NONCOHERENT GAIN ENHANCEMENT TECHNIQUE FOR IMPROVED DETECTION-ESTIMATION PERFORMANCE

摘要

A system and method of processing data in a sensor system which receives signal returns from pulsed coherent transmitted signals which are transmitted at a pulse repetition rate and with a pulse repetition interval (PRI). The method includes providing (202) range-filtered data in response to the received signal returns; formatting (204) successive sets of data received during a postdetection integration (PDI) interval into a plurality of overlapping coherent processing interval (CPI) data sequences; performing (212) FFT processing on the overlapping CPI data sequences to provide transformed data sequences; performing (214) range-sample CPI processing on the transformed data sequences; and performing (218) noncoherent integration (NCI) processing on output data from the range-sample CPI processed data sequences over a range trajectory in accordance with hypothesized radar-target range rate to provide noncoherent gain-enhanced output data. A range trajectory derived from a hypothesized radar-target range rate is updated at a compensation rate no more often than once per PDI interval.