As the modern electromagnetic environment becomes more complex, the demand for spatial multi-beamforming is growing. The digital array radar (DAR) exhibits advantages such as flexible waveform design and controllable multi-beam generation. However, in the complex battlefield environments, how to achieve deep null suppression against strong interferences, or implement null suppression in a certain width of the angle range while maintaining transmitting power is a challenging problem. In this paper, based on the digital array radar, the research work of its diverse multi-beamforming method is carried out. By constraining the weighted amplitude, the fluctuation characteristics of the weighted amplitude on each antenna are reduced, and higher transmission efficiency is obtained while maintaining performance.

digital array radar  /  spatial nulling  /  multi-beamforming  /  amplitude weighting