Patent ID: 6133865
Filing Date: 2000-10-17
Classification: G01S

Abstract:
In an improved circuit for detecting and tracking continuous wave radar targets, the combination comprising:(a) antenna means for receiving continuous wave radar signals,(b) a sweep generator for generating a sawtooth wave signal,(c) local oscillator circuit means coupled to said sweep generator and producing an output signal varying linearly in frequency,(d) mixer circuit means coupled to said local oscillator circuit means and to said antenna means for producing an output IF signal that is a linearly frequency swept continuous wave,(e) a dispersive delay line coupled to said mixer circuit means for converting the swept frequency signal to a pulsed output signal,(f) detector circuit means coupled to the output of said dispersive delay line for providing video output pulses,(g) tracking circuit means coupled between said detector circuit means and said local oscillator for maintaining a target signal of a selected frequency at the output of said detector circuit means.