Simulation and Analysis of Integrated Error of Time-Differential Positioning of Three Stations in Space
The planar three-station time-difference positioning technique has been widely used in many fields due to its advantage of passive positioning.However,this technique is affected by systematic and random errors in practical applications,in which the systematic errors mainly originate from the inaccuracy of the base station deployment and the assumption of the signal propagation model that is not in accordance with the actual situation,while the random errors are caused by the unpredictable factors such as the noise and the environmental interference in the signal propagation process.In this paper,the planar three-station time-differential positioning error model is firstly given,and the three-station spatial time-differential positioning systematic error is further analysed,the spatial three-station time-differential positioning error model is established,and finally the results of the comparison of positioning accuracy curves are given.
passive positioningtime lagposition accuracyerror model
NETL
NSTL
万方数据
