线阵数字波束形成技术

Linear Array Digital Beam Forming Technology

在自适应数字波束形成应用于抗干扰之前通常采用低副瓣技术克服干扰对接收机性能的影响,常用的低副瓣方法有幅度加权和唯相位加权。唯相位加权降副瓣方法的工程实现比较容易,通过控制移相器即可实现。研究了唯相位降副瓣的方法,并给出了仿真结果,然后在此基础上进行了自适应数字波束形成。仿真结果表明低副瓣和自适应数字波束形成相结合可以达到很好的抗干扰效果。

The low side lobe technology is usually used to overcome the influences of jamming on the receiver performance before the adaptive digital beam forming is used to antagonize the jamming. The common low side lobe methods include the amplitude weighting and phase-only weighting. The engineering realization of the method using phase-only weighting to decrease the side lobe is easy, it can be realized by controlling the phase shifter. This paper studies the method to decrease the side lobe by the phase-only weighting method,and presents the simulation result,then on the base of it, performs the adaptive digital beam forming. The simulation result indicates that the combination between the low side lobe and the adaptive digital beam forming can achieve perfect anti-jam-ming effect.