恒虚警处理在连发火炮多目标检测中的应用

Application of continuous-emission artillery multi-target detection in CFAR processing

针对连发火炮的复杂多目标环境,传统的单元平均恒虚警处理方法不能满足信号检测的要求。为了充分利用目标的运动信息,通过距离-多普勒二维恒虚警方法估计背景噪声,采用修正的单元平均恒虚警处理剔除目标之间的相互干扰,并结合双门限检测对连发火炮多目标回波进一步处理,引入动态阈值增强检测的鲁棒性。工程实践表明,该方法提高了回波信号的信噪比和信杂比,有效地实现了连发火炮多目标的检测,为下一步目标参数提取提供基础。

For the complex multi-target environment of continuous-emission artillery, the CA-CFAR processing method can＇t meet the requirement of signal detection. In order to make full use of the moving information of the target, the distance-Doppler two-dimensional CFAR method is used to estimate the background noise. The modified CA-CFAR processing is adopted to eliminate the mutual interference among the targets. The dual-threshold detection is combined to further process the multi-target echo of continuous-emission artillery. The dynamic threshold is introduced to enhance the detection robustness. The engineering practice result shows that the method can improve the signal-to-noise ratio and signal-to-clutter ratio of the echo signal, realize the continuous-emission artillery multi-target detection effectively, and provide the basis for the target parameter extraction of next step.