Detection and degradation of multiple closely spaced targets in a monopulse system

摘要

PROBLEM TO BE SOLVED: To provide a method which determines first and second azimuth angle values representing two closely spaced targets.;SOLUTION: In the method, monopulse radar scan data are produced by scanning with monopulse for two closely spaced targets in a monopulse system. By processing monopulse scan data, quadrature angle data, merged azimuth angle data, and a maximum absolute value of a quadrature angle are provided. The maximum absolute value of the quadrature angle is compared with a threshold value. First and second azimuth angle values are derived from an integration of quadrature angle data over an angular region within monopulse scan if the maximum absolute value of the quadrature angle exceeds the threshold value. The first and second azimuth angle values are derived by fitting the merged azimuth angle data to a polynomial as a function of a boresight angle of a monopulse radar if the maximum absolute value of the quadrature angle does not exceed the threshold value. The first and second azimuth angle values are displayed by a related display to a user.;COPYRIGHT: (C)2013,JPO&INPIT