An Algorithm of Real-time Locating and Performance Analysis in a Photoelectric Theodolite-based Network

Based on the algorithms for 3-D locating of multi-photoelectric-theodo-lite network,an algorithm named OV(Orthogonal Vector) was presented to carry out real-time target positioning and the formula of the locating precision was deduced,and its performance was demonstrated.Through three photoelectric theodolites,the locating accuracies of the three algorithms were simulated and their geometrical dilution of precision was given by using Monte-Carlo method under different conditions,such as different station error,different coordinates,and different target trajectories.Finally the efficiencies of the three algorithms were comput in different amount of photoelectric theodolites.Simulation and computing results indicate that the algorithm can improve locating precision of netted photoelectric theodolites effectively,and is fast and stable,can meet the demands of high precision real-time positioning of moving target in netted tracking system of photoelectric theodolites.