高射频连发测速弹丸信号识别算法

Algorithm Recognizing for High-Frequency Continuous Firing Projectile Signals for Velocity Measurement

针对高射频连发射击状态下连续冲击波和弹丸激波对连发弹丸过幕信号严重干扰的问题,提出了一种连发弹丸信号识别算法.通过对连发射击弹形信号和干扰信号的特征分析,结合信号时间宽度、幅值识别阈值以及预定弹丸速度和连发射频等参数,设计了疑似弹形信号识别算法、射频约定准则滤波算法、速度约定准则滤波算法以及过幕时间约定准则滤波算法.实弹射击结果表明:该算法能有效滤除连发射击的冲击波和激波干扰信号,快速识别出连发射击的弹丸信号.

There are projectiles’signals,continuous impact waves cause serious interference with the projectiles’signals when continuous projectiles with high firing frequency fly through the detecting screens.To solve this problem,an algorithm for recognizing continuous projectiles is proposed in this paper.Based on the analsis of the characteristics of the projectiles’signals and the interference signals,and integrated with the important parameters such as signal time width,the signal recognition threshold,the predetermined projectile velocity and continuous firing frequency.The four algorithms were developed including projectile-shape signal recognition,continuous firing frequency filtering,velocity filtering and continuous firing time convention.The test results show that the algorithms can effectively filter the interference signals,and quickly identify the projectile-shape signals of the continuous firing projectiles.