Subject: Administrative: NOAA-15 Gyroless Baseline On-Orbit Test on This is a multi-part message in MIME format. --Boundary_(ID_sKcgHqm+9xk5wFQQ95fXjg) Content-type: text/plain; charset=ISO-8859-1; format=flowed Content-transfer-encoding: 8BIT *Topic:*NOAA-15 Gyroless Baseline On-Orbit Test *Date/Time(UTC) Message Issued:*January 17, 2012, 20:50:00 UTC *Satellite(s) Involved:*NOAA-15 *Instrument(s) Involved:*All Instruments *Product(s) Involved/Affected:*All data and products from NOAA-15 *Date/Time(UTC) of Initial Implementation: *January 24, 2012, 13:50:20 UTC *Date/Time(UTC) of Expected End: *January 25, 2012, 21:29:00 UTC *Length of Outage:*31.65 hours *Details/Specifics of Change:* From 24 January 2012 (JDAY 024) at 13:50:20 UTC (orbit 71226) to 25 January 2012 (JDAY 025) at 21:29:00 UTC (orbit 71245), NOAA-15 will be placed into the Reduced GYRO (RGYRO) and Gyroless Mode for an on-orbit test of the enhanced RGYRO and Gyroless software.The test consists of three parts: (a) about two orbits of RGYRO testing due to a software location change, (b) about 27-hours of gyroless testing, and (c) a recovery with 1 orbit to verify that the spacecraft is back in YGC ACS control and performing as expected in reduced gyro estimated x. The short orbit recovery time comes about since no further ACS control modes are necessary to be evaluated by Engineering because NOAA-15 is presently flying with only 2 gyro axes (roll and pitch) with nominal yaw errors of less than ± 1 degrees (ground truth measurements). During the test period, NOAA-15 instrument L1b data will not be distributed due to the uncertainty in geo-location errors (these are expected to be in the 1 to 2 degree range). This is another in a series of tests on the TIROS spacecraft as the enhanced software for rgyro and gyroless become available for each of the TIROS spacecraft. *Contact Person(s) Name/Email/Phone Number for Questions:* ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880 Carl Gliniak at carl.gliniak@noaa.gov at 301-817-4207 Dejiang Han at dejiang.han@noaa.gov at 301-817-4119 ** *Web Site(s) for applicable information:*N/A *Contact Information for Further Information: * ESPC Operations at ESPCOperations@noaa.gov and 301-817-3880*. **Web Site(s) for applicable information:*N/A This message was sent by ESPC.Notification@noaa.gov. You have been sent this and other notifications because you have opted in to receive it. If for any reason, you wish to unsubscribe, please contact ESPC Help Desk at ESPCOperations@noaa.gov or (301) 817-3880. Please note: it make take up to two business days to process your unsubscribe request. --Boundary_(ID_sKcgHqm+9xk5wFQQ95fXjg) Content-type: text/html; charset=ISO-8859-1 Content-transfer-encoding: 7BIT

Topic: NOAA-15 Gyroless Baseline On-Orbit Test

Date/Time(UTC) Message Issued: January 17, 2012, 20:50:00 UTC

Satellite(s) Involved: NOAA-15

Instrument(s) Involved: All Instruments

Product(s) Involved/Affected: All data and products from NOAA-15

Date/Time(UTC) of Initial Implementation: January 24, 2012, 13:50:20 UTC


Date/Time(UTC) of Expected End: January 25, 2012, 21:29:00 UTC


Length of Outage: 31.65 hours


Details/Specifics of Change:
From 24 January 2012 (JDAY 024) at 13:50:20 UTC (orbit 71226) to 25 January 2012 (JDAY 025) at 21:29:00 UTC (orbit 71245), NOAA-15 will be placed into the Reduced GYRO (RGYRO) and Gyroless Mode for an on-orbit test of the enhanced RGYRO and Gyroless software.  The test consists of three parts: (a) about two orbits of RGYRO testing due to a software location change, (b) about 27-hours of gyroless testing, and (c) a recovery with 1 orbit to verify that the spacecraft is back in YGC ACS control and performing as expected in reduced gyro estimated x. The short orbit recovery time comes about since no further ACS control modes are necessary to be evaluated by Engineering because NOAA-15 is presently flying with only 2 gyro axes (roll and pitch) with nominal yaw errors of less than ± 1 degrees (ground truth measurements). During the test period, NOAA-15 instrument L1b data will not be distributed due to the uncertainty in geo-location errors (these are expected to be in the 1 to 2 degree range). This is another in a series of tests on the TIROS spacecraft as the enhanced software for rgyro and gyroless become available for each of the TIROS spacecraft.

Contact Person(s) Name/Email/Phone Number for Questions:
ESPC Operations at ESPCOperations@noaa.gov at 301-817-3880
Carl Gliniak at carl.gliniak@noaa.gov at 301-817-4207
Dejiang Han at dejiang.han@noaa.gov at 301-817-4119



Web Site(s) for applicable information:N/A

Contact Information for Further Information:  ESPC Operations at ESPCOperations@noaa.gov and 301-817-3880.

Web Site(s) for applicable information: N/A

This message was sent by ESPC.Notification@noaa.gov. You have been sent this and other notifications because you have opted in to receive it. If for any reason, you wish to unsubscribe, please contact ESPC Help Desk at ESPCOperations@noaa.gov or (301) 817-3880. Please note: it make take up to two business days to process your unsubscribe request.

 

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