CCSD3ZF0000100000001NJPL3IF0PDSX00000001 PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = DATA_SET DATA_SET_ID = "ULY-J-SCE-4-SUMM-RANGING-10MIN-V1.0" OBJECT = DATA_SET_INFORMATION DATA_SET_NAME = "ULYSSES JUPITER SOLAR CORONA EXPER. RANGING DATA 10 MIN AVG" DATA_SET_COLLECTION_MEMBER_FLG = N START_TIME = 1992-02-05T21:44:24.000Z STOP_TIME = 1992-02-09T18:44:26.000Z DATA_SET_RELEASE_DATE = 1998-05-01 PRODUCER_FULL_NAME = "MICHAEL K. BIRD" DETAILED_CATALOG_FLAG = N DATA_OBJECT_TYPE = "TIME SERIES" DATA_SET_DESC = " Data Set Overview ================= The Ulysses spacecraft was occulted by the Io Plasma Torus (IPT) during its Jupiter encounter on 8 February 1992. The Ulysses dual-frequency radio subsystem used by the Ulysses Solar Corona Experiment (SCE) was utilized to measure the electron content (column density) of the IPT [BIRDETAL1992B]. In the nominal mode for radio-sounding observations [BIRDETAL1992A], both downlinks (S-band: f_s = 2.3 GHz; X-band: f_x = 8.4 GHz) are phase coherent with the uplink (S-band: f_u = 2.1 GHz). The dual-frequency radio-sounding technique exploits the dispersive nature of ionized media on the propagation of the two downlinks. The tiny Doppler shift due to plasma moving in and out of the ray path is greater at S-band than at the higher frequency X-band. The SCE data are obtained from the Radio Science Support group at JPL. There are basically two types of data: Ranging and Doppler (Frequency), recorded as a function of UT Ground Received Time. The raw data are delivered in special binary files called ATDFs (Archival Tracking Data Files), containing Ranging and Doppler data from the standard DSN tracking receivers. There are high-time resolution Doppler data from special radio science receivers (so-called 'open loop' data) as well. These are in files called ODRs (Original Data Records). ATDFs are files of radiometric data produced by the Network Operations Control Center (NOCC) Navigation Subsystem (NAV). They are derived from Intermediate Data Records by NAV and contain all radiometric measurements received from the DSN station including signal levels (`AGC' = automatic gain control in dBm), antenna pointing angles, frequency (often referred to simply as `Doppler'), range, and residuals. Doppler data are often used to infer spacecraft radial motion relative to the tracking antenna. Data values in ATDFs are reported at rates no higher than 10 per second. For the Ulysses Jupiter encounter the received frequencies at S-Band and X-band were recorded at a sample time of one per second. Each ATDF data record contains 117 parameters, stored in records of 288 bytes. The ATDF is described in section TRK-2-25 of the JPL Document 820-13 [DSN820-13]. The ATDFs have been analyzed for the Jupiter encounter and a detailed report has been published [BIRDETAL1993]. Data files have been generated which contain the Ranging and Doppler data at various stages of processing. Stage #1 is generally just stripping the Ranging/Doppler data from the ATDFs. Stage #2 is to 'clean' the data files by weeding out obviously bad data. Stage #3 is to produce a 'final data set', a table of the measured data plus physically relevant quantities as function of time. Data ==== The following table gives an idea about the size and coverage of the ranging data set: Ulysses SCE Ranging data at Jupiter: Stage# start stop ASCII size gzip size doy:hh:mm doy:hh:mm (kB) (kB) 1 36:15:54 41:14:44 116 17 2 36:20:30 40:18:44 88 13 3 36:21:44 40:18:44 22 4 All stage #3 ranging data from the Ulysses Jupiter encounter have been provided to this archive in the ALLRANGE directory. No ranging data were taken during the Jupiter encounter pass at DSS 43 on February 8, 1992. Here are the first few lines of the ASCII table: set no dss doy:hh:mm:ss difrng econt 1 1 61 36:21:44:24 6 22 1 2 61 36:21:54:24 53 210 1 3 61 36:22: 4:24 16 62 1 4 61 36:22:14:25 38 150 1 5 61 36:22:44:24 67 266 1 6 61 36:23: 4:24 47 186 1 7 61 36:23:14:24 27 106 1 8 61 36:23:24:24 60 238 1 9 61 36:23:34:24 56 222 where: set = running number for each DSN tracking pass during Jupiter encounter no = running number for range measurement within each tracking pass dss = DSN station number doy = Day of year in 1992 hh:mm:ss = hours, minutes seconds (UT, ground received) difrng = differential range delay in `range units' [DSN810-5] econt = electron content in `hexems' [BIRDETAL1992B]" CONFIDENCE_LEVEL_NOTE = " Confidence Level Overview ========================= difrng (RU) and econt (hexems) are given to the nearest respective unit. The estimated accuracy of a differential range measurement is of the order of 50 range units. For more information regarding the confidence level of this data set please contact: MICHAEL K. BIRD Radioastronomisches Institut Universitat Bonn Auf dem Hugel 71 53121 Bonn GERMANY Phone: 49-228-733651 or 49-228-733675 Fax: 49-228-733672 Internet: mbird@astro.uni-bonn.de" END_OBJECT = DATA_SET_INFORMATION OBJECT = DATA_SET_TARGET TARGET_NAME = JUPITER END_OBJECT = DATA_SET_TARGET OBJECT = DATA_SET_HOST INSTRUMENT_HOST_ID = ULY INSTRUMENT_ID = SCE END_OBJECT = DATA_SET_HOST OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "BIRDETAL1992A" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "BIRDETAL1992B" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "BIRDETAL1993" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "BIRDETAL1994" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "BIRDETAL1996" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "DSN810-5" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "DSN820-13" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "PAETZOLDETAL1992" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "PAETZOLDETAL1995" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "PAETZOLDETAL1996" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "WOO1996" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "WOOETAL1995A" END_OBJECT = DATA_SET_REFERENCE_INFORMATION OBJECT = DATA_SET_REFERENCE_INFORMATION REFERENCE_KEY_ID = "WOOETAL1995B" END_OBJECT = DATA_SET_REFERENCE_INFORMATION END_OBJECT = DATA_SET END