Abstract: The phase comparison monopulse radar measures angles by comparing the phase of the difference channel signals with the phase of the sum channel signal. It has been generally accepted that what the radar measures is not the directions of the target, but angular glint errors. Starting with a special two point target here, this paper analyzes the principle of means of phase comparison monopulse radar used to measure the angles, discusses the internal relation between angle measurements of phase comparison monopulse radar and angular glints, and puts forward new viewpoints about radar angle measurements.

Key words: angular glint, linear glint erro r, phase comparison monopulse radar, comp lex target