基于GPS定位和伪码测距的子母弹子弹引信测高算法

Height Finding Algorithm for Submunition Fuze of Cluster Munition Based on GPS Positioning and Pseudo-Code Ranging

为满足子母弹子弹引信的定高起爆需求,提出了一种准确测定子弹空中高度的技术方法.基于无线电导航原理,利用信标子弹作为地面基站,使功能子弹依靠信标子弹发射的定位信号实时测定距离地面的高度,实现炸高的有效控制.建立了子弹测高数学模型,提出了快速数值解法,讨论了主要的误差来源.结果表明,该测高方法准确度高,测高相对误差在5%以内,能满足子弹引信体积、功耗、成本等方面的要求.

A new kind of height finding method based on the principle of radio navigation was proposed in order to meet the requirement of submunition altimeter fuze. The functional submunitions measure the height instantly depending on the locating signal sent off by beacon submunitions on the ground, and the burst height can be controlled effectively. The height finding model for submunition was established, and a rapid numerical solution was provided. The main error sources were discussed. The result shows that this method can achieve high accuracy with the relative error of height finding below 5%, and meet the size, power consumption, cost and other requirements of submunition fuze.