多普勒频移支持红外预警卫星反导作战研究

为拓展反导作战中红外预警卫星的目标速度估计方式,提出利用星载探测器进行被动红外多普勒频移测速的构想。首先建立多星多普勒频移测速模型,给出了多普勒频移测速误差与观测几何、辐射波长以及光谱分辨率的关系;然后推导多普勒频移测速误差与导弹发射坐标系下速度误差的坐标转换关系,描述了多普勒频移测速对弹道参数估计的贡献。最后,结合战术需求,通过仿真实例分析了多普勒频移测速对参数估计的影响。

Doppler shift based anti-ballistic missile operation of infrared early warning satellites

In order to expand the form of target velocity estimation in anti-ballistic missile operation for infrared early warning satellites, a hypothesis that velocity could be estimated passively by satellite-borne sensor based on Doppler shift is proposed. Firstly, the target velocity estimation model based on Doppler shift measured by multi-satellites is built and the relationship between velocity estimation accuracy and observation geometry, radiation wavelength and spectral resolution is given. Then the coordinate transformation between velocity error of Doppler shift measurement and that in launch coordinate system is derived. Furthermore, this paper discusses how Doppler shift contributes to trajectory parameters estimation. Finally, considering the tactical requirements, simulation results reveal the effect of velocity based on Doppler shift on tactical parameters estimation.