MEX-M-MARSIS-3-RDR-AIS-EXT6

Data Set Overview The Mars Express Mars Advanced Radar for Subsurface and Active Ionospheric Sounding (MARSIS) data set includes all spectral information calibrated in units of spectral density for the Active Ionospheric Sounder over the Mars Express mission. This data set includes calibrated values for each transmit event and the corresponding temporal data for each frequency channel. Parameters This data set comprises the electric field spectral densities obtained via the electric dipole antenna sensor. Processing Data in this data set were processed by the use of a number of software programs. These programs reassembled and decompressed the raw telemetry data. These raw values were then calibrated into physical units: power received by the electric antenna. The data products were calibrated using the best calibration tables and algorithms available at the time of data archiving. Should a significant improvement in calibration become available, an erratum will be noted in the erratum section. Later versions of the products may contain better calibrations. Data The AIS calibrated full resolution data set includes several binary tables of wave spectra as a function of time from each of the various transmit events. Each table will contain fixedlength records including columns for time, transmit frequency, and spectral densities from the temporal measurements. The number of transmit frequencies is constant at 160 frequencies per frame and the number of samples per transmit frequency is constant at 80 per transmit pulse. Interpreting the provided intensities as remote emissions requires knowledge of the time delay between the emitted pulse and the measured electric spectral density. The time offsets from the onset of the transmit pulse until the measurement of each spectral density value may be found from the relation: delay time (microseconds) 167.443 + 91.4286 * (item1 truncated!, Please see actual data for full [truncated!, Please see actual data for full text]