通道均衡对自适应旁瓣相消性能影响的研究

Study on Influence of Channel Equalization to SLC Performance

由于通道之间幅相特性的不一致(通道失配),导致在自适应旁瓣相消(ASCL)系统中相消性能严重下降。通道均衡器是补偿通道失配的一种有效方法。文中在仿真分析通道失配对自适应旁瓣相消性能影响的基础上,研究了影响均衡性能的几个主要参数与旁瓣相消性能的关系。最后,通过仿真验证了通道均衡技术的引入可以较大幅度的提高旁瓣相消性能,所得结论对实际工程设计中实现中提高自适应旁瓣相消性能有一定指导意义。

Because of the difference in amplitude and phase between channels, the cancellation performance will usually degrade greatly in adaptive sidelobe cancellation （ ASLC ） system. The compensation can be achieved by means of a FIR equalizer. This paper deal with the relation between the performance of the equalizer as a function of a set of parameters and the cancellation performance, on the foundation of the channel mismatch influencing the performance of ASLC. Finally, it shows that the channel e- qualizing scheme can be used for improving the cancellation ratio effectively by computer simulation and performance analyses, and the results will guide improvement of the performance of ASLC in project application.