Title :
Block adaptive quantization of Magellan SAR data
Author :
Kwok, Ronald ; Johnson, William T K
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
fDate :
7/1/1989 12:00:00 AM
Abstract :
A report is presented on a data compression scheme that will be used to reduce the SAR (synthetic-aperture radar) data rate on the US NASA Magellan (MGN) mission to Venus. The MGN spacecraft has only one scientific instrument, namely, a radar system that is used for imaging the surface. for altimetric profiling of the planet topography, and for measuring radiation of the planet surface. A straightforward implementation of the scientific requirements of the mission results in a data rate higher that can be accommodated by the available system bandwidth. A data-rate-reduction scheme which includes operation of the radar in burst mode and block adaptive quantization of the SAR data is selected to satisfy the scientific requirements
Keywords :
Venus; data compression; height measurement; radar applications; radioastronomical techniques; space vehicles; Magellan SAR; Venus; altimetric profiling; block adaptive quantization; burst mode; data compression scheme; data-rate-reduction scheme; imaging radar measurement technique; instrument; planet; radioastronomy; spacecraft; synthetic aperture radar; terrain mapping; topography; Data compression; Instruments; NASA; Planets; Quantization; Radar imaging; Space vehicles; Surface topography; Synthetic aperture radar; Venus;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
