[Isocops] IBEX Goat Herder 11 Sept 10
Ibex Mission Operations
ibexops at gmail.com
Sun Sep 12 21:12:46 EDT 2010
Guys,
The SSR_Dump contact on 10 Sept 10 @ 2200 UTC was successful for
command/telemetry and doppler
The Tracking contact on 11 Sept 10 @ 0800 UTC failed for excessive VC1
errors, intermittent command/telemetry and bad doppler
*USN/PR# 9015 RAZOR# 433
*
Upcoming Orbit# 93 Contacts are listed below in UTC
IBEX,USHI01,ADD,09/14/10,257,11:00:00,09/14/10,257,11:35:00,,LAHO 2K IBEX
Orbit# 93 Apogee Contact
IBEX,USAK01,ADD,09/18/10,261,07:00:00,09/18/10,261,07:35:00,,LAHO 320K IBEX
Orbit# 93 SSR_Dump/Tracking Contact
IBEX,AUWA01,ADD,09/18/10,261,18:00:00,09/18/10,261,18:35:00,,LAHO 320K IBEX
Orbit#93 SSR_Dump/Tracking Contact
--
Sheral R. Wesley
SPVR., Satellite Operations
IBEX Mission OPS
(304) 279-6678
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IBEX Goat Herder 11 Sept 10
The SSR_Dump contact on 10 Sept 10 @ 2200 UTC was successful for command/telemetry and doppler
The Tracking contact on 11 Sept 10 @ 0800 UTC failed for excessive VC1 errors, intermittent command/telemetry and bad doppler
USN/PR# 9015 RAZOR# 433
IBEX Target Vectors 11 Sept 10
J2000 Spin Axis
ECI X=-0.980104
ECI Y=0.177867
ECI Z=0.088091
0.03315840=ActNor.EstInrToBdy[0]
-0.67442900=ActNor.EstInrToBdy[1]
-0.16718500=ActNor.EstInrToBdy[2]
0.71839700=ActNor.EstInrToBdy[3]
968229000.000 ActNor.EstTime
Precession Maneuver
MPS Diff=0.600 deg
*MPS Diff should be < 1.5*
IBEX Spin Zxis (+Z S/C)
Right Ascension - RA=169.714 deg
Declination - DEC=5.054 deg
IBEX Spin Axis vs. Sun Vector
IBEX Sun Angle=0.582 deg
IBEX Orbit# 92 ATS Target Vectors
MPS Cmd Vector X=-0.980911310
MPS Cmd Vector Y=0.178273687
MPS Cmd Vector Z=0.077662680
Upcoming Orbit# 93 Contacts are listed below in UTC
IBEX,USHI01,ADD,09/14/10,257,11:00:00,09/14/10,257,11:35:00,,LAHO 2K IBEX Orbit# 93 Apogee Contact
IBEX,USAK01,ADD,09/18/10,261,07:00:00,09/18/10,261,07:35:00,,LAHO 320K IBEX Orbit# 93 SSR_Dump/Tracking Contact
IBEX,AUWA01,ADD,09/18/10,261,18:00:00,09/18/10,261,18:35:00,,LAHO 320K IBEX Orbit#93 SSR_Dump/Tracking Contact
Date
Friday, September 10, 2010
Jday Time Station Controller CAR1 CAR2 CAR3 Razor# USNPR# Radius Earth S-Band Rate
253 2200 USAK TPerry 9desc 320ksps
VC 0 VC 0 Seq Err VC 1 VC 1 Seq Err VC 2 VC 2 Seq Err PASS/FAIL
1109 0 18875 1 Pass
VC 2 Write Pointer Start 0 VC 2 Write Pointer End 63346
VC 2 Read Pointer Start 0 VC 2 Read Pointer End 63346
SSR dump
EB/NO 3.82 - 5.1 Aos
EB/NO 5.06 - 6.1 Post Maneuver
Autotrack from 22:29:30 - 22:38:00
ACS tlm read cmds 2X
Date
Saturday, September 11, 2010
Jday Time Station Controller CAR1 CAR2 CAR3 Razor# USNPR# Radius Earth S-Band Rate
254 0800 AUWA SWesley 433 9015 9 asc 320ksps
VC 0 VC 0 Seq Err VC 1 VC 1 Seq Err VC 2 VC 2 Seq Err PASS/FAIL
907 37 1045 275 0 0 Fail
VC 2 Write Pointer Start 64489 VC 2 Write Pointer End 64545
VC 2 Read Pointer Start 63346 VC 2 Read Pointer End 63346
Orbit# 92 Tracking contact
At AOS, USN notified IBEX moc that frame sync lock was weak.
I then changed the downlink rate to 64K and the problem continued. The ground station was re configured and the issue remained.
The FC was dumped with excessive errors. VC1= 1045/275
@0800 ebno=8.94 - 9.57 dbm (320ksps
@0802 ebno=13.89 dbm (64ksps)
@0809 ebno=10.0 - 20.0 dbm (64ksps)
@0833 ebno=12.67 - 13.4 dbm (64ksps)
IBEX Target Vectors 11 Sept 10
J2000 Spin Axis
ECI X=-0.980104
ECI Y=0.177867
ECI Z=0.088091
0.03315840=ActNor.EstInrToBdy[0]
-0.67442900=ActNor.EstInrToBdy[1]
-0.16718500=ActNor.EstInrToBdy[2]
0.71839700=ActNor.EstInrToBdy[3]
968229000.000 ActNor.EstTime
Precession Maneuver
MPS Diff=0.600 deg
*MPS Diff should be < 1.5*
IBEX Spin Zxis (+Z S/C)
Right Ascension - RA=169.714 deg
Declination - DEC=5.054 deg
IBEX Spin Axis vs. Sun Vector
IBEX Sun Angle=0.582 deg
IBEX Orbit# 92 ATS Target Vectors
MPS Cmd Vector X=-0.980911310
MPS Cmd Vector Y=0.178273687
MPS Cmd Vector Z=0.077662680
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