一种新的激光制导系统噪声处理方法

A New Method of Laser Guidance System Noise Processing

摘要:

为了提高激光导引头测角的精度与截获目标的命中率;针对噪声对激光制导系统的影响,在激光制导的原理上,采用了一种新的基于软件来处理噪声的DSP实时控制系统;首先,在控制电路上进行高低档实时测噪、动态控制门限;其次,基于MATLAB平台对其进行仿真计算得到噪声倍数表;最后,在DSP控制软件上通过查表的方式实现实时去噪的算法;结果表明,该方法大幅度提高了信噪比,从而提高了末制导系统航向与俯仰测角精度,最终提高了导弹目标命中率;通过实验室数据仿真和外场模拟试验,从未加去噪声处理和添加处理两方面进行对比仿真以及对结果的分析,验证了该方法的有效性、合理性以及可行性。

Abstract:

In order to improve the accuracy of laser seeker goniometry and intercepting the target shooting. Aiming at the effects of noise on the laser guidance system, on the principle of laser guidance, adopted a new DSP real-time control system based on software to deal with noise. First, the control circuit for high- low noise measured in real-time dynamic control threshold. Secondly, based on MATLAB simulation platform to get its noise multiple tables. Finally, the real-time control software on the DSP noise cancellation algorithm look-up table approach. The results show that this method greatly improves the signal to noise ratio, thereby enhancing the Terminal Guidance System heading and pitch angle measurement accuracy, and ultimately improve the missile hits the target . Through simulation laboratory data and field simulation test, two approaches:never add the noise process and add a handler to compare simulation and analysis of the results of two aspects, the validity of this method is reasonable and feasible.