基于方向余弦的交会方法

在多台光电经纬仪组成的测量网络中,为了快速得 到目标的空间位置信息,提出了一种基于方向余弦的交会方法。本文方法根据光电经纬仪实 时跟踪被测目标时的几何关系,利用光电经纬仪的站点位置和实时获得的测角信息,对每台 光电经纬仪都构建两个方向余弦,利用加权算法实时估计出被测目标的空间三维坐标。试验 结果表明,对于近距离的空间目标,与雷达的测量数据相比,本文方法得到的目标位置数据 平滑、无波动,二者的定位误差均小于0.5m,能满足目标高精度的 定位要求。

Intersection method based on the direction cosine

In the measurement network composed of two or more electro-optic theodolites,to acquire the spatial position of the t arget quickly,an intersection approach based on the direction cosine is put forw ard is this paper.According to the real-time geometrical relationship between t he measured ob ject and the electro-optic theodolites,this method makes use of the theodolites positions and their real-time angle information of the measured object to cons t ruct the direction cosine for every theodolite.The coordinates of the measured o bject are estimated by using the weighted algorithm.The results show that compar e d with the real-time measured data from the radar,the coordinates produced by t his method are smooth and unfluctuating during tracking close range objects,the posi ti on error of the two kinds of devices is less than 0.5m,so this method can meet the needs of the high-precision positioning.