太赫兹科学与电子信息学报2025，Vol.23Issue(6)：604-609,6.DOI:10.11805/TKYDA2024171
单星双DOA干扰源定位性能分析
Analysis of single satellite dual-DOA positioning performance
摘要
Abstract
With the development of Low-Earth Orbit(LEO)satellite systems,satellite-borne phased array antennas have been applied in satellite systems,providing the conditions for phased array measurement of the Direction of Arrival(DOA)of satellite-borne electromagnetic waves.In the current satellite direction-finding and positioning systems,the single-DOA positioning system is unable to locate aerial targets,and the dual-satellite Time Difference of Arrival(TDOA)and DOA joint positioning system requires synchronized measurement and calculation by two satellites with simultaneous visibility of the target to achieve positioning.To address these issues,a positioning method based on single-satellite dual-DOA is proposed.The principle and algorithm of single-satellite dual-DOA positioning are analyzed.Through simulation,the quantitative impact of different satellite intervals,direction-finding errors,and satellite position errors on the positioning accuracy of satellites is calculated.The Geometric Dilution of Precision(GDOP)of this positioning system is derived,and its feasibility is verified through simulation.关键词
干扰源定位/波达方向(DOA)/几何精度因子(GDOP)/低轨(LEO)Key words
interference source localization/Direction of Arrival(DOA)/Geometric Dilution of Precision(GDOP)/Low Earth Orbit(LEO)分类
信息技术与安全科学引用本文复制引用
王淳,屈德新,张更新..单星双DOA干扰源定位性能分析[J].太赫兹科学与电子信息学报,2025,23(6):604-609,6.基金项目
国家自然科学基金资助项目(U21A20450) （U21A20450）
