Measured scattering-matrix-data and a polarimetric CFAR-detector which works on this data
Abstract
Problems with a polarimetric radar which is able to measure the complete scattering matrix (SM) of a reflecting object are discussed. Emphasis is placed on polarimetric signal processing, in which the multichannel polarimetric target information is used to obtain improved results compared with signal processing of a nonpolarimetric radar. Measured SM data of different targets (rain and ground clutter and a jet, measured at different aspect angles) obtained with the operational DLR polarimetric radar are discussed. The target-dependent differences of the data are given. A polarimetric CFAR (constant false alarm rate) detector which uses the complete information of the SM is described. The probability of detection and the false alarm rate of this new CFAR-detector, which can decide about the presence of a target even in situations when a conventional CFAR-detector fails, are evaluated.
- Publication:
-
IEEE 1990 International Radar Conference
- Pub Date:
- 1990
- Bibcode:
- 1990radr.conf..514W
- Keywords:
-
- Clutter;
- False Alarms;
- Polarimetry;
- Radar Measurement;
- Radar Targets;
- S Matrix Theory;
- Aircraft;
- Far Fields;
- Fourier Transformation;
- Probability Theory;
- Rain;
- Signal Processing;
- Communications and Radar