M01 Solar Array Orientation CK File for Extended, 2008-04 ... 2008-06 =========================================================================== Created by Boris Semenov, NAIF/JPL, Tue Aug 26 13:29:30 PDT 2008 Orientation Data in the File -------------------------------------------------------- This file contains orientation and angular rate data for the Mars'01 Odyssey (M01) Solar Array (SA) Inner and Outer gimbal frames. The orientation of the 'M01_SA_INNER_GIMBAL' is given with respect to the 'M01_SPACECRAFT' frame; orientation of the 'M01_SA_OUTER_GIMBAL' is given with respect to the 'M01_SA_INNER_GIMBAL' frame. The NAIF IDs for the 'M01_SA_INNER_GIMBAL' and 'M01_SA_OUTER_GIMBAL' frames are -53311 and -53312. Status -------------------------------------------------------- This file was created by NAIF for archiving with the Planetary Data System (PDS) from daily CK files produced by NAIF, JPL. Pedigree -------------------------------------------------------- The original CK files used to create this file were officially delivered to the M01 project by the NAIF Team. These files contained the inner gimbal frame orientation with respect to the spacecraft frame and the outer gimbal frame orientation with respect to the inner gimbal frame. The orientation was computed on the ground from the solar array gimbal angles extracted from the channelized telemetry sent down by the spacecraft. The individual daily CK files were merged together to provide coverage for a complete or a portion of a particular phase of the mission. A table containing the complete list of original CK files from which data were included in this file is provided at the end of these comments. Approximate Time Coverage -------------------------------------------------------- This file covers the following interval of the Extended phase of the mission: Coverage Begin UTC Coverage End UTC ------------------------ ------------------------ 2008-APR-01 00:01:07.384 2008-JUN-30 23:57:53.579 This file is a type 3 CK file which provides linear interpolation between orientation data points extracted from telemetry. Such interpolation is not applied to the whole coverage of the file but only inside intervals where enough orientation telemetry data was available and orientation data points were close to each other in time for such interpolation to make sense. The nominal gimbal angle time spacing in the telemetry stream varied from one to a few seconds between adjacent data points. Considering that the array gimbal cannot rotate very fast and that the highest accuracy of the SA orientation knowledge is unlikely to be needed in any application, the duration of the longest interval over which the data may be interpolated was set to 300 seconds. For all requests for data falling between two adjacent data points separated by more than 300 seconds the SPICELIB CK readers will return a logical flag stating "POINTING NOT FOUND". A table containing the complete list of valid interpolation intervals in the file segments is provided at the end of these comments. Angular Rate Data Note -------------------------------------------------------- Since M01 s/c engineering telemetry did not contain angular rate data for the gimbal, the angular rates stored in this file were computed from the orientation information. The angular rate for each orientation point was computed as average of two rates -- constant angular rate that would rotate from previous point to that point and constant angular rate that would rotate from that point to the next point. Because angular rates stored in two adjacent points in most cases are not the same, and CK readers linearly interpolate between them, the output angular rates in general will never be constant between any two adjacent data points stored in the file. Usage Note -------------------------------------------------------- In order to use this file an M01 SCLK file containing coefficients mapping M01 on-board time to ET must be loaded into a user's program. Loading an M01 Frames Kernel (FK) containing information that SPICE software need to combine gimbal orientations together will allow a user to get the combined orientation through the high level SPICE Toolkit interfaces. Related Kernels -------------------------------------------------------- This file was created using the following LSK and SCLK files: naif0009.tls ORB1_SCLKSCET.00151.tsc Contacts -------------------------------------------------------- If you have any question regarding this data contact NAIF at JPL: Charles H. Acton, Jr (818)-354-3869 chuck.acton@jpl.nasa.gov Boris V. Semenov (818)-354-8136 boris.semenov@jpl.nasa.gov Appendix 1: List of the original CK files -------------------------------------------------------- m01_sa_2008-04-01.bc m01_sa_2008-04-02.bc m01_sa_2008-04-03.bc m01_sa_2008-04-04.bc m01_sa_2008-04-05.bc m01_sa_2008-04-06.bc m01_sa_2008-04-07.bc m01_sa_2008-04-08.bc m01_sa_2008-04-09.bc m01_sa_2008-04-10.bc m01_sa_2008-04-11.bc m01_sa_2008-04-12.bc m01_sa_2008-04-13.bc m01_sa_2008-04-14.bc m01_sa_2008-04-15.bc m01_sa_2008-04-16.bc m01_sa_2008-04-17.bc m01_sa_2008-04-18.bc m01_sa_2008-04-19.bc m01_sa_2008-04-20.bc m01_sa_2008-04-21.bc m01_sa_2008-04-22.bc m01_sa_2008-04-23.bc m01_sa_2008-04-24.bc m01_sa_2008-04-25.bc m01_sa_2008-04-26.bc m01_sa_2008-04-27.bc m01_sa_2008-04-28.bc m01_sa_2008-04-29.bc m01_sa_2008-04-30.bc m01_sa_2008-05-01.bc m01_sa_2008-05-02.bc m01_sa_2008-05-03.bc m01_sa_2008-05-04.bc m01_sa_2008-05-05.bc m01_sa_2008-05-06.bc m01_sa_2008-05-07.bc m01_sa_2008-05-08.bc m01_sa_2008-05-09.bc m01_sa_2008-05-10.bc m01_sa_2008-05-11.bc m01_sa_2008-05-12.bc m01_sa_2008-05-13.bc m01_sa_2008-05-14.bc m01_sa_2008-05-15.bc m01_sa_2008-05-16.bc m01_sa_2008-05-17.bc m01_sa_2008-05-18.bc m01_sa_2008-05-19.bc m01_sa_2008-05-20.bc m01_sa_2008-05-21.bc m01_sa_2008-05-22.bc m01_sa_2008-05-23.bc m01_sa_2008-05-24.bc m01_sa_2008-05-25.bc m01_sa_2008-05-26.bc m01_sa_2008-05-27.bc m01_sa_2008-05-28.bc m01_sa_2008-05-29.bc m01_sa_2008-05-30.bc m01_sa_2008-05-31.bc m01_sa_2008-06-01.bc m01_sa_2008-06-02.bc m01_sa_2008-06-03.bc m01_sa_2008-06-04.bc m01_sa_2008-06-05.bc m01_sa_2008-06-06.bc m01_sa_2008-06-07.bc m01_sa_2008-06-08.bc m01_sa_2008-06-09.bc m01_sa_2008-06-10.bc m01_sa_2008-06-11.bc m01_sa_2008-06-12.bc m01_sa_2008-06-13.bc m01_sa_2008-06-14.bc m01_sa_2008-06-15.bc m01_sa_2008-06-16.bc m01_sa_2008-06-17.bc m01_sa_2008-06-18.bc m01_sa_2008-06-19.bc m01_sa_2008-06-20.bc m01_sa_2008-06-21.bc m01_sa_2008-06-22.bc m01_sa_2008-06-23.bc m01_sa_2008-06-24.bc m01_sa_2008-06-25.bc m01_sa_2008-06-26.bc m01_sa_2008-06-27.bc m01_sa_2008-06-28.bc m01_sa_2008-06-29.bc m01_sa_2008-06-30.bc Appendix 2: Interpolation Intervals in the File -------------------------------------------------------- The information in this section has been generated by running CKBRIEF utility program using -dump -utc command line options. CKBRIEF -- Version 4.0.0, January 13, 2008 -- Toolkit Version N0062 Summary for: m01_sa_ext15.bc Segment No.: 1 Object: -53311 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2008-APR-01 00:01:07.384 2008-APR-01 12:15:00.237 Y 2008-APR-01 12:25:01.752 2008-APR-07 19:34:22.750 Y 2008-APR-07 19:40:46.745 2008-APR-09 01:39:21.056 Y 2008-APR-09 02:04:45.643 2008-APR-09 16:42:25.113 Y 2008-APR-09 17:05:01.103 2008-APR-09 17:14:25.094 Y 2008-APR-09 17:20:49.089 2008-APR-09 17:26:21.085 Y 2008-APR-09 17:34:53.080 2008-APR-09 19:42:53.003 Y 2008-APR-09 19:53:32.998 2008-APR-09 20:49:52.965 Y 2008-APR-09 20:57:32.960 2008-APR-09 20:59:40.956 Y 2008-APR-09 21:24:00.941 2008-APR-09 21:24:00.941 Y 2008-APR-09 21:29:32.937 2008-APR-09 23:31:08.865 Y 2008-APR-09 23:36:16.868 2008-APR-10 06:32:57.959 Y 2008-APR-10 11:10:52.452 2008-APR-19 11:11:00.672 Y 2008-APR-19 11:19:16.566 2008-APR-19 11:29:56.557 Y 2008-APR-19 11:36:08.951 2008-APR-19 12:12:36.529 Y 2008-APR-19 12:20:56.922 2008-APR-20 01:50:51.830 Y 2008-APR-20 01:57:15.829 2008-APR-21 00:11:31.214 Y 2008-APR-21 00:17:01.315 2008-APR-21 03:28:21.110 Y 2008-APR-21 03:36:53.105 2008-APR-22 23:37:34.476 Y 2008-APR-22 23:45:53.471 2008-APR-23 21:10:26.084 Y 2008-APR-23 21:21:43.278 2008-APR-30 13:39:54.822 Y 2008-APR-30 14:09:46.803 2008-APR-30 14:30:30.191 Y 2008-APR-30 14:36:54.186 2008-APR-30 23:38:48.373 Y 2008-APR-30 23:58:34.445 2008-MAY-07 19:06:12.478 Y 2008-MAY-07 19:19:00.472 2008-MAY-08 10:48:12.808 Y 2008-MAY-08 10:57:39.901 2008-MAY-09 02:45:29.422 Y 2008-MAY-09 02:52:55.476 2008-MAY-09 23:19:11.165 Y 2008-MAY-09 23:26:26.563 2008-MAY-14 06:55:08.589 Y 2008-MAY-14 08:26:05.732 2008-MAY-16 06:45:49.044 Y 2008-MAY-16 06:52:13.036 2008-MAY-20 02:52:43.563 Y 2008-MAY-20 03:22:43.841 2008-MAY-20 05:29:38.761 Y 2008-MAY-20 07:41:13.485 2008-MAY-25 13:48:04.854 Y 2008-MAY-25 13:58:06.849 2008-MAY-25 22:07:16.553 Y 2008-MAY-25 23:03:12.625 2008-JUN-02 10:03:58.096 Y 2008-JUN-02 10:14:27.091 2008-JUN-02 11:36:51.738 Y 2008-JUN-02 11:48:30.030 2008-JUN-02 16:26:10.578 Y 2008-JUN-02 17:44:45.819 2008-JUN-04 06:07:36.017 Y 2008-JUN-04 10:14:33.076 2008-JUN-04 17:19:08.120 Y 2008-JUN-04 17:25:45.259 2008-JUN-06 13:07:57.967 Y Segment No.: 2 Object: -53311 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2008-JUN-06 13:07:57.967 2008-JUN-06 19:51:01.512 Y 2008-JUN-06 20:09:59.299 2008-JUN-08 14:42:54.728 Y 2008-JUN-08 15:30:29.703 2008-JUN-08 15:43:17.694 Y 2008-JUN-08 15:49:41.693 2008-JUN-08 18:00:54.596 Y 2008-JUN-08 18:25:58.582 2008-JUN-09 13:46:36.289 Y 2008-JUN-09 14:22:12.871 2008-JUN-14 10:27:48.093 Y 2008-JUN-14 10:48:20.083 2008-JUN-16 19:27:57.937 Y 2008-JUN-16 19:42:06.326 2008-JUN-28 20:26:43.503 Y 2008-JUN-28 20:33:07.499 2008-JUN-30 23:57:53.579 Y Segment No.: 3 Object: -53312 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2008-APR-01 00:01:07.384 2008-APR-01 12:15:00.237 Y 2008-APR-01 12:25:01.752 2008-APR-07 19:34:22.750 Y 2008-APR-07 19:40:46.745 2008-APR-09 01:39:21.056 Y 2008-APR-09 02:04:45.643 2008-APR-09 16:42:25.113 Y 2008-APR-09 17:05:01.103 2008-APR-09 17:14:25.094 Y 2008-APR-09 17:20:49.089 2008-APR-09 17:26:21.085 Y 2008-APR-09 17:34:53.080 2008-APR-09 19:42:53.003 Y 2008-APR-09 19:53:32.998 2008-APR-09 20:49:52.965 Y 2008-APR-09 20:57:32.960 2008-APR-09 20:59:40.956 Y 2008-APR-09 21:24:00.941 2008-APR-09 21:24:00.941 Y 2008-APR-09 21:29:32.937 2008-APR-09 23:31:08.865 Y 2008-APR-09 23:36:16.868 2008-APR-10 06:32:57.959 Y 2008-APR-10 11:10:52.452 2008-APR-19 11:11:00.672 Y 2008-APR-19 11:19:16.566 2008-APR-19 11:29:56.557 Y 2008-APR-19 11:36:08.951 2008-APR-19 12:12:36.529 Y 2008-APR-19 12:20:56.922 2008-APR-20 01:50:51.830 Y 2008-APR-20 01:57:15.829 2008-APR-21 00:11:31.214 Y 2008-APR-21 00:17:01.315 2008-APR-21 03:28:21.110 Y 2008-APR-21 03:36:53.105 2008-APR-22 23:37:34.476 Y 2008-APR-22 23:45:53.471 2008-APR-23 21:10:26.084 Y 2008-APR-23 21:21:43.278 2008-APR-30 13:39:54.822 Y 2008-APR-30 14:09:46.803 2008-APR-30 14:30:30.191 Y 2008-APR-30 14:36:54.186 2008-APR-30 23:38:48.373 Y 2008-APR-30 23:58:34.445 2008-MAY-07 19:06:12.478 Y 2008-MAY-07 19:19:00.472 2008-MAY-08 10:48:12.808 Y 2008-MAY-08 10:57:39.901 2008-MAY-09 02:45:29.422 Y 2008-MAY-09 02:52:55.476 2008-MAY-09 23:19:11.165 Y 2008-MAY-09 23:26:26.563 2008-MAY-14 06:55:08.589 Y 2008-MAY-14 08:26:05.732 2008-MAY-16 06:45:49.044 Y 2008-MAY-16 06:52:13.036 2008-MAY-20 02:52:43.563 Y 2008-MAY-20 03:22:43.841 2008-MAY-20 05:29:38.761 Y 2008-MAY-20 07:41:13.485 2008-MAY-25 13:48:04.854 Y 2008-MAY-25 13:58:06.849 2008-MAY-25 22:07:16.553 Y 2008-MAY-25 23:03:12.625 2008-JUN-02 10:03:58.096 Y 2008-JUN-02 10:14:27.091 2008-JUN-02 11:36:51.738 Y 2008-JUN-02 11:48:30.030 2008-JUN-02 16:26:10.578 Y 2008-JUN-02 17:44:45.819 2008-JUN-04 06:07:36.017 Y 2008-JUN-04 10:14:33.076 2008-JUN-04 17:19:08.120 Y 2008-JUN-04 17:25:45.259 2008-JUN-06 13:07:57.967 Y Segment No.: 4 Object: -53312 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2008-JUN-06 13:07:57.967 2008-JUN-06 19:51:01.512 Y 2008-JUN-06 20:09:59.299 2008-JUN-08 14:42:54.728 Y 2008-JUN-08 15:30:29.703 2008-JUN-08 15:43:17.694 Y 2008-JUN-08 15:49:41.693 2008-JUN-08 18:00:54.596 Y 2008-JUN-08 18:25:58.582 2008-JUN-09 13:46:36.289 Y 2008-JUN-09 14:22:12.871 2008-JUN-14 10:27:48.093 Y 2008-JUN-14 10:48:20.083 2008-JUN-16 19:27:57.937 Y 2008-JUN-16 19:42:06.326 2008-JUN-28 20:26:43.503 Y 2008-JUN-28 20:33:07.499 2008-JUN-30 23:57:53.579 Y