无线电／激光高度表复合测高技术研究

无线电高度表和激光高度表是巡航导弹上用于探测地形高度的2种主要传感器，激光高度表具有探测精度高、抗电磁干扰能力强的优点；而无线电高度表不受天气和环境的影响，可全天候使用。因而，将无线电高度表与激光高度表进行复合探测，有利于提高地形探测精度，并增强系统抗干扰能力。在高度表测量方程的基础上，基于卡尔曼滤波公式和简单融合算法，给出了无线电／激光多传感器的滤波及融合模型；并利用M atlab对多传感器融合效果进行了仿真。仿真结果表明：基于多传感器融合的高度测量系统的精度比单个传感器的测量精度要高，且系统的稳定性和可靠性更强，所设计的基于无线电／激光高度表多传感器数据融合的高度测量算法是有效的。

Research into Composite Altimetry Technology Based on Radio/Laser Altimeter

Radio altimeter and laser altimeter are two main sensors which is applied to detect terrain altitude of the cruise missiles .Laser altimeter has high detection precision ,strong anti-electromag-netism-jamming ability .However radio altimeter can work under the condition of all-weather , which is immune for weather and environment .Detection system combining radio altimeter with la-ser altimeter can improve terrain detection precision and anti-jamming ability .On the basis of altim-eter measuring equation ,this paper presents radio/laser multi-sensor filtering model and fusion model based on Kalman filtering formula and simple fusion arithmetic ;simulates the fusion effect of multi-sensor by means of Matlab .The simulation results show that the altimetry system based on multi-sensor fusion has higher detection precision than single sensor ,and has good stability and re-liability ,the multi-sensor data fusion altimetry arithmetic based on radio altimeter/laser is effec-tive .