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: AcceptedTable 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 |
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
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 |
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 |
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. |
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:
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.
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
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
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
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).
Author and Curator:
Dr. D.R. Williams, dwilliam@nssdc.gsfc.nasa.gov, +1-301-286-1258