M01 High Gain Antenna Orientation CK File for Extended, 2007-04 ... 2007-06 =========================================================================== Created by Boris Semenov, NAIF/JPL, Thu Jul 19 11:32:15 PDT 2007 Orientation Data in the File -------------------------------------------------------- This file contains orientation and angular rate data for the Mars'01 Odyssey (M01) High Gain Antenna (HGA) Inner and Outer gimbal frames. The orientation of the 'M01_HGA_INNER_GIMBAL' is given with respect to the 'M01_HGA_BOOM' frame; orientation of the 'M01_HGA_OUTER_GIMBAL' is given with respect to the 'M01_HGA_INNER_GIMBAL' frame. The NAIF IDs for the 'M01_HGA_INNER_GIMBAL' and 'M01_HGA_OUTER_GIMBAL' frames are -53211 and -53212. 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 HGA boom frame and the outer gimbal frame orientation with respect to the inner gimbal frame. The orientation was computed on the ground from the HGA 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 ------------------------ ------------------------ 2007-APR-01 00:00:00.347 2007-JUN-30 23:59:05.991 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 antenna gimbal cannot rotate very fast and that the highest accuracy of the HGA 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: naif0008.tls ORB1_SCLKSCET.00142.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_hga_2007-04-01.bc m01_hga_2007-04-02.bc m01_hga_2007-04-03.bc m01_hga_2007-04-04.bc m01_hga_2007-04-05.bc m01_hga_2007-04-06.bc m01_hga_2007-04-07.bc m01_hga_2007-04-08.bc m01_hga_2007-04-09.bc m01_hga_2007-04-10.bc m01_hga_2007-04-11.bc m01_hga_2007-04-12.bc m01_hga_2007-04-13.bc m01_hga_2007-04-14.bc m01_hga_2007-04-15.bc m01_hga_2007-04-16.bc m01_hga_2007-04-17.bc m01_hga_2007-04-18.bc m01_hga_2007-04-19.bc m01_hga_2007-04-20.bc m01_hga_2007-04-21.bc m01_hga_2007-04-22.bc m01_hga_2007-04-23.bc m01_hga_2007-04-24.bc m01_hga_2007-04-25.bc m01_hga_2007-04-26.bc m01_hga_2007-04-27.bc m01_hga_2007-04-28.bc m01_hga_2007-04-29.bc m01_hga_2007-04-30.bc m01_hga_2007-05-01.bc m01_hga_2007-05-02.bc m01_hga_2007-05-03.bc m01_hga_2007-05-04.bc m01_hga_2007-05-05.bc m01_hga_2007-05-06.bc m01_hga_2007-05-07.bc m01_hga_2007-05-08.bc m01_hga_2007-05-09.bc m01_hga_2007-05-10.bc m01_hga_2007-05-11.bc m01_hga_2007-05-12.bc m01_hga_2007-05-13.bc m01_hga_2007-05-14.bc m01_hga_2007-05-15.bc m01_hga_2007-05-16.bc m01_hga_2007-05-17.bc m01_hga_2007-05-18.bc m01_hga_2007-05-19.bc m01_hga_2007-05-20.bc m01_hga_2007-05-21.bc m01_hga_2007-05-22.bc m01_hga_2007-05-23.bc m01_hga_2007-05-24.bc m01_hga_2007-05-25.bc m01_hga_2007-05-26.bc m01_hga_2007-05-27.bc m01_hga_2007-05-28.bc m01_hga_2007-05-29.bc m01_hga_2007-05-30.bc m01_hga_2007-05-31.bc m01_hga_2007-06-01.bc m01_hga_2007-06-02.bc m01_hga_2007-06-03.bc m01_hga_2007-06-04.bc m01_hga_2007-06-05.bc m01_hga_2007-06-06.bc m01_hga_2007-06-07.bc m01_hga_2007-06-08.bc m01_hga_2007-06-09.bc m01_hga_2007-06-10.bc m01_hga_2007-06-11.bc m01_hga_2007-06-12.bc m01_hga_2007-06-13.bc m01_hga_2007-06-14.bc m01_hga_2007-06-15.bc m01_hga_2007-06-16.bc m01_hga_2007-06-17.bc m01_hga_2007-06-18.bc m01_hga_2007-06-19.bc m01_hga_2007-06-20.bc m01_hga_2007-06-21.bc m01_hga_2007-06-22.bc m01_hga_2007-06-23.bc m01_hga_2007-06-24.bc m01_hga_2007-06-25.bc m01_hga_2007-06-26.bc m01_hga_2007-06-27.bc m01_hga_2007-06-28.bc m01_hga_2007-06-29.bc m01_hga_2007-06-30.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: 3.2.0, 2006-11-02. SPICE Toolkit Version: N0061. Summary for: m01_hga_ext11.bc Segment No.: 1 Object: -53211 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2007-APR-01 00:00:00.347 2007-APR-01 12:31:49.229 Y 2007-APR-01 12:38:11.295 2007-APR-01 14:15:19.984 Y 2007-APR-01 15:25:49.555 2007-APR-01 15:25:49.555 Y 2007-APR-01 17:32:49.398 2007-APR-03 12:09:49.311 Y 2007-APR-03 12:24:30.805 2007-APR-04 04:58:02.108 Y 2007-APR-04 05:04:21.690 2007-APR-06 16:38:20.888 Y 2007-APR-06 18:25:00.842 2007-APR-09 21:24:10.984 Y 2007-APR-09 22:06:50.968 2007-APR-11 03:58:50.234 Y 2007-APR-11 04:05:14.221 2007-APR-11 04:20:10.220 Y 2007-APR-11 04:30:50.211 2007-APR-12 01:41:01.996 Y 2007-APR-12 02:35:37.671 2007-APR-12 12:58:33.414 Y 2007-APR-12 13:04:57.410 2007-APR-14 03:04:27.987 Y 2007-APR-14 03:56:40.466 2007-APR-16 12:13:43.080 Y 2007-APR-16 12:20:07.079 2007-APR-16 13:21:59.050 Y 2007-APR-16 13:29:53.353 2007-APR-18 03:53:23.920 Y 2007-APR-18 03:58:46.115 2007-APR-24 13:32:34.433 Y 2007-APR-24 13:41:06.428 2007-APR-25 03:50:05.794 Y 2007-APR-25 04:47:46.066 2007-APR-26 23:18:21.862 Y 2007-APR-27 11:07:28.781 2007-APR-28 20:39:11.990 Y 2007-APR-28 21:00:31.984 2007-MAY-01 09:57:59.652 Y 2007-MAY-01 10:57:50.623 2007-MAY-01 21:51:11.777 Y 2007-MAY-01 22:46:32.955 2007-MAY-02 23:32:24.466 Y 2007-MAY-03 01:29:17.622 2007-MAY-06 18:25:22.641 Y 2007-MAY-06 18:58:51.525 2007-MAY-06 19:22:19.519 Y 2007-MAY-06 19:28:43.514 2007-MAY-06 20:11:31.404 Y 2007-MAY-06 20:17:37.396 2007-MAY-14 01:53:16.265 Y 2007-MAY-14 03:04:11.742 2007-MAY-14 03:30:23.130 Y 2007-MAY-14 03:58:31.420 2007-MAY-17 13:40:53.527 Y 2007-MAY-17 13:53:41.522 2007-MAY-17 13:53:41.522 Y 2007-MAY-17 14:32:05.506 2007-MAY-17 14:44:53.501 Y 2007-MAY-17 15:21:09.494 2007-MAY-17 15:29:41.493 Y 2007-MAY-17 15:44:37.480 2007-MAY-17 15:44:37.480 Y 2007-MAY-17 15:51:01.479 2007-MAY-17 15:53:09.475 Y 2007-MAY-17 16:03:49.474 2007-MAY-17 16:03:49.474 Y 2007-MAY-17 16:10:13.469 2007-MAY-17 16:12:21.469 Y 2007-MAY-17 16:35:49.459 2007-MAY-17 18:24:28.518 Y 2007-MAY-17 18:30:52.514 2007-MAY-17 18:41:32.513 Y 2007-MAY-17 18:47:56.508 2007-MAY-17 18:54:29.406 Y 2007-MAY-17 19:00:53.402 2007-MAY-23 17:26:07.442 Y 2007-MAY-23 19:22:09.989 2007-MAY-24 07:33:53.702 Y 2007-MAY-24 08:05:49.195 2007-MAY-24 08:12:50.186 Y 2007-MAY-24 08:21:22.182 2007-MAY-30 23:16:15.976 Y 2007-MAY-31 01:07:41.723 2007-JUN-01 04:56:19.410 Y 2007-JUN-01 06:24:01.088 2007-JUN-05 10:00:58.382 Y 2007-JUN-05 10:09:30.377 2007-JUN-06 03:01:24.250 Y 2007-JUN-06 03:22:01.935 2007-JUN-12 11:19:49.964 Y 2007-JUN-12 11:34:45.966 2007-JUN-17 03:21:54.988 Y 2007-JUN-17 03:32:26.979 2007-JUN-19 03:09:05.708 Y Segment No.: 2 Object: -53211 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2007-JUN-19 03:09:05.708 2007-JUN-24 08:06:11.732 Y 2007-JUN-24 11:18:58.369 2007-JUN-24 11:18:58.369 Y 2007-JUN-24 11:38:54.238 2007-JUN-24 11:38:54.238 Y 2007-JUN-24 11:50:58.354 2007-JUN-24 11:50:58.354 Y 2007-JUN-24 12:01:38.345 2007-JUN-26 11:32:28.934 Y 2007-JUN-26 11:41:00.929 2007-JUN-26 11:51:40.928 Y 2007-JUN-26 12:02:20.923 2007-JUN-26 12:15:08.914 Y 2007-JUN-26 12:21:32.913 2007-JUN-30 23:59:05.991 Y Segment No.: 3 Object: -53212 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2007-APR-01 00:00:00.347 2007-APR-01 12:31:49.229 Y 2007-APR-01 12:38:11.295 2007-APR-01 14:15:19.984 Y 2007-APR-01 15:25:49.555 2007-APR-01 15:25:49.555 Y 2007-APR-01 17:32:49.398 2007-APR-03 12:09:49.311 Y 2007-APR-03 12:24:30.805 2007-APR-04 04:58:02.108 Y 2007-APR-04 05:04:21.690 2007-APR-06 16:38:20.888 Y 2007-APR-06 18:25:00.842 2007-APR-09 21:24:10.984 Y 2007-APR-09 22:06:50.968 2007-APR-11 03:58:50.234 Y 2007-APR-11 04:05:14.221 2007-APR-11 04:20:10.220 Y 2007-APR-11 04:30:50.211 2007-APR-12 01:41:01.996 Y 2007-APR-12 02:35:37.671 2007-APR-12 12:58:33.414 Y 2007-APR-12 13:04:57.410 2007-APR-14 03:04:27.987 Y 2007-APR-14 03:56:40.466 2007-APR-16 12:13:43.080 Y 2007-APR-16 12:20:07.079 2007-APR-16 13:21:59.050 Y 2007-APR-16 13:29:53.353 2007-APR-18 03:53:23.920 Y 2007-APR-18 03:58:46.115 2007-APR-24 13:32:34.433 Y 2007-APR-24 13:41:06.428 2007-APR-25 03:50:05.794 Y 2007-APR-25 04:47:46.066 2007-APR-26 23:18:21.862 Y 2007-APR-27 11:07:28.781 2007-APR-28 20:39:11.990 Y 2007-APR-28 21:00:31.984 2007-MAY-01 09:57:59.652 Y 2007-MAY-01 10:57:50.623 2007-MAY-01 21:51:11.777 Y 2007-MAY-01 22:46:32.955 2007-MAY-02 23:32:24.466 Y 2007-MAY-03 01:29:17.622 2007-MAY-06 18:25:22.641 Y 2007-MAY-06 18:58:51.525 2007-MAY-06 19:22:19.519 Y 2007-MAY-06 19:28:43.514 2007-MAY-06 20:11:31.404 Y 2007-MAY-06 20:17:37.396 2007-MAY-14 01:53:16.265 Y 2007-MAY-14 03:04:11.742 2007-MAY-14 03:30:23.130 Y 2007-MAY-14 03:58:31.420 2007-MAY-17 13:40:53.527 Y 2007-MAY-17 13:53:41.522 2007-MAY-17 13:53:41.522 Y 2007-MAY-17 14:32:05.506 2007-MAY-17 14:44:53.501 Y 2007-MAY-17 15:21:09.494 2007-MAY-17 15:29:41.493 Y 2007-MAY-17 15:44:37.480 2007-MAY-17 15:44:37.480 Y 2007-MAY-17 15:51:01.479 2007-MAY-17 15:53:09.475 Y 2007-MAY-17 16:03:49.474 2007-MAY-17 16:03:49.474 Y 2007-MAY-17 16:10:13.469 2007-MAY-17 16:12:21.469 Y 2007-MAY-17 16:35:49.459 2007-MAY-17 18:24:28.518 Y 2007-MAY-17 18:30:52.514 2007-MAY-17 18:41:32.513 Y 2007-MAY-17 18:47:56.508 2007-MAY-17 18:54:29.406 Y 2007-MAY-17 19:00:53.402 2007-MAY-23 17:26:07.442 Y 2007-MAY-23 19:22:09.989 2007-MAY-24 07:33:53.702 Y 2007-MAY-24 08:05:49.195 2007-MAY-24 08:12:50.186 Y 2007-MAY-24 08:21:22.182 2007-MAY-30 23:16:15.976 Y 2007-MAY-31 01:07:41.723 2007-JUN-01 04:56:19.410 Y 2007-JUN-01 06:24:01.088 2007-JUN-05 10:00:58.382 Y 2007-JUN-05 10:09:30.377 2007-JUN-06 03:01:24.250 Y 2007-JUN-06 03:22:01.935 2007-JUN-12 11:19:49.964 Y 2007-JUN-12 11:34:45.966 2007-JUN-17 03:21:54.988 Y 2007-JUN-17 03:32:26.979 2007-JUN-19 03:09:05.708 Y Segment No.: 4 Object: -53212 Interval Begin UTC Interval End UTC AV ------------------------ ------------------------ --- 2007-JUN-19 03:09:05.708 2007-JUN-24 08:06:11.732 Y 2007-JUN-24 11:18:58.369 2007-JUN-24 11:18:58.369 Y 2007-JUN-24 11:38:54.238 2007-JUN-24 11:38:54.238 Y 2007-JUN-24 11:50:58.354 2007-JUN-24 11:50:58.354 Y 2007-JUN-24 12:01:38.345 2007-JUN-26 11:32:28.934 Y 2007-JUN-26 11:41:00.929 2007-JUN-26 11:51:40.928 Y 2007-JUN-26 12:02:20.923 2007-JUN-26 12:15:08.914 Y 2007-JUN-26 12:21:32.913 2007-JUN-30 23:59:05.991 Y