单星综合孔径定位体制原理研究

Study on principle of single satellite integrated aperture positioning system

提出了一种基于综合孔径技术的单星测向定位体制,并对该体制的测向精度和灵敏度进行了分析,通过理论分析和仿真试验结果表明,该方法可以在保持高精度定位的同时提高系统灵敏度,从而有效降低天线阵列系统的复杂度。为目前单星干涉仪测向定位体制的多通道接收信号仅用于定位,无法有效合成提高灵敏度,导致系统规模较大的问题提供有效解决途径。

Based on synthetic aperture technique,a single satellite DOA location system is proposed,and its accuracy and sensitivity are analyzed.Theoretical analysis and simulation results show that this method can im-prove system sensitivity while maintaining high accuracy,thus effectively reducing the complexity of antenna ar-ray system.It provides an effective solution to the problem that the multi-channel received signals of the single star interferometer are only used for location and can not be synthesized effectively to improve the sensitivity,which leads to the large scale of the system.