초록 ▼

A means for identifying a particular range and Doppler shift signal in the field of view of a moving radar antenna which determines azimuth angle to this range-Doppler signal relative to the antenna by determining the phase difference between said signal as processed through two channels each fed by

A means for identifying a particular range and Doppler shift signal in the field of view of a moving radar antenna which determines azimuth angle to this range-Doppler signal relative to the antenna by determining the phase difference between said signal as processed through two channels each fed by antennas displaced in a horizontal direction with respect to the axis of the antenna system.

대표청구항 ▼

[ What is claimed is:] [1.] A system in which microwave pulses of two distinct types are received through a single pair of spatially separated antennas, uniquely processed according to type for purposes of interference reduction, and then individually phase compared channel to channel so as to deter

[ What is claimed is:] [1.] A system in which microwave pulses of two distinct types are received through a single pair of spatially separated antennas, uniquely processed according to type for purposes of interference reduction, and then individually phase compared channel to channel so as to determine angular bearings whose difference, by virtue of common-mode error rejection, is a precise measure of the relative angular separation between a mobile cooperative transponder and radar ground reflectors which are the respective sources of the pulses of two distinct types, said system comprising:two horizontally spaced antennas to receive said microwave pulses of two distinct types to provide signals having a significant phase shift from one of the antennas with respect to the other for pulses at an angle to the bore sight of the antennas;means to process said pulses said means isolating a phase difference for returns from said ground reflector and isolating a phase difference for signals from said transponder that are due to the angle between the antenna boresight and signal location; andmeans to compare the phase difference of the return and the signal to provide an azimuth error signal of the return and signal respective positions remote of the system.