智能雷弹弹目交会及其时延估计  

MISSILE CONTACT WITH AIM AND TIME DELAY ESTIMATION IN SMART MINE

作　　者：吴喜录[1] 陈庆生[1] 程翔[1] 张元[1] 

机构地区：[1]南京理工大学机械学院

出　　处：《弹道学报》1997年第3期40-43,,47,,共5页Journal of Ballistics

摘　　要：为提高反直升机雷弹的毁伤概率，必须研究雷弹飞行弹道与直升机飞行轨迹的交会问题，根据直升机的飞行航线、高度和速度以及雷弹的初速，确定雷弹发射的方位角、俯仰角以及时间提前量．该文详细讨论了反直升机智能雷弹的飞行弹道及其工作原理，对地面声传感器的接收信号进行了频谱分析与相关分析，采用了自适应时延估计技术对直升机目标进行定位．分析表明，地面声传感器的接收信号是高度相关的，在待估计的时延范围内，互相关函数具有单一最大值，利用均方误差最小准则和最速下降梯度技术的递归算法能够精确地估计时延，计算结果也表明，该自适应系统能够快速有效地跟踪时延随时间的变化．In order to increase kill probability of antihelicopters' mines, we must study the trajectories of mines. The angles and time of mines launched is determined by the trajectory, height and velocity of helicopters. In this paper, the trajectory of antihelicopter's mines and its function principle is detailed, spectrum estimation and correlation analysis of microphones' signals are done, and an adaptive algorithm was developed for estimation of time delay. The analysis shows that the signals received by microphone are highly correlated and have a unimodal crosscorrelation function, and that it is possible to esimate time delay by LMS error function and gradient technique. The adaptive delay is shown to perform correctily in a time delay estimating and tracking application.

关 键 词：智能雷弹 时延估计 信号处理 弹目交会 地雷 

分 类 号：TJ512[兵器科学与技术—军事化学与烟火技术]