基于相位差变化率/时差联合的多站无源定位方法

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中图分类号： TN971+.5 文献标志码： A

Abstract：Aimed at the current demand for precise positioning and quick discovery of interference source，the positioning method of interference source based on the phase difference changing rate is proposed through focusing on the improvement of estimation accuracy for TDOA ，and the positioning performance of which is optimized by the combination of TDOA positioning method.The higher TDOA estimation precision is implemented equivalently through the estimation of phase diference changing rate without ambiguity in this method. The simulation results indicate that the proposed method based on the combination of phase difference changing rate and TDOA can improve the positioning accuracy for interference source effectively to narrow down the search scope for interference source.

Key words：passive localization； interference source; phase difference changing rate;TDOA

0 引言

随着卫星通信运行控制技术[1]、动态资源管理技术、预编码技术、频谱兼容技术4和物理层多播传输技术5等多种技术的快速发展和不断成熟，卫星通信系统的性能已经取得较为显著的提升，因其具备覆盖范围广[6、通信容量大[和传输质量好等优势，而成为传统地面通信系统的重要补充，用以满足不断增长的通信服务需求。（剩余4974字）