Satellite locating error processing method based on map matching

Abstract

GPS is utilized to measure the four points not arranged in same line within the location area to obtain the actual measured values, which are compared with the latitude and longitude values of the corresponding points on the vector map. Thus, the transverse and longitudinal deviations of the positioning accuracy are obtained. The correction is carried out to eliminate the GPS positioning system error and the manual error in making the vector map effectively. The method does not need the equipment of communication system to transfer the difference positioning information so as to reduce the intermedium steps and lower the cost, providing the features of fast speed, high accuracy and possessing the obvious economical and social benefit.

Description

technical field

[0001] The invention belongs to the technical field of satellite positioning measurement, and relates to a satellite positioning error processing method based on map matching. Background technique

[0002] The Global Satellite Positioning System (GPS) is a global, omnipotent (land, ocean, aviation and aerospace), all-weather advantaged navigation, positioning, timing, and speed measurement system developed by the U.S. military in the early 1970s in the "meridian satellite navigation and positioning" technology. , consists of three subsystems: space satellite positioning system, ground monitoring system and user receiving system. Has been widely used in many fields such as military and civilian. In developed countries, GPS technology has begun to be used in transportation and road engineering. The car navigation monitoring system is a new technology developed on the basis of GPS. It consists of GPS navigation, autonomous navigation, microprocessor, vehicle ...

Images