Data Set Information
DATA_SET_NAME VG2 URA PWS RESAMPLED SUMMARY SPECTRUM ANALYZER 48SEC V1.0
DATA_SET_ID VG2-U-PWS-4-SUMM-SA-48SEC-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION This data set consists of 48-second calibrated, averaged wave electric field intensities from the Voyager 2 Plasma Wave Receiver spectrum analyzer obtained in the vicinity of the Uranian magnetosphere. For each 48-second interval, a geometric average field strength is determined for each of the 16 spectrum analyzer channels whose center frequencies range from 10 Hertz to 56.2 kilo- Hertz and which are logarithmically spaced in frequency, four channels per decade. The time associated with each set of averages is the beginning of the averaging interval. Averages are stored in units of volt/meter. During data gaps where complete 48-second intervals are missing, no entries exist in the file, that is, the gaps are not zero-filled or tagged in any other way. Additional information about this dataset and the instrument which produced it can be found elsewhere in this catalog. An overview of the data in this data set can be found in Gurnett et al. [1986] and a complete instrument description can be found in Scarf and Gurnett [1977]. SAMPLING_PARAMETER_NAME : TIME SAMPLING_PARAMETER_RESOLUTION : 48.000000 MINIMUM_SAMPLING_PARAMETER : 197708201553.000000 MAXIMUM_SAMPLING_PARAMETER : N/A SAMPLING_PARAMETER_INTERVAL : 48.000000 MINIMUM_AVAILABLE_SAMPLING_INT : 4.000000 SAMPLING_PARAMETER_UNIT : SECOND DATA_SET_PARAMETER_NAME : PLASMA WAVE SPECTRUM NOISE_LEVEL : 0.000005 DATA_SET_PARAMETER_UNIT : VOLT/METER
DATA_SET_RELEASE_DATE 1993-02-01T00:00:00.000Z
START_TIME 1986-01-23T12:00:00.000Z
STOP_TIME 1986-01-31T12:00:00.000Z
MISSION_NAME VOYAGER
MISSION_START_DATE 1972-07-01T12:00:00.000Z
MISSION_STOP_DATE N/A (ongoing)
TARGET_NAME URANUS
TARGET_TYPE PLANET
INSTRUMENT_HOST_ID VG2
INSTRUMENT_NAME PLASMA WAVE RECEIVER
INSTRUMENT_ID PWS
INSTRUMENT_TYPE PLASMA WAVE SPECTROMETER
NODE_NAME Planetary Plasma Interactions
ARCHIVE_STATUS ARCHIVED
CONFIDENCE_LEVEL_NOTE This data set includes all available spectrum analyzer data within the interval of time covered. The data set has been cleaned as well as possible for periodic noise spikes due to a stepper motor operating on the LECP and a modulated grid within the PLS. The averages do not include these noise spikes. Other possible sources of noise which have not been eliminated include random intense spikes of noise below 1 kiloHertz due to the operation of attitude control thrusters. Other randomly occurring spikes or time periods of intense spikes over the entire frequency range are indicative of telemetry errors. No attempt has been made to remove spikes since some could be valid data, i.e. real bursts of wave activity. The 17.8-Hz channel is sometimes contaminated by interference from the PRA instrument, depending on that instrument's mode. This interference is at a relatively constant level. A failure in the Voyager 2 flight data system a few months after launch has decreased the sensitivity and the calibration accuracy of the upper 8 spectrum analyzer channels (i.e. 1 kiloHertz and higher).
CITATION_DESCRIPTION Kurth, W.S., VG2-U-PWS-4-SUMM-SA-48SEC-V1.0, VG2 URA PWS RESAMPLED SUMMARY SPECTRUM ANALYZER 48SEC V1.0, NASA Planetary Data Syetsm, 1993.
ABSTRACT_TEXT This data set consists of 48-second calibrated, averaged wave electric field intensities from the Voyager 2 Plasma Wave Receiver spectrum analyzer obtained in the vicinity of the Uranian magnetosphere. For each 48-second interval, a geometric average field strength is determined for each of the 16 spectrum analyzer channels whose center frequencie range from 10 Hertz to 56.2 kilo- Hertz and which are logarithmically spaced in frequency, four channels per decade. Th time associated with each set of averages is the beginning of the averaging interval. Averages are stored in units of volt/meter.
PRODUCER_FULL_NAME DR. WILLIAM S. KURTH
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