SPECTRAL CHARACTERISTICS OF SIGNALS FROM HIGH SPEED OBJECTS

摘要

A signal for the simultaneous detection and parameter estimation (range and doppler velocity) of high speed objects is analized. It consists of certain number SW pulses with different frequencies. Spectral characteristics such as bandwidth of spectra for echo-signals and reverberation, normalized standard deviation of signal and reverberation spectral amplitudes, correlation between spectral components of a signal, correlation between the such componennts of reverberation, echo-signal and reverbetation density functions of their spectral amplitudes are investigated. It has been shown, that the spectral amplitude distribution of signal and reverberation for the high-speed objects are similar and non-Rayleigh ones. The obtaining results made possible to improve the accuracy of signal parameter estimation with small detection loss as compared with hypothetical independent signal spectral component.