Performance of Mismatched Receivers Against Range Spread Scatterers

摘要

This report examines the output signal-to-noise ratio of a complex correlation receiver for signals scattered from three types of range spread scattering functions: 1) the continuous scatterer, 2) The slowly fluctuating point scatterer, and 3) the composite scatterer, a scatterer with both a continuous scattering component and filter receiver has an integration time equal to the transmit signal length, However in the case of range or time spreading, this receiver is suboptimum. Increasing the receiver integration time beyond the length of the transmit pulse increases the receiver performance measured in terms of signal-to-noise. The output signal-to-noise ratio may be predicted analytically using simple scattering functions and transmit and receiver processing waveforms. This prediction is compared to simulated performance for fourteen combinations of scattering strength, and noise parameters are examined.