为解决多站定位技术要求观测站间高精度时间同步的问题,提出一种基于误差校正的多站定位新方法。位置精确已知的观测站,接收多个位置粗略已知的目标转发的信号后对自身定位,目的是由定位结果误差反推出目标的位置偏差并进行修正,逼近目标的真实位置。该方法可以对多个目标同时定位,且系统在同一时钟源下工作,无需传统方法的观测站间高精度同步要求。

To solve high-precision synchronization problem in multi-station location, a new method which locates target based on error correction was proposed. The system consists of multiple ground stations with precisely known location. Every station receives the signal from target and computes its location according to time difference of arrival. The inaccurate coordinate information and measurement distance error will result in difference between computer coordinate and real coordinate, which can be used to amend the location of targets. The proposed method can track multiple targets simultaneously. The system operates with one clock source, which relieves the limitation that multiple stations should synchronize with high accuracy.