PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM STANDARD_DATA_PRODUCT_ID = HEA DATA_SET_ID = "MEX-M-MRS-1/2/3-PRM-0107-V1.0" PRODUCT_ID = "M00SUE0L1A_HEA_041911812_00.TXT" PRODUCT_CREATION_TIME = 2005-10-19T16:15:52.000 PRODUCER_ID = "SUE" INSTRUMENT_HOST_ID = "MEX" OBJECT = TEXT PUBLICATION_DATE = 2004-07-20 NOTE = "DSN MEX Data Collection: days 185-200" END_OBJECT = TEXT END Open Loop Data ============== Data Collection --------------- We have collected and completed quick-look processing on the following MEX RSR open loop data at Stanford: DOY DSS RSR BAND RSR CH KSPS BT REC RECS RSR MAX START STOP ID RS LEN FILE NAME SNR --- --- -------- -------- ---- --- -- ---- -- ----- ----- ------------ ----- 185 65 14:15:00 14:30:00 X/XR 4 1 2 16 8260 901 4185141A.RSR 44.5 185 65 14:15:00 14:30:00 X/SR 3 1 2 16 8260 901 4185141B.RSR 32.0 189 65 19:07:00 19:22:00 X/XR 4 1 2 16 8260 901 4189190A.RSR 46.7 189 65 19:07:00 19:22:00 X/SR 3 1 2 16 8260 901 4189190B.RSR 31.7 191 65 18:12:00 18:27:00 X/XR 4 1 2 16 8260 901 4191181A.RSR 48.3 191 65 18:12:00 18:27:00 X/SR 3 1 2 16 8260 901 4191181B.RSR 32.3 192 65 14:22:00 14:37:00 X/XR 4 1 2 16 8260 901 4192142A.RSR 45.5 192 65 14:22:00 14:37:00 X/SR 3 1 2 16 8260 901 4192142B.RSR 32.1 193 65 17:15:00 17:30:00 X/XR 4 1 2 16 8260 901 4193171A.RSR -2.4 193 65 17:15:00 17:30:00 X/SR 3 1 2 16 8260 901 4193171B.RSR -1.8 196 15 19:14:00 19:29:00 X/XR 4 1 2 16 8260 901 4196191A.RSR 48.3 197 65 15:23:00 15:38:00 X/XR 4 1 2 16 8260 901 4197152A.RSR 40.9 197 65 15:23:00 15:38:00 X/SR 3 1 2 16 8260 901 4197152B.RSR 30.3 198 65 18:18:00 18:33:00 X/XR 4 1 2 16 8260 901 4198181A.RSR 47.8 198 65 18:18:00 18:33:00 X/SR 3 1 2 16 8260 901 4198181B.RSR 32.0 199 63 14:27:00 14:42:00 X/XR 4 1 2 16 8260 901 4199142A.RSR -1.5 199 63 14:27:00 14:42:00 X/SR 3 1 2 16 8260 901 4199142B.RSR -1.6 200 65 17:20:00 17:35:00 X/XR 4 1 2 16 8260 901 4200172A.RSR 47.6 200 65 17:20:00 17:35:00 X/SR 3 1 2 16 8260 901 4200172B.RSR 32.1 Except as noted below, both the S- and X-band data appear to be of good quality for science. Columns are as follows, left to right: DOY day of year, starting from 001 on 1 January 2004 DSS DSN station number RSR START UTC start time of RSR data transferred to Stanford RSR STOP UTC stop time of RSR data transferred to Stanford BAND uplink band/downlink band and polarizarion RSR ID 3 = RSR2A; 4 = RSR2B CH subchannel number KSPS sampling rate (I/Q pairs per second) BT RS sample bit resolution (16 bits I, 16 bits Q) REC LEN record length in RSR data file (bytes) RECS number of records in file transferred to Stanford FILE NAME name of file at Stanford MAX SNR maximum SNR from quick-look processing (carrier dB in one Hz) Anomalies --------- There is no signal in the RSR data from either S- or X-band collected on day 193, yet Gene Goltz reported that the occultation occured at approximately 17:27:22. We have no explanation for this discrepancy. Similarly, Gene reports that the occultation occurred at approximately 14:39:09 on day 199, yet we can find no signal in either the S- or X-band RSR data. The MEX occultation on DOY 185 (pass 0398) over DSS-15 wasn't identified as having both S- and X-band downlinks, so it was not recorded. Sophia No indicated that this was due to a mix-up in day numbering. The MEX occultation on DOY 187 showed S-band being turned on just before the end of track at DSS 65. Ingress would have been after the end of track, so no recording was attempted. The MEX occultation on DOY 190 (pass 0403) over DSS-65 was scripted, but the script failed to execute, so no data were recorded. The MEX Occultation on DOY 194 (pass 0407) over DSS-65 was not recorded because Gene was ill. There was no S-band for the occultation on day 196, so only X-band was recorded. The X-band carrier signal on days 198 and 200 has 0.5 dB dropouts approximately every two minutes and lasting 20-30 seconds. Cause is not known.