INSTRUMENT: PLASMA WAVE RECEIVER
SPACECRAFT: VOYAGER 1
Instrument Id : PWS Instrument Host Id : VG1 Principal Investigator : DONALD A. GURNETT PI PDS User Id : DGURNETT Instrument Name : PLASMA WAVE RECEIVER Instrument Type : PLASMA WAVE SPECTROMETER Build Date : UNK Instrument Mass : 1.400000 Instrument Length : 0.318000 Instrument Width : 0.185000 Instrument Height : 0.048000 Instrument Serial Number : SN002 Instrument Manufacturer Name : THE UNIVERSITY OF IOWA
The Plasma Wave Receiver on Voyager consists of both a 16-channel spectrum analyzer covering the range of 10 Hertz to 56.2 kiloHertz and a wideband waveform receiver which returns the waveform of waves in the frequency range of 40 Hertz to 12 kiloHertz. The spectrum analyzer provides data on a continual basis with a maximum temporal resolution of one spectrum per 4 seconds. The waveform receiver returns 4-bit samples of the electric field measured at a rate of 28,800 samples per second.
Because of the very high data rate, the waveform samples must be transmitted in the same manner as the Voyager imaging information. At Jupiter, some 10,000 48-second waveform frames were obtained. At Saturn, the number of frames obtained was very small due to the lower telemetry rates available at the greater distance of that planet.
The primary science objective of the Voyager plasma wave investigation is to make the first surveys of the plasma wave and low frequency radio wave spectra in the magnetospheres of the outer planets: Jupiter and Saturn. Plasma waves participate in a fundamental manner in the dynamics of planetary magnetospheres and in the interactions of that magnetosphere with the external solar wind and internal perturbations such as those induced by satellites interior to the magnetosphere. Plasma waves also provide diagnostic information about the plasma environment near the planets including such parameters as electron density and sometimes temperature. The instrument is also sensitive to low frequency radio emissions and, therefore, acts as a low frequency extens