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Landsat- 1 and Landsat-2 Evaluation Report 23 January 1975 to 23 April 1975

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Landsat- 1 and Landsat-2 Evaluation Report 23 January 1975 to 23 April 1975 3 r I S P A C E DOCUMENTATION BRANCH 7 5 :; D S 4 2 2 8 DIVISION CODE 256 ^^ 15 AUGUST 1975 LANDSAT- 1 AND LANDSAT-2 EVALUATION REPORT 23 JANUARY 1975 TO 23 APRIL 1975 Prepared By GE LANDSAT OPERATIONS CONTROL CENTER For NATIONAL AERONAUTICS AND SPACE ADMINISS RATION Goddard Space Flight Center Greenbelt, Maryland 20771 1516177 Ln M U cv '^ ; ,q ry cv in rn 1975 r, 1 ^^ CL .^ ^ rC x! H ry to 1 u C ^ r RECEIVED torA; .0 n U^ G4L^` CYD to U ... m NASA STI FACILiTy u F N ^ ^ INPUT s titi RC ^•+ C 7 "4 U r .y • ^4 ^++! 1 w !+z U cc ^r U CO ' ] Qt a; Z M W ^ CV .b H !-I ID V, tU ka ^} ^^ S r Z Ln 1 C_^ n w 1--I rr U E-4 r 1 .y V} o--4 H Contract NAS5-21808 ^- w cs GENERAL ELECTRIC ZMT""'•. ... "SF^TF F^ r,• Fu,a«r,-"^T+-^^ k '^i._^^^^:a'•A"r::N!w^^r^4.>. Y ... • .., V .. ^^ _..«..ter.. -.......'^ a.-nP'w.saeern^afaa,.w,..^u e,sYMrn^.a ^w-we'.,s.....s .wr—._- ' ^y"1 ,:. .^... ^ i - o, E SPACE DIVISION GEN ER, L o^I E LE C T R I C SPACE SYSTEM'S GENERAL ELECTRIC COMPANY . OR.GAN'IZAT!!C)N z (MAIL: 5030 HERZEL .PLACE. BELTSVILLE, MARYLAND 20705); Phone (301) 346-6.000 October 2.0, 1975 :;. TO: Distribution FROM: D. Wise T,4 ' Errata for Document 75SDS1228, Landsat-.1 and Landsat-4..Eva.lua;ti.on Report, 23 January 1975 to ; 3 April 1975, dated 15 August 1975. Landsa.t-1 Page 4-:1, fifth paragraph, delete "currents".. Text should read, "So lar Array Drive Voltages, Temperatures, and....".. .5. Page 4-5, Table 4 -2, Function 1092, title should read '"RMP2 A1TR Current". Page 15-1, Figure 15-1 vertical scale should read "Dumber of Head-to -Tape Contacts (X103).'? d- Landsat-2 P age. 4-1, fourth paragraph, second sentence, delete "currents". Text should x, read "All motor voltages and temperatures were normal".; Page 11-1, third paragraph, first sentence, should read "....on Landwsat -2 s has ranged between 30 - 35 00 during,..". ^i Page 16-.1, fourthparagraph, first sentence,. should read "In Appendix D a scene...".. Fourthpnza...gra.ph, last sentence should read.-;. "Band 1 (Figure D-1) is...".. Page C-10,, Table 2, Figure 2, obliterated function numbers a-re'13032 and 13033. C" Dia C : ^.. c:.,^ : Q I , r .f f <} One pear 75DS42.2'8 Report Daniel G.. Wise, Supe.'rvisor : Off.-Line Engineering DGW/k€m: Wn NO F C OAL TO MAKE c- nEnAL ELECTM, -^ - Yan BEST [UY a% a N TABLE OF CONTENTS Y. se ction Page INTRODUCTION . vii s 1 SUMMARY - LANDSAT-1 OPERATIONS . 2 ORBITAL PARAMETERS . 2-1 3 POWER SUBSYSTEM n . , . 434 4 ATTITUDE CONTROL SUBSYSTEM . 4-1 y. 5 COMMAND/CLOCK SUBSYSTEM . .. S-1 A ; ^ B TELEMETRY SUBSYSTEM . 6-1 7 ORBIT ADkTUST SUBSYSTEM . 7-1 8 MAGNETIC MOMENT COMPENSATING ASSEMBLY . 8=1 9 UNIFIED S-BAND/PREMODULATION PROCESSOR . 9-1 10 ELECTRICAL INTERFACE SUBSYSTEM . LO'-1 11 THERMAL SUBSYSTEM. 11-1. 12 NARROWrBAND'TAPE RECORDERS . ..12-1 1 # 13 WIDEBAND TELEMETRY SUBSYSTEM . 13-1 14 ATTITUDE MEASUREMENT SENSOR . 14-1 i 151,5 WIDEBAND VIDEO TAPE RECORDERS 4: . 15-1 1'6 RETURN BEAM VIDICON . .. 16-1 r r..^ I! MU`LTISPECTRAL SCANNER SUBSYSTEM 1T-I 18 DATA COLLECTION SUBSYSTEM . 18-1 APPENDIX A - LANDSAT=1 ANOMALY ITT . ..• .. .. A-1 APPENDIX B - LANDSAT-1 SPACECRAFT ORBIT REFERENCE TABLES . B-1 APPENDIX .0 - LANDSAT-4 PIR-U°-1N23.-ERTS-131, BIT :ERROR: 'RISE ON :NBR-2 . .. C-1 TRG PAGE fLliNlC Ndr FIB L5-1 PR iR n. '" .a^e.-v v3 rn .... ..,m__ ._ S3ie'^x nr^. vs,mmn.E.s...a."c^-!i .Mr-4m-.c.kTn_^....rtira. vsay...: err-4S r^H?:kr .he^ers_.c .-..;..iz'ia. .r_^'r..ra.k.-n.er -+:'.ra:-.n .v.tuu^n. d rh.rvr red r .^± a l I I J J I _1-_J I p LIST OF ILLUSTRATIONS F`. Figure Page 2.-1 Typical Subsatellite Plot of the LANDSAT-1 Spacecraft . 2-3 w 2-2 Effects of Orbit Adjust on Ground Track ( LANDSAT-1) .. .2-5 2-3 I ANDSAT-1 Local Sun Time Equator Crossing-Descending Node . 2-7 - - 3-1 LANDSAT-1 Predicted Midday :tolar Current . ... -. 3-2 j 3-2 1A (Midday) Degradation vs.. Days (LANDSAT..:1) . .. 3-3 :V i 3-3 Actual and (Paddle) Sun Angles (LANDSAT-1) . 3 3-4 Predicted Beta Angles . 3-5 ,t 3-8 Seasonal Solar Intensity Variations . .3-7 W € 4!4 LANDSAT-1 Gating Frequency vs. Time . ..4-3 5-1 LANDSAT-1 Spacecraft Clock Drift History . .. .:5-2 i E 5-2 LANDSAT-1 Spacecraft Clock Drift Rate . ... .5-3 6-1 Power Received at Alaska from VHF Transmitter A (0.3 Watts) - LANDSAT -1 .6-2 9-1 USB Power Output History (LANDSAT-1) . 9- 9-2 USB (Link 4) AGG Readings :at Goldstone with 30-Foot . Antennaf . .. .. x k 11-1 LANDSAT- 1 Sensory Ring Thermal Profile . 114 i 134 LANDSAT-1 AGC Readings at .Goldstone with 30-Foot Antenna: Wide . Band; R•:,t Pur Amp-2 (Link. 3) . 13-3 -J ,N 15-1 VMVTR-1 Tape Usage by Footage (LANDSAT-1) . .. 15-1 17-.1 Number of Scenes Taken for U. S. at Each Geographical Location, LANDSAT-1 . 17-3 .17-2 Scenes Taken This Reporting. Period (LANDSAT-1) . .17-5 17-3 1 Quantum vs. Orbit (LANDSAT-1.} . 174 17-4 Quantum vs. Orbit (LANDSAT--4) .` . 17=9 _ _- 17-5 Quantum vs. Orbit (LANDS:AT-1) . .. 17-1I x+ I 17-6 Quantum vs. Orbit (LANDSAT-1) . .- .. .1743 f 17-7 LANDSAT-1 Line Length vs. Orbit . 17-15 ^ ` 18-1 DCS Messagege Receipt :History (LANDSAT-1) . ^f iV . II: ..:... 'F 4: ,-^-<r•:1 '- n^?..+R`,, aua3_r .,^: ;rw.re epr^ra^ • f , x LIST OF TABLES 's Table Page V SN 1-1 LANDSA,T-1 Brouwer Mean Orbital Parameters . 2-2 3-1 LE1NDSi4T-1 Mayor Power Subsystems Parameters . 3-8 ^ ti 3-2 LANDSAT-1 Power Subsystem Analog Telemetry (Average Value for Data Received in NBTR Playback) . .. 3-9 4-1 LANDSAT-1 ACS Temperature and Pressure Telemetry Summary . 4-5 4-2 LANDSAT-1 ACS Voltages and Currents . 4-5 4-3 LANDSAT-1 ACS Attitude Errors and Driver Duty Cycles , . .. ... 4-6 g 5-:1 Command Clock Telemetry Summary . 5-4 6-1 TLNI Telemetry Summary . , . .. ... 7-1 LANDSAT--1 Orbit Adjust Summary . .; . 7-2 7-2 LANDSAT-1 OAS Telemetry Values . • • • . r 7-3 8-1 MMCA Telemetry Summary (LANDSAT-1) . 8-1 9-1 LANDSAT-1 II$P/PMP Telemetry Values . 9-2 10-1 LAND5AT-1 APU Telemetry Functions . .10-1 b 11-1 LANDSAT-1 Thermal Subsystem Analog Telemetry (Average Value of Frames for Data Received in NBTR Playback) . 114 ? 11-2 LANDSATCompensation-1. Load History,: . .. .11-4 X•2-1 NBR Operating Hours by Modes (LANDSAT-1) . 12-1 324 Narrowband Tape Recorder Telemetry Values .: 124 12-3 LANDSAT- L Narrowband Recorder Subsystem Performance . , .. 124 13-1 Wideband Modulator Telemetry 'Values, LAI3DSAT-1, .. 136-2 5y 14-1 LANDSAT-1 AMS Temperature Telemetry . .. 144 15-1 WBVTR Telemetry Values (LAND5AT-1) . 15-2 15-2, WBVTR-^1 Function Values by -Made in Orbit (1ANDSAT-.1) . ....... .. .. .::. .. I5^-3 16-1 R'BV Telemetry, Values (LANDSAT-1) .. 16-1 17-1 LANDSAT-1 MSS: Telemetry Values ^r 17=2 LANDSAT -1 Sun Calibration Orbits . .. .. ... , . 17 17 17-3 LANDSAT-1-MSS:Operation Orbits in High Gain Mode, Mux Compressed- , .: 17-17 18-1 DCS :Telemetry Values . .... 18.-1 18-2 D.CS Qualitative Performance {LANDSAT .1} LS.-1 v/vi a>. 7_ u INTRODUCTION This is the tenth report in a continuing series of documents issued quarterly to presed flight perforce analysis of the LANDSAT-1 Spacecraft. Previously issued documents are: 72SD4256 ERTS-1 Launch and Flight Activation 18 October 1972 Evaluation Report 23 to 26 July 1972 728DI262 ERTS-1 Flight Evaluation Report 28 November 1972 23 July 1972 to 23 October 1972 zt.. 72SD4224: ERTS-1 Flight Evaluation Report .27 February 19.73 23 October 1972 to :23 January 1973 73SDI249 ERT0-1 Flight Evaluation Report 29 May 1973 23 January 1973 to 23 April 1973 7304260 ERTS-1 Flight Evaluation Report 10 August 1973 23 April 1973 to 23 July 1973 73SD4274 ERTS-1 Flight Evaluation Report 28 November 1973 F: 23 July 1973 to October .1973 w 74SD4265 ER TS-1 Flight Evahia`ion Report 26 February 1974 23 October 1.973 to 23 January 1974. 74SD4217 ERTS-1 Flight Evaluation Report 18 May 1974 23 January 1,974. to 23 April 197.4 cz: 74SD4236 ERTS 1 Flight Evaluation Report 15 August 1,974 23 April 1974 to 23 July 1974 74SD4256 ERTS-1 Flight Evaluation Report 31 December 1974 t- 23 July 1974 to 23 October 1974 76SD4222. LANDSAT-1 Flight Evaluation Report 30 April 1975 23 October 1975 to 23 January 1975 P This report contains analyses of performance for orbits 12476 to 14000 for L• ANDSAT-1. M > LSFi vii/viii SECTION 1 SUMMARY LANDSAT-1 OPERATIONS The LANDRAT-1 spacecraft was launched from the Western Test Range an 23 July 1972 at 16408:06. 506 orbital The launch and injection phase of the space flight were nominal and deployment of the apacecraft followed predictions. Orbital operations of the spacecraft and payload subsystems were satisfactory through Orbit .147 after which,an Internal short circuit disabled one of the Wideband Video Tape Recorders (WBVTR-2).
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