THEMIS IDPU FSW 11/29/2015 1 UCB THEMIS IDPU FSW V4 Mission Profile Tests Peter Harvey Michael...

THEMIS IDPU FSW 04/18/23 1 UCB

THEMIS

IDPU FSW V4

Mission Profile Tests

Peter Harvey

Michael Ludlam


Agenda

Agenda1. Overview of Science Objectives

2. MPT Objectives and Method

3. Typical Orbit Simulations

4. Instrument Required Operations (FGM to ESA)

5. Instrument Scripts

6. Simulation Results

7. Conclusion


Science Objectives

Science Objectives• Observe Onset and Evolution of Magnetospheric Substorm Instability• Operate 5 Space Probes and 20 Ground Based Observatories• Collect Low Rate (Slow) Survey Data for Full Orbits• Collect High Rate (Fast) Survey during Conjunctions• Identify Substorms and Collect Particle and Wave Burst Data during

Conjunctions

P4

P3P5

P2 P1GBO


Region Crossings & Triggers

Region Crossings & Triggers

Region Definition of Region Activity at Region Entry / Exit

Earth & Lunar Shadows Solar Disk Obscured by > 1% EFI in eclipse mode (change BEB bias table)

Inner & Outer Radiation Belts (RBT)

Probe within L=6 SST in attenuated mode (close attenuator, turn off autonomous att.)

Deep Plasma Sphere (PSH)

Probe within L=4 EFI in high-density mode (change BEB bias table)

Foreshock Solar Wind (FSW)

Outside of nominal bow shock distance D minus a tolerance t [t= min(3RE, half-sheath thickness).

ESA in foreshock mode (ETC table load, keep standard sweeps)

Solar Wind Beam (SWB) P1, in dayside RE only, at XGSE> 20RE ESA in solar wind beam mode (ETC table load, command double sweeps)

High Mag Field (HMF) |B_model| (T89, Kp=2) < 500nT FGM in most sensitive range

Perigee (PG1) Perigee +/- 1 hour MAG calibration (SCM cal 1 minute, FGM 405 for 2 hours)

Average Plasma Sheet (PSP)

Hammond model, <5RE thick Potential conjunction.

North American Sector (NOA)

In/Out ± 6.5 GLT hrs of Central Canada Potential conjunction.

Probe Conjunctions (C4D) Probes Within ± 2 RE of each other & within NAS & within ± 2 RE for inner, ± 5 RE for outer probes

4day conjunction

Dawn/Dusk Conjunctions (DDC)

Dawn/Dusk conjunctions.


TAIL SIMULATION

30:00: P2_SLOW_SURVEY

18:00: P2_FAST_SURVEY

34:00: 100% COMPRESSED

Orbit Period : 48 hoursFast Survey : 12 hoursCompression: 4 hours

42:00: PASS

00:00

TAIL SEASON (PRIMARY SCIENCE)

01:00 MAG_CAL_OFF

47:00 MAG_CAL_ON


CRUISE DAYSIDE SIM

24:00: 100% COMPRESSED

Orbit Period : 28 hoursFast Survey : 12 hoursCompression: 4 hours

00:00

DAY SEASON (SECONDARY / LEO ORBIT)

1:10: ECLIPSE EXIT

2:00: SOLAR WIND ENTRY

26:00: SOLAR WIND EXIT

01:00 MAG CAL OFF

27:00 MAG CAL ON

1:00: ECLIPSE ENTRY

20:00: P345_SLOW_SURVEY

8:00: P345_FAST_SURVEY

26:00: PASS


MPT ObjectivesObjectives1. SIMULATE THE FOLLOWING ORBITS

P1 Orbit Period 96 hrs P2 Orbit Period 48 hrs P345 Orbit Period 24 hrs

2. VERIFY TELEMETRY STORAGE Verify Engineering/Survey/Burst Data Rates .v. Data_Rates version G.7.2 Verify Proper Packet Routing

3. VERIFY COMPRESSION Measure Processor Compression Time (<4 hrs) Verify Compression Ratio > 2.0

4. VERIFY PLAYBACK Test Playback Sequence Verify All Engineering and Survey Data is played out Verify Amount of Burst Playback

5. RUN STORED COMMAND SEQUENCES Eclipse Entry / Exit Radiation Belt Entry / Exit Plasma Pause Conjunction Bowshock MAG Ranging


MPT MethodMethod1. MPT.CMD

IDPU RESET IDPU_INIT.CMD – To set Normal Mode, Clear Errors INST_ON.CMD – Power all Instruments, Configure

2. Pn_TAIL_SIM.CMD Loads Script #2,3, or 4 Depending Upon P1,P2 or P345 Simulation Modify the SSR Routing Map Command Instrument Data Rates for this Orbit Period Configure Moment Decimator for this Orbit Period Execute Slow Survey Wait Execute Fast Survey Wait Execute Slow Survey Wait Start PASS.CMD

3. Verification Collection Times (Slow & Fast) are Measured Playback Time is Measured GSE Verifies the TM Format and Compression Formats APID counters are read back from the GSE Enter APID counts in Spreadsheet to Verify Data Rates and Compression Ratio


FGM TM

REM ===========================================================REM MAG_CAL_ON.CMD REM 5/30/06REM ===========================================================

/IDPURAWHEX B101 ;FGE ENABLE/ISCMCAL 60 ;SCM CAL ON FOR 1 MINUTE

REM ===========================================================REM MAG_CAL_ON.CMD REM 5/30/06REM ===========================================================

/IDPURAWHEX B101 ;FGE ENABLE/ISCMCAL 60 ;SCM CAL ON FOR 1 MINUTE

REM ===========================================================REM MAG_CAL_OFF.CMD REM 5/30/06REM ===========================================================

/IDPURAWHEX B100 ;FGE DISABLE

REM ===========================================================REM MAG_CAL_OFF.CMD REM 5/30/06REM ===========================================================

/IDPURAWHEX B100 ;FGE DISABLE

Attitude Control / Calibration Determine Probe Attitude Near Perigee APID 405 ( 8 Hz x 3 Axes) Enabled at Perigee +/- 1 hour

Slow Survey APID 410 X-Y Sine Wave Least Squares Spin Fits & Z-axis AverageFast Survey APID 460 3-Axis 16 bit samples at 4 Samples/SecondParticle Burst APID 461 3-Axis 16 bit samples at 128 Samples/Second


FGM RANGINGMagnetometer Ranging

1. FGM SIGNAL RANGE RANGE = 0 to 8, Sliding 16-bit Window over 24-bit X,Y,Z Samples Range 0 : FFFFFFFFFFFFFFFFxxxxxxxx +/- 25000 nT range Range 3 : xxxFFFFFFFFFFFFFFFFxxxxx +/- 3125 nT range Range 8 : xxxxxxxxFFFFFFFFFFFFFFFF +/- 97 nT range

2. OVER RANGE IMPACTS APID 460/461:

• A saturated waveform in the spin plane is relatively recoverable • A saturated signal in the spin-axis is deadly. No way to tell where it really is.

SPIN FITS: • Not recoverable. We lose virtually everything if the signal goes over range.

3. ON-ORBIT MAG RANGE ADJUSTMENT (ATS) BELOW 6 Re : Use Range 0 (+/- 25000 nT) OUTSIDE 6 Re : Use Range 4 (+/- 1563 nT)


SCM TM

SCM Calibrations Trend Sensor Health each orbit Calibration Mode for 1 Minute

Slow Survey APID 440 Filter Bank at ¼ Hz (Note1)

Fast Survey APID 440 Filter Bank at 4 Hz APID 444 16 bit samples at 8 Samples/Second

Particle Burst APID 448 16 bit samples at 128 Samples/Second APID 44D 2 channels 32 freq spectra at 1 spectra/sec (Note1)

Wave Burst APID 44C 16 bit samples at 8192 Samples/Second APID 44E 2 channels 64 freq spectra at 8 spectra/sec (Note1)

1. Different from EFI_INIT


EFI TM

Slow Survey APID 410 X-Y Sine Wave Least Squares Spin Fits & Z-axis Average APID 440 Filter Bank at ¼ Hz (Note1)

Fast Survey APID 440 Filter Bank at 4 Hz APID 441 V1-V6 16-bit samples at 4 Samples/Second APID 443 Ex-z 16-bit samples at 8 Samples/Second

Particle Burst APID 445 V1-V6 16-bit samples at 16 Samples/Second (Note1) APID 447 Ex-z 16-bit samples at 128 Samples/Second APID 44D 2 channels 32 freq spectra at 1 spectra/sec (Note1)

Wave Burst APID 449 V1-V6 16-bit samples at 8192 Samples/Second APID 44B Ex-z 16-bit samples at 8192 Samples/Second APID 44E 2 channels 64 freq spectra at 8 spectra/sec (Note1)

1. Different from EFI_INIT


EFI BIASING

EFI BOOM ELECTRONICS MANAGEMENT

As Plasma Conditions Change, EFI Biases Need to be Modified

Four Tables are Executed from the Flight EEPROM as follows:

COMMAND 14F5 EXECUTES TABLE “B0” - EFI Low Density, Sun COMMAND 14F6 EXECUTES TABLE “B1” - EFI Low Density, Eclipse COMMAND 14F7 EXECUTES TABLE “B2” - EFI High Density, Sun COMMAND 14F8 EXECUTES TABLE “B3” - EFI High Density, Eclipse

Src: thm_efi_beb_tables_revC_.doc


SST TM

Slow Survey APID 452 Engineering 1 packet/hour (30 second accum every 4 minutes) APID 453 Moments every Spin, Decimated in P1 and P2 Orbits (Factor of 8 or 4) APID 45B Ion Reduced Distributions APID 45E Electron Reduced Distributions

Fast Survey APID 452 Engineering 1 packet/hour (30 second accum every 4 minutes) APID 45B Ion Reduced Distributions Disabled APID 45E Electron Reduced Distributions Disabled APID 45A Ion Full Distributions Enabled APID 45D Electron Full Distributions Enabled

Particle Burst APID 45F Electron Full Distribution Burst

Wave Burst Not Applicable

Note1: APID 45C Ion Full Distributions BURST Always Disabled


ESA TM

Slow Survey APID 453 Moments every Spin Decimated in P1 and P2 Orbits (Factor of 8 or 4, respectively) APID 455 Ion Reduced Distributions APID 458 Electron Reduced Distributions

Fast Survey APID 455 Ion Reduced Distributions Disabled APID 458 Electron Reduced Distributions Disabled APID 454 Ion Full Distributions Enabled APID 457 Electron Full Distributions Enabled

Particle Burst APID 456 Ion Full Distribution Burst APID 459 Electron Full Distribution Burst

Wave Burst Not Applicable


ECLIPSE

REM ===========================================================REM ECLIPSE_ENTRY.CMD REM 9/14/06REM ===========================================================

/IDPURAWHEX 1283 ;EFI -- ECLIPSE, LOW DENSITY CONFIGURATION ;

REM ===========================================================REM ECLIPSE_ENTRY.CMD REM 9/14/06REM ===========================================================

/IDPURAWHEX 1283 ;EFI -- ECLIPSE, LOW DENSITY CONFIGURATION ;

REM ===========================================================REM ECLIPSE_EXIT.CMD REM 9/14/06REM ===========================================================

/IDPURAWHEX 1282 ;EFI -- SUN, LOW DENSITY CONFIGURATION

REM ===========================================================REM ECLIPSE_EXIT.CMD REM 9/14/06REM ===========================================================

/IDPURAWHEX 1282 ;EFI -- SUN, LOW DENSITY CONFIGURATION


SOLAR WIND

REM ===========================================================REM SOLAR_WIND_ENTRY.CMD REM 5/30/06REM ===========================================================

/IDPURAWHEX 14F5 ;EFI -- SUN, HIGH DENSITY CONFIGURATION/IEFICONF F5 ;

/IDPURAWHEX 6600 ;ETC -- SOLAR WIND MODE

REM ===========================================================REM SOLAR_WIND_ENTRY.CMD REM 5/30/06REM ===========================================================

/IDPURAWHEX 14F5 ;EFI -- SUN, HIGH DENSITY CONFIGURATION/IEFICONF F5 ;

/IDPURAWHEX 6600 ;ETC -- SOLAR WIND MODE

REM ===========================================================REM SOLAR_WIND_EXIT.CMD REM 5/30/06REM ===========================================================

/IDPURAWHEX 14F6 ;EFI -- SUN, LOW DENSITY CONFIGURATION/IEFICONF F6 ;

/IDPURAWHEX 6600 ;ETC -- MAGNETOSPHERE MODE

REM ===========================================================REM SOLAR_WIND_EXIT.CMD REM 5/30/06REM ===========================================================

/IDPURAWHEX 14F6 ;EFI -- SUN, LOW DENSITY CONFIGURATION/IEFICONF F6 ;

/IDPURAWHEX 6600 ;ETC -- MAGNETOSPHERE MODE


RADIATION BELT

REM ===========================================================REM RAD_BELT_ENTRY.CMD REM 5/30/06REM ===========================================================

/IDPURAWHEX 1251 ;SST FORCED SHUT AND DISABLED

REM ===========================================================REM RAD_BELT_ENTRY.CMD REM 5/30/06REM ===========================================================

/IDPURAWHEX 1251 ;SST FORCED SHUT AND DISABLED

REM ===========================================================REM RAD_BELT_EXIT.CMD REM 5/30/06REM ===========================================================

/IDPURAWHEX 1250 ;SST ON AUTOMATIC W/NEW ALLOCATION

REM ===========================================================REM RAD_BELT_EXIT.CMD REM 5/30/06REM ===========================================================

/IDPURAWHEX 1250 ;SST ON AUTOMATIC W/NEW ALLOCATION


TEST RESULTS

GENERAL NOTES

MPT Form : White background on Measured Packet Counts means <10% variance from “Expected” column. Yellow means over 10% variance.

Accelerated tests had issues with very slow packets

Telemetry Segment Packet Minimums interfered with packet counts since we could not read all the packets out of memory (some were still being worked on).

The durations of PB and WB were difficult to verify through this method. Memory capacity drives the amount collected. Estimated time is entered by the test director to check consistency between the PB and WB APIDs.

The Actual Playback time (in seconds) to empty the memory is needed for the test to get all the data out of the SSR. Normally, only half the SSR will be played out.

APID 451 Trigger Rate changed to ½ Hz (was 1 Hz) in last P345 test

APID 452 SST Engineering Data to be 1 packet/Hour (was disabled) in last P345 test


P1 TAIL RESULTS

Measure Packet Counts match to within 10% of expectation (white background). Yellow means >10% variance.

THEMIS MISSION PROFILE TEST UNIT FM6 ORBIT P1START 9/13/06 11:14 AM SlowSvy: 3.23 hrs SSpins: 3880 PB: 3726

FS 9/13/06 12:15 PM FastSvy: 1.05 hrs FSpins: 1260 WB: 273SS 9/13/06 1:18 PM Total 4.28 hrs Total: 5140

PASS 9/13/06 3:17 PMEND 9/13/06 3:31 PM Play: 840 secs

TMCode 6 TM Rate: 281.6 kbps Pkts: 20613 CompReqmt 750 Mb Raw, 375 Mb Comp'd TM Vol: 225.6 Mbits Raw: 473.3 Mbits 2.10

APID Description EXPECT EN QL SS FS PB WB

410 IDPU SPIN FIT PACKET (EFI & FGM) 31 30

440 DIGITAL FIELDS BOARD FILTERS 70 66

441 DIGITAL FIELDS BOARD Fast Survey (A) V1-V6118 126

442 DIGITAL FIELDS BOARD Fast Survey (B) V1-V60

443 DIGITAL FIELDS BOARD Fast Survey E12DC, E34DC, E56DC at 2 to 256 Hz59 62

444 DIGITAL FIELDS BOARD Fast Survey SCM1, SCM2, SCM3 at 2 to 256 Hz59 62

445 DIGITAL FIELDS BOARD Particle Burst (A) V1-V6 at 2 to 256 Hz233 233

446 DIGITAL FIELDS BOARD Particle Burst (B) V1-V6 at 2 to 256 Hz0

447 DIGITAL FIELDS BOARD Particle Burst E12DC, E34DC, E56DC at 2 to 256 Hz932 930

448 DIGITAL FIELDS BOARD Particle Burst SCM1, SCM2, SCM3 at 2 to 256 Hz932 932

449 DIGITAL FIELDS BOARD Wave Burst (A) V1-V6 at 512 to 8192 Hz8736 8352

44A DIGITAL FIELDS BOARD Wave Burst (B) V1-V6 at 512 to 8192 Hz0

44B DIGITAL FIELDS BOARD Wave Burst E12DC, E34DC, E56DC at 512 to 16384 Hz0

44C DIGITAL FIELDS BOARD Wave Burst SCM1, SCM2, SCM3 at 512 to 16384 Hz4368 4174

44D DIGITAL FIELDS BOARD Particle Burst Spectra 1 to 4 16-64 pts @1/4-8 Hz233 232

44E DIGITAL FIELDS BOARD Wave Burst Spectra 1 to 4 16-64 pts @1/4-8 Hz273 273


P1 TAIL RESULTS

44F spare

450 spare

451 Trigger Data 0 8

452 SST Engineering Data 0

453 ESA and SST Moments [212 bytes/spin x 16 spins]321 319

454 iESA_FDF Survey Ion 88x32 Angle*Energies 39 38

455 iESA_RDF Survey Ion 6x16 Angle*Energies 425 410

456 iESA_FDF Burst Ion 88x32 Angle*Energies 1242 1240

457 eESA_FDF Survey Electron 88x32 Angle*Energies39 38

458 eESA_RDF Survey Electron 6x16 Angle*Energies15 13

459 eESA_FDF Burst Electron 88x32 Angle*Energies1242 1238

45A iSST_FDF Survey Ion 64x16 Angle*Energies 420 409

45B iSST_RDF Survey Ion 6x8 Angle*Energies 3 1

45C iSST_FDF Burst Ion 64x16 Angle*Energies 0

45D eSST_FDF Survey Electron 64x16 Angle*Energies13 13

45E eSST_RDF Survey Electron 6x8 Angle*Energies42 39

45F eSST_FDF Burst Electron 64x16 Angle*Energies414 412

460 FGM LOW RATE DATA (TML) 30 31

461 FGM HIGH RATE DATA (TMH) 932 932Expected in Eng/QL/Survey 1684 38 0 1346 281 6149 12799

Actual 1665 38 0

Slowest Packet 21.1% 0.1% 11.0% 3.8% 2.1%Packet minimum Value 4.8 1346.0 9.1 26.5 46.9Hours of accumulation 3.2 3.2 3.2 1.1

Packets/Hour 12 0 416 268

COUNT SEARCH COLLECT EXPECT ACTUAL ACTUALPBURST 8 1 2 24 24.0

WBURST 4 1 1 50 50.0

1627 18948


P2 TAIL RESULTS

THEMIS MISSION PROFILE TEST UNIT FM6 ORBIT P2START 9/11/06 5:13 PM SlowSvy: 12.27 hrs SSpins: 14720 PB: 3570


PASS 9/12/06 9:16 AMEND 9/12/06 9:30 AM Play: 840 secs



















44F spare


P2 TAIL RESULTS

450 spare

451 Trigger Data 0

452 SST Engineering Data 0


454 iESA_FDF Survey Ion 88x32 Angle*Energies151 151






45A iSST_FDF Survey Ion 64x16 Angle*Energies1645 1647





45F eSST_FDF Burst Electron 64x16 Angle*Energies396.7 413



Actual 6805 115 0




WBURST 4 1 1 50 50.0

6690 18952


P345 TAIL RESULTS

THEMIS MISSION PROFILE TEST UNIT FM6 ORBIT P345START 9/14/06 11:05 AM SlowSvy: 3.45 hrs SSpins: 4140 PB: 3700


PASS 9/14/06 3:23 PMEND 9/14/06 3:35 PM Play: 676 secs



















44F spare


P345 TAIL RESULTS

450 spare

451 Trigger Data 4 4

452 SST Engineering Data 4 5


454 iESA_FDF Survey Ion 88x32 Angle*Energies 72 67






45A iSST_FDF Survey Ion 64x16 Angle*Energies 442 429





45F eSST_FDF Burst Electron 64x16 Angle*Energies411 413



Actual 1976 41 0




WBURST 4 1 1 50 50.0

1935 18944


CONCLUSION

CONCLUSIONS1. INSTRUMENT CONTROLS

Orbit Configurations are Complete and Tested All Instrument Scripts Tested Script Collections #0002 thru #0004 are Flight Ready

2. TELEMETRY STORAGE Survey Collection and Storage Operating per Specification Burst Collection of 92 MB Understood.

3. COMPRESSION Processor Compresses in much less than 4 hours Even While Spin-Fitting Compression Ratios Between 2.1 and 2.6

4. TELEMETRY PLAYBACK Playback Sequence Tested All Engineering and Survey Data is played out Full Burst Playback Pushes Downlink past 375 Mb Allocation (30 min downlink) Required Burst Playback (<17 MB) plays “best” 2-3 Bursts out of 8

5. SPACECRAFT MEMORY APID 405 (FGM 8 Hz) for 2 Hours/Orbit will Generate 0.439 MB Needs to be accounted on the BAU memory ledger.

THEMIS IDPU FSW 11/29/2015 1 UCB THEMIS IDPU FSW V4 Mission Profile Tests Peter Harvey Michael...

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Transcript of THEMIS IDPU FSW 11/29/2015 1 UCB THEMIS IDPU FSW V4 Mission Profile Tests Peter Harvey Michael...