Patent ID: 6100845
Filing Date: 2000-08-08
Classification: G01S

Abstract:
An apparatus for determining from a moving observer the location of a radar signal from an emitter, comprising:a receiver for receiving the radar signal and measuring the pulse time-of-arrival (TOA), one of the pulse repetition frequency (PRF) or radio frequency (RF), and pulse width of the radar signal;an identification device for identifying the emitter based on the PRF or RF measurements, and for determining whether to use the PRF or RF measurements and for determining a dwell time for the receiver;a tune table including a predetermined set of instructions for predicting dwell time associated with a range of signal frequencies;a controller for directing said receiver to dwell at specific emitter signal frequencies in accordance with the instructions included in said tune table;a location processor using the PRF or RF measurements from said receiver and the dwell time from the identification device and computing the location of the emitter using a ratio of the frequency measurements.