基于能量补偿的时域干扰抵消改善方法

针对时域干扰抵消方法产生的波束畸变和探测盲区问题,提出一种基于能量补偿的时域干扰抵消改善方法.该方法首先根据数据处理带宽和衰减曲线构造能量补偿因子;然后利用时域干扰抵消方法对线列阵拾取数据进行处理,得到相应波束;最后采用能量补偿因子对干扰抵消输出波束进行优化,可以减小波束畸变和探测盲区,达到预期的干扰抵消效果和探测效果.数值仿真和数据处理均表明,本文方法通过构造能量补偿因子改善了时域干扰抵消方法,降低了时域干扰抵消方法形成的"宽凹"或"凸"字型波束对目标探测性能的影响,实现了波束校正,减小了探测盲区,对原衰减区间内的目标实现了有效探测.从根本上解决了时域干扰抵消方法产生的波束畸变和探测盲区问题.

The Improvement Method of Interferences Suppression by the Energy Compensation in Time Domain

For the problem of beam distortion and detection blind zone by time domain interferences suppression method,a modified interferences suppression method by the energy compensation in time domain is proposed.Firstly,constructs energy compensation factor according to the frequency band of processing data and attenuation curve.Then,preprocesses the received data via time domain interferences suppression method,and obtains the output beam.Lastly,utilizes the energy compensation factor improve the output beam,reduces the beam distortion and detection blind zone,and achieves the expected results of interferences suppression and detection.The numerical simulation and data processing results show that,this method improves the time domain interferences suppression method by constructing energy compensation factor,reduces the impact of the "wide concave" or "convex" beam of time domain interferences suppression method on detecting target,achieves the beam correction,reduces detection blind zone,and achieves detecting the targets in old attenuation interval.That fundamentally solves the problem of beam distortion and detection blind zone by time domain interferences suppression method.