摘要
采用前侧视工作方式并选用聚束式高分辨成像模式的SAR成像制导导弹,应控制天线波束的指向使其较长时间照射目标区,等效地增加合成孔径的长度。因此必须合理选择制导律使前侧视条件成立,确保速度矢量与视线间有足够的夹角。为此,提出了导弹航向采用固定前置角导引律的方案,推导了利用导引头框架角信息实现的固定前置角导引算法并给出其工程实现形式;建立了导弹航向攻击平面制导系统数学模型并进行了数字仿真,验证了方案的合理性和可行性。
For SAR image guidance using squint mode and spotlight high-resolution imaging mode, the antenna of seeker should be pointed to the aim for specific period of time. Guidance law must be studied to ensure adequate angle margin between velocity vector and line of sight. A scheme of using heading angle guidance law in lateral profile is proposed. A heading angle guidance law derived from frame angle of the seeker is presented. The guidance law is easy to apply, and the simulation results indicate that this scheme meets requirements of the spotlight high-resolution imaging.
出处
《测控技术》
CSCD
北大核心
2009年第9期69-71,76,共4页
Measurement & Control Technology
关键词
合成孔径雷达导引头
成像制导
固定前置角制导律
聚束式高分辨成像
synthetic aperture radar seeker
imaging guidance
heading angle guidance law
spotlight high-resolution imaging
