超低空引信截止距离压缩因子计算方法

A Method for Calculating Range Gate Compression Factors of Extreme Low Altitude Fuze

超低空引信采用距离波门压缩技术,利用下底天线测高结果进行目标支路距离波门压缩会造成引信检测概率损失。在考虑导弹姿态角(包括滚动角和俯仰角)情况下,推导了引信三个天线通道海面回波距离公式,从而得到了截止距离压缩因子与天线前倾角、导弹滚动角和俯仰角的关系,引信根据导弹姿态和测高结果进行截止距离调整,可提高引信检测概率。

The range gate compression method of ultralow altitude fuze utilizes the height result measured by bottom antenna to compress the range gate of detection branch, which may cause fuze detection probability loss. Considering the missile attitude angles including rolling angle and pitching angle, the equations of sea echo distance of three antennas are derived, thus the relation among antenna anteversion angle, missile rolling angle, missile pitching angle and range gate compression factors is obtained. The fuze compresses the range gate according to missile attitude angles and height measurement result, which raises the fuze detection probability.