: Requirement will be met
                DSN Response: Accepted

                3200.1.5 Testing shall verify proper operation of all the scheduling system
                interfaces.

                Response: Requirement will be met
                DSN Response: Accepted

                3200.1.6 Testing shall verify proper operation of all voice communication
                interfaces.

                Response: Requirement will be met
                DSN Response: Accepted

IMAGE 3300 -- Mission Readiness Testing

3300.1		Ground System Verification testing shall be conducted to
                verify the performance and demonstrate the readiness of the ground system
                to support the IMAGE mission.

3300.2		A Ground System Verification Plan containing all SMOC
                system test plans shall be created by GSFC and made available for project
                review and approval for all tests.

3300.3		The Ground System Verification Tests shall include:

                3300.3.1 Telemetry and R/T Command Processing Tests

                3300.3.2 Science Data Processing Tests

                3300.3.3 Telemetry/Radio Metric/Command Processing Tests

                3300.3.4 Mission/Science Planning Tests

                3300.3.5 Launch Site to GSFC I/F Tests

                3300.3.6 Fully integrated ground system tests

                3300.3.7 Autonomous system tests

                3300.3.8 Nominal, L&EO, IOC, and contingency Mission Simulations.

3300.4		The IMAGE system compatibility verification shall be
                accomplished through hardline and RF data flows with the spacecraft at LMMS
                and VAFB.

3300.5		A Mission Readiness Plan containing all IMAGE mission test
                plans shall be created by GSFC and made available for project review and
                approval.
		
Response: Requirements will be met

IMAGE 3500 -- Training

The training of the IMAGE SCT is an integral part of the overall mission development. The SCT will support the IMAGE mission from beginning to end. The SCT will receive training associated with the DSN interface for scheduling contacts and data playbacks. Additional training will be provided specific to operations being run with an unmanned SMOC.

The SCT's responsibilities will change and progress as the mission's development progresses. The SCT has the responsibility for providing operations oriented input during development and testing. The SCT subsequently assumes the responsibilities for performing launch and on-orbit operations. The integral usage of the SCT in the development process enables knowledge capture and operations experience to be acquired early and utilized throughout I&T and on-orbit operations. In addition to the hands-on experience the SCT gains during the development and test phase, the SCT will attend and support reviews and generate mission documentation. Details on the training of IMAGE personnel are given in the Mission Operations Plan (MOP).

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Author and Curator:

Dr. D.R. Williams, dwilliam@nssdc.gsfc.nasa.gov, +1-301-286-1258
NSSDC, Mail Code 633, NASA/Goddard Space Flight Center, Greenbelt, MD 20771
NASA Approval: J. L. Green, james.l.green@gsfc.nasa.gov
Last Revised: 04 November 1998