子阵级数字阵列雷达波束形成性能分析

Beam-forming performance analysis of subarray digital array radar

子阵级数字阵列雷达应用越来越广泛,但实际应用中它的性能存在一定限制性,为了对其性能进行分析,先介绍了基于它的子阵划分的形式以及波束形成方法,然后对子阵级数字阵列雷达的多波束接收、宽带信号收发、通道幅相误差的影响进行了研究和分析。仿真结果表明:子阵级数字阵列雷达可以在一定角度范围内进行灵活的多波束接收,并收发一定带宽范围的宽带信号,极大地提高了雷达的空域搜索效率和抗干扰能力;为了让子阵级数字阵列雷达波束形成性能最优,必须对各通道进行幅相误差校正。

Sub-array digital array radar is more and more widely used,but its performance has some limitations in practical applications.In order to analyze its performance,the sub-array division based on its form and beamforming method are introduced.The effects of multi-beam reception,broadband signal transmission and reception,amplitude and phase error of channel have been studied and analyzed.The simulation results show that the sub-array digital array radar can perform flexible multi-beam reception within a certain range of angles,transmit and receive broadband signals in a certain bandwidth range,which greatly improves the radar′s airspace search efficiency and antijam ability.The amplitude and phase error of each channel must be corrected for the sub-array digital array radar have the best beamforming performance.