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THE PERFORMANCE OF SEVERAL INCOHERENT SEQUENTIAL DETECTORS,
RAND CORP SANTA MONICA CALIF
Pagination or Media Count:
An evaluation of the performance of several sequential detectors for the case of incoherent detection that is, when the pulse-to-pulse radar returns are independent observations on the envelope of a sine wave in narrow-band Gaussian noise. Two sequential probability ratio tests SPRTs and the biased square law sequential detector BSLSD were compared for blipscan ratio and average test time for static and fluctuating targets at known range. The SPRT for Swerlings Model II fluctuating target is the preferred sequential test it gives a 4 to 7 db improvement over the optimum fixed-duration tests. Walds approximations for SPRT evaluation were compared with the exact results and found to be inadequate for large signalnoise ratios. The APRST and MPRST averaged and maximum probability ratio sequential tests were evaluated and compared with optimum fixed-duration tests for unknown range conditions multiple range resolution cells. Author
APPROVED FOR PUBLIC RELEASE