Patent ID: 6166680
Filing Date: 2000-12-26
Classification: F42C,G01S

Abstract:
In a range dependent time delay target detecting device for use in a guided missile, the combination comprising:(a) a short pulse radar for transmitting pulsed signals and receiving said transmitted signals reflected from targets of interest,(b) a ramp function generator having a first input coupled to said radar and being responsive to received signals passed by said radar to start the generating of a ramp function and having a second input coupled through a delay circuit to said radar and being responsive to delayed pulses from the transmitting section of said radar for stopping the generating of said ramp function,(c) a voltage comparator having a first input coupled to the output of said ramp function generator and a second input coupled to a reference voltage and generating an output signal when the output from said ramp function generator exceeds said reference voltage,(d) a peak voltage detector coupled to said ramp function generator for providing an output voltage inversely proportional to the range of the reflected signals,(e) a pulse generating circuit means coupled to said voltage comparator for generating a fixed width constant amplitude pulse in response to a detected target,(f) a time delay computer having a first input coupled to said peak detector, a second input coupled to said pulse generating circuit means and a third input coupled to receive a range-rate voltage from the missile and generating an output signal delayed in time determined by voltage from said peak detector and the range-rate voltage from the missile.