PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 80 START_TIME = 1993-11-09T09:17:32Z STOP_TIME = 1993-11-09T10:17:41Z DATA_SET_ID = "MGN-V-RSS-1-BSR-V1.0" SPACECRAFT_NAME = MAGELLAN TARGET_NAME = VENUS ^PS_DOCUMENT = {"33130917.PS1", "33130917.PS2", "33130917.PS3", "33130917.PS4", "33130925.PS1", "33130925.PS2", "33130925.PS3", "33130925.PS4", "33130933.PS1", "33130933.PS2", "33130933.PS3", "33130933.PS4", "33131003.PS1", "33131003.PS2", "33131003.PS3", "33131003.PS4", "33131011.PS1", "33131011.PS2", "33131011.PS3", "33131011.PS4"} OBJECT = PS_DOCUMENT DOCUMENT_NAME = "Bistatic Radar Experiment Quick Look Plot Set" PUBLICATION_DATE = 1996-10-18 DOCUMENT_TOPIC_TYPE = "QUICK LOOK PLOTS" INTERCHANGE_FORMAT = BINARY DOCUMENT_FORMAT = "POSTSCRIPT" FILES = 20 DESCRIPTION = " PostScript files contain one figure each showing quick look views after early processing of raw data. These may be useful in identifying data which deserve more detailed inspection. For example, by printing the PostScript file, the user can determine whether an echo signal was easily detectable or whether the direct signal was captured. Certain data anomalies (saturation in the analog-to-digital converters, clipping in amplifiers ahead of the ADCs, receiver tuning errors, poor choices of receiver gain, etc.) can be readily seen in the plots. Each PostScript file is sized to fit on a single 8-1/2 x 11 inch page. Each landscape format page includes four panels showing a histogram of raw data (8-bit) samples (upper left), one-minute average power spectra derived from the raw samples (upper right), one-second averages of raw sample power versus time (lower left), and an extract of the first few lines of the source ODR PDS label (lower right). PostScript file names have the form ydddhhmm.PSc where y is the one-digit year (3 or 4) ddd is the three-digit day-of-year (001-366) hh is the two-digit hour (00-23) mm is the two-digit minute (00-59) c is the one digit receiver channel (1-4) The file names are chosen so that they match the ODR file names ydddhhmm.ODR. Receiver channels (c) are generally defined as follows: receiver 1 was X-RCP, receiver 2 was S-RCP, receiver 3 was X-LCP, and receiver 4 was S-LCP. In 1994 only two channels (X-RCP and X-LCP or S-RCP and S-LCP) were recorded; the channel numbers were as before. In most cases the plots are accurately described by text annotation within the panels. In a few instances the annotation was garbled or was hidden. In a few other cases, the annotation (which was composed automatically by the plotting program) may simply be wrong. For example, approximately two-thirds of the samples which should have gone to 32791324.ODR were lost during data acquisition. The start times shown in the plots are correct, but the end times used by the plotting program were adjusted for the actual number of samples. Users should exercise care in using the plot information; it is provided to assist browsers but has not been rigorously produced. Each panel was generated by MATLAB as a Level 1 PostScript file for black and white printers. The panels were then assembled into single page PostScript files using the psmulti utility, a PERL script written by D. Murray Laing. The computing platform was a Sun SPARC-2 running SunOS 4.1.3. MATLAB is a technical computing environment for computation and visualization distributed by The Math Works, Inc., Natick MA. MATLAB is a trademark of The Math Works, Inc. PostScript is a trademark of Adobe Systems, Inc." END_OBJECT = PS_DOCUMENT END