一种基于三角基线干涉仪的天基定位技术

A Space-Based Positioning Technology Based on Triangular Baseline Interferometer

测向定位是一种计算量小、成熟度高的定位技术,常用于干涉仪等测向系统。测向定位传统采用二维正交基线测量目标入射方位角和俯仰角,通过计算方位角、俯仰角锥面与地球曲面交点完成定位计算。提出了一种基于三角基线干涉仪的天基定位技术,充分利用不同基线测向精度差异与锥面交线的构型特征,使测向精度与锥面交线构型更好地匹配,从而实现更高的定位精度。最后通过仿真验证了该方法的可行性和有效性。

Direction finding is a kind of positioning technology with low computational complexity and high maturity.It is often used in direction finding systems such as interferometer.Traditionally,two-dimensional orthogonal baseline is used to measure the incident azimuth and pitch angle of the target,and the positioning calculation is completed by calculating the intersection of the azimuth and pitch angle cone and the earth s surface.A space-based positioning technology based on triangular baseline interferometer is proposed,which makes full use of the difference of direction-finding accuracy between different baselines and the configuration characteristics of the cone intersection line,so as to better match the direction-finding accuracy with the cone intersection line configuration,and achieve higher positioning accuracy.The feasibility and effectiveness of this method are verified by simulation results.