Adaptive Calculation of Pulse Compression Filter Coefficients for a Radar Signal

摘要

In a method for adaptive calculation of pulse compression filter coefficients for a received signal in a radar installation, which received signal is evaluated with the aid of a complex pulse compression mismatch filter, a pulse compression filter coefficient set h(t) is calculated for an ideal theoretical received signal s(t) for a pulse compression mismatch filter, such that a pulse compression output signal results with a desired main lobe to side lobe ratio. A transformed set of pulse compression filter coefficients H_opt(f) for the complex pulse compression mismatch filter H_opt(f) is calculated for a distorted received signal using the following rule:; $$ H_{\mathrm{opt}}\left(f\right)=\frac{S\left(f\right)·H\left(f\right)·S_v^{*}\left(f\right)}{{S_v\left(f\right)}^2}$$ ;whereS(f): the Fourier-transform of an undistorted received signal s(t),S_v(f): the Fourier-transform of a distorted received signal s_v(t),s_v*(f): the complex conjugate of S_v(f),H(f): the Fourier-transform of the pulse compression mismatch filter h(t).