Abstract:

The angle measurement method with digital monopulse for 2dimensional digital array radar is studied. The problems in the process of digital monopulse measurement are analyzed and an improved angle measurement method with digital monopulse is proposed. The variations of equivalent aperture of antenna array with different frequencies and different beam positions are taken into account in the process of difference patterns synthesis. A multiorder polynomial fitting method is adopted to calculate the target’s angle according to the angle error signal whose characteristic is nonlinear. The detailed process of angle measurement method with digital monopulse for digital array radar is given. The simulation results and the actual measurements show that the method has a good performance in angle estimate. Because of the less memory needed by the error curves, the method is suitable for the project.