MonoPulse Angle Measurement For An Airborne Side-Looking Phased Array PD Radar

For airborne phased-array radar, target angle measurement generally utilizes monopulse method in sum (Sigma) and difference (Delta) beams. This paper discusses a monopulse angle measurement method in Doppler-domain, which compares the Doppler filter output amplitude of Sigma channel with that of Delta channel, and gets the angle bias by finding the angle bias-table of Sigma channel and Delta channel. And then get the positive or negative of the bias by comparing the phase between Sigma channel and Delta channel. Practical results show the effectiveness of this method.