[Isocops] IBEX Goat Herder 24 Mar 11
Ibex Mission Operations
ibexops at gmail.com
Thu Mar 24 11:11:19 EDT 2011
IBEX Goat Herder Orbit# 117 (13 Mar - 23 Mar 11)
Successful Sun Precession Maneuver for Orbit# 117
2 out of 5 failed USN contacts this Orbit
1. USN/HAW01 20 Mar 11 @ 1700 UTC Late AOS
Late AOS due to 7 degree antenna masking
USN/PR#9993
RAZOR# 449
2. USN/HAW01 21 Mar 11 @ 1710 UTC Intermittent Data
Unable to maintain data lock
USN/PR# 1000
RAZOR# 450
--
Sheral R. Wesley
SPVR., Satellite Operations
IBEX Mission OPS
(304) 279-6678
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IBEX Goat Herder Orbit# 117 (13 Mar - 23 Mar 11)
Successful Sun Precession Maneuver for Orbit# 117
2 out of 5 failed USN contacts this Orbit
1. USN/HAW01 20 Mar 11 @ 1700 UTC Late AOS
Late AOS due to 7 degree antenna masking
USN/PR#9993
RAZOR# 449
2. USN/HAW01 21 Mar 11 @ 1710 UTC Intermittent Data
Unable to maintain data lock
USN/PR# 1000
RAZOR# 450
Date
Sunday, March 20, 2011
Jday Time Station Controller CAR1 CAR2 CAR3 Razor USNPR Radius S-Band Rate
079 0530 USAK SWesley 449 14 desc 2ksps
VC 0 VC 0 Seq Err VC 1 VC 1 Seq VC 2 VC 2 Seq Err PASS/FAIL
386 64 878 295 Pass
VC 2 Write Pointer 0 VC 2 Write Pointer End 0
VC 2 Read Pointer 0 VC 2 Read Pointer 0
CAR 449 Upload orbit #119 ATS
IBEX_2011_086_00_00_v001.scr (242 - 352)
@2K eb/no = 18.93 - 21.82
@40 k eb/no = 5.08 - 7.91
@64k eb/no 4.62 - 6.14
@160 eb/no no lock
Commanded D/L to 64k dumped backorbit data
Date
Sunday, March 20, 2011
Jday Time Station Controller CAR1 CAR2 CAR3 Razor USNPR Radius S-Band Rate
079 1700 USHI01 SWesley 449 9993 6 asc 160ksps
VC 0 VC 0 Seq Err VC 1 VC 1 Seq VC 2 VC 2 Seq Err PASS/FAIL
1414 3 17647 0 Fail
VC 2 Write Pointer 0 VC 2 Write Pointer End 0
VC 2 Read Pointer 0 VC 2 Read Pointer 0
Late acq due to antenna masking. AOS @7 deg intermittant data. USN repointed the antenna to acquire.
EB/No 9.5 - 10.5
Eb/No 12.35 - 11.16
Eb/No 11.45 - 9.45
SSR Dump
Date
Monday, March 21, 2011
Jday Time Station Controller CAR1 CAR2 CAR3 Razor USNPR Radius S-Band Rate
080 1710 USHI01 TPerry 450 10000 29 asc 2ksps
VC 0 VC 0 Seq Err VC 1 VC 1 Seq VC 2 VC 2 Seq Err PASS/FAIL
64 31 Fail
VC 2 Write Pointer 0 VC 2 Write Pointer End 33436
VC 2 Read Pointer 0 VC 2 Read Pointer 30594
Support Failed due to failure to lock on data.
EB/NO: 2 - 14 @1710
EB/NO: 1 - 17 @1715
EB/NO: 1 - 12 @1732
Sun precession maneuver was nominal.
CSS Angle TLM 3.844
CSS Sun-Pointing Angle 7.688
3/20/2011 18:01
CSS Angle TLM 1.17
CSS Sun-Pointing Angle 2.34
3/21/2011 19:22
Pre-Burn
Thruster 1 23152 3/20/2011 18:01
Thruster 2 22880
Thruster 3 23808
Thruster 4 24080
Post-Burn 3/21/2011 19:22
Thruster 1 23536
Thruster 2 23232
Thruster 3 24160
Thruster 4 24464
Number of Pulses
Thruster 1 384
Thruster 2 352
Thruster 3 352
Thruster 4 384
Thruster Pairs
Thruster 1 & 2 736
Thruster 3 & 4 736
Date
Wednesday, March 23,
Jday Time Station Controller CAR1 CAR2 CAR3 Razor USNPR Radius S-Band Rate
082 1455 USHI01 SWesley 377 40 asc 2ksps
VC 0 VC 0 Seq Err VC 1 VC 1 Seq VC 2 VC 2 Seq Err PASS/FAIL
216 2 Pass
VC 2 Write Pointer 38189 VC 2 Write Pointer End 38252
VC 2 Read Pointer 30594 VC 2 Read Pointer 30594
IBEX Orbit# 117 Sun Precession Maneuver/Star Tracker contact
1. CAR# 377 1. at ACT_SetStaticzRate (estimator,0.418)
@FMISetDownlink (40ksps)
@FMI_SetDownlink (2ksps)
Start Tracker 93% - 98% valid during the contact
@1454 ebno=11.98 - 15.54 dbm (2ksps)
@1521 ebno=11.83 - 16.02 dbm (2ksps)
@1522 ebno= No Lock (40ksps)
IBEX Orbit # 117 J2000 Target Vectors 23 Mar 11 @15:39:46 UTC
J2000 Spin Axis
ECI X =0.999627
ECI Y= -0.026303
ECI Z=0.007289
0.68086000=ActNor.EstInrToBdy[0]
0.18106800=ActNor.EstInrToBdy[1]
0.68080600=ActNor.EstInrToBdy[2]
0.20037000=ActNor.EstInrToBdy[3]
984930000.000=ActNor.EstTime
IBEX Spin Zxis (+Z S/C)
Right Ascension - RA=358.493 deg
Declination - DEC=0.418 deg
IBEX Spin Axis vs. Sun Vector
IBEX Sun Angle=-3.989 deg
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