Earticle

In order to give full play to ability of existing devices, the combined positioning algorithm of volume image sequence is proposed, which is applied in large scale topographical map. Firstly, the observation equations of observable image sequence are analyzed, and the five different coordinates relating with space 3D coordinate of object can be calculated. Secondly, the combining positioning algorithm based the characteristics of hyperbolic curve and Kalman filter is put forward and the corresponding mathematical model is constructed. Finally, the dynamic measured data of a highway is used as basis, the corresponding simulation analysis is carried out, and results show that the new combined positioning algorithm can improve the precision of mobile measurement system effectively.