RANGE TRACKER UTILIZING SPECTRAL ANALYSIS

摘要

RANGE TRACKER UTILIZING SPECTRAL ANALYSIS A radar system transmits a signal to a target wherein the frequency is modulated with a sinusoidal modulation pattern. The difference between the actual target range and an estimate thereof is subjected to a spectral analysis wherein the spectral terms are described by Bessel functions. A second order range tracking loop, responsive to the relative magnitudes of the spectral terms, and an estimator of target radial acceleration, responsive to successive values of the spectral terms, provide components of the range estimate.