摘要
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。
In the measurement network composed of two or more electro-optic theodolites,to acquire the spatial position of the target quickly,an intersection approach based on the direction cosine is put forward is this paper.According to the real-time geometrical relationship between the measured object and the electro-optic theodolites,this method makes use of the theodolites positions and their real-time angle information of the measured object to construct the direction cosine for every theodolite.The coordinates of the measured object are estimated by using the weighted algorithm.The results show that compared with the real-time measured data from the radar,the coordinates produced by this method are smooth and unfluctuating during tracking close range objects,the position error of the two kinds of devices is less than0.5m,so this method can meet the needs of the high-precision positioning.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2017年第1期87-90,共4页
Journal of Optoelectronics·Laser
关键词
光电经纬仪
交会计算
方向余弦
量测
样条插值
极大似然估计(MLE)
伪线性估计(PLE)
electro-optic theodolite
intersection processing
direction cosine
measurement
spline interpolation
maximum likelihood estimator（MLE）
pseudolinear estimtor（PLE）
