Patent ID: 6018311
Filing Date: 2000-01-25
Classification: G01S

Abstract:
A method of processing data in a sensor system which receives signal returns from pulsed coherent transmitted signals which are transmitted with a pulse repetition rate and with a pulse repetition interval (PRI), comprising the steps of:providing range-filtered data in response to said received signal returns;formatting successive sets of data received during a post detection integration (PDI) interval into a plurality of overlapping coherent processing interval (CPI) data sequences;performing Fast Fourier Transform (FFT) processing on said overlapping CPI data sequences to provide transformed data sequences;performing range-sample CPI processing on said transformed data sequences; andperforming noncoherent integration (NCI) processing on output data from said range-sample CPI processed data sequences over a range trajectory in accordance with a hypothesized range rate to provide noncoherent gain-enhanced output data, wherein a hypothesized range-rate-based range trajectory is updated at a compensation rate no more often than once per PDI interval.