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Availability: Archived at NSSDC, accessible from elsewhere

Time span: 1989-08-18 to 1989-09-06


This description was generated automatically using input from the Planetary Data System.

Data Set Overview ================= This dataset consists of edited browse data derived from an original dataset obtained from the Voyager 2 Planetary Radio Astronomy (PRA) instrument in the vicinity of Neptune. Data are provided for 70 instrument channels covering the range from 1.2 kHz to 1326 kHz in uniform 19.2 kHz steps, each 1 kHz wide. Data are included for the period 1989:0:0:0 through 1989:23:59:59. Parameters ========== Sampling Parameter Name : time Sampling Parameter Resolution : 0.001 seconds Minimum Sampling Parameter : N/A Maximum Sampling Parameter : N/A Sampling Parameter Interval : 48.0 seconds Minimum Available Sampling Interval : 12.0 seconds Data Set Parameter Name : radio wave spectrum Noise Level : 2400 mB Data Set Parameter Unit : millibel Radio wave spectrum: A set of derived parameters consisting of power fluxes at various contiguous frequencies over a range of frequencies. The MKS units are: (hertz.meter**2). Processing ========== In order to produce this dataset from the original raw PRA data, several steps have been taken: 1. The PRA operates in a variety of modes; data from modes in which the receiver does not scan rapidly through its frequency range have been removed; 2. The data have been calibrated as best we know how; 3. The data have been split into Left Hand Circular (LHC) and Right Hand Circular (RHC) components; 4. The data have been binned into 48-second intervals. Thus, values at a given channel are separated in time by an increment of 48 seconds; each 48-second time interval has associated with it a value for LHC polarization and one for RHC polarization. During data gaps, the entire record is absent from the dataset; that is, missing records have not been zero-filled or otherwise marked. Bad data within a record is indicated by the value zero, which cannot otherwise occur. Each datum is returned as a 16-bit quantity; it represents the mean power received in the given channel at the specified time and polarization. The returned quantity is the value in mB about a reference flux density. The value of 0 mB represents a voltage of 1 microvolt across the front end of the receiver. To convert a returned quantity to flux, use the formula: flux = 7.0x10^(-22)x10^(mB/1000) W m-2 Hz-1

These data are available on-line from the Planetary Data System (PDS) at:

Alternate Names



  • Planetary Science: Fields and Particles

Additional Information



Questions and comments about this data collection can be directed to: Dr. Edwin V. Bell, II



NameRoleOriginal AffiliationE-mail
Dr. David R. EvansGeneral ContactRadiophysics,
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