基于激光的巡航导弹地形匹配关键技术研究

Key technologies of terrain matching guidance for cruise missiles based on the laser survey

为解决巡航导弹上的雷达高度表探测精度不高,易受电子干扰影响而失效,且在平原、沙漠地区及海面失效的问题,研究采用激光测高/测深技术设计新型巡航导弹地形匹配导航系统,利用激光探测技术的优点来提高地形测量精度和抗电磁干扰能力。采用红外/蓝绿双波长输出激光高度计方案使得巡航导弹可利用海底地形进行辅助导航,探讨了几项关键技术:包括激光器结构、探测器及光学系统设计、数字化地物目标反射的激光回波脉冲并从中提取有效波形识别特征参数方法及地形匹配算法。

Radar altimeter equipped for cruise missile has some shortcomings.It has low detection precision.It′s prone to be influenced by electronic interference.It can′t work in the plain and desert region as well as over the sea.In order to solve these problems,a new terrain matching guidance system is studied based on the technology of laser altimetry and bathymetry.The system can increase the detection precision and improve the capability of anti-electromagnetic interference.A kind of laser altimeter scheme outputting IR/GR double wavelength laser is adopted to guide cruise missile over the sea.Some key technologies are discussed,which includes the structure of laser,the design of detector and optical system,the way of digitalizing the echo pulses and the terrain matching algorithms.