Auto and cross-correlation analysis techniques on-board spacecraft
Abstract
An efficient method of producing spectrograms of signals recorded on spacecraft is to compute on board the correlation function and, after telemetering this to ground, to subject it to an FFT. This is the procedure adopted on GEOS 1 and 2. Results are presented of whistlers, chorus, hiss and electrostatic waves illustrating that high quality spectrograms can be obtained by this method. Correlators to be flown on the InterCosmos spacecraft MAGIK, despite having a very low allocated telemetry rate still yield spectrograms on which one may distinguish chorus, hiss and whistlers.
- Publication:
-
Annals of Telecommunications
- Pub Date:
- April 1979
- Bibcode:
- 1979AnTel..34..187J
- Keywords:
-
- Autocorrelation;
- Correlators;
- Cross Correlation;
- Digital Techniques;
- Signal Analysis;
- Spacecraft Electronic Equipment;
- Dawn Chorus;
- Geos Satellites (Esa);
- Hiss;
- Spectrograms;
- Spectrum Analysis;
- Whistlers;
- Space Communications, Spacecraft Communications, Command and Tracking