Probability distribution of Weibull clutter after MTI and MTD filtering
Abstract
The computer simulation method is used to address the problem of the probability distribution of Weibull clutter after MTI and MTD filtering when the shape parameters of input clutter assume values from 0.6 to 2.0 and simulate the false rate of output clutter with the importance sampling technique. It is shown that output clutter amplitude obeys a Weibull distribution approximately when the input Weibull clutter is processed by linear filtering, and the shape parameter of output clutter is related to the shape parameter, correlation of input clutter, and the coefficients of the filters. The more the shape parameter approaches 2.0, the better the probability distribution of output clutter coincides with the Weibull distribution. This conclusion is useful in designing a CFAR system when the input Weibull clutter is processed by MTI or MTD.
- Publication:
-
CIE 1991 International Conference on Radar (CICR-91)
- Pub Date:
- 1991
- Bibcode:
- 1991cie..proc..511L
- Keywords:
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- Moving Target Indicators;
- Probability Distribution Functions;
- Radar Clutter Maps;
- Radar Filters;
- Radar Targets;
- Weibull Density Functions;
- Autocorrelation;
- Computerized Simulation;
- False Alarms;
- Radar Detection;
- Signal Processing;
- Communications and Radar