Distant-range high-precision real-time/fast positioning method and system based on GNSS

Abstract

The invention discloses a position fixing navigation system (PFNS) based on a GNSS satellite and a method thereof, wherein, the method comprises the following steps: a sparse continuous service satellite positioning datum station network is established at a positioning area or the periphery of the area, the datum station carries out continuous high sampling rate observation and transmits observed data to a system center by a communication link; then, the system center processes the data provided by the datum station network to obtain high-precision real-time relevant system error correcting information; finally, the relevant system error of the user is interpolated / extrapolated according to the relevant error of the datum station network, and relevant correction and processing are carried out, thus obtaining the accurate three-dimension coordinate of the user. The invention has the advantages of high positioning precision, wide coverage area and convenient use, etc., thus being suitable for high-precision and real-time / rapid positioning application under special circumferences.

Description

GNSS-based long-distance high-precision real-time / fast positioning method and system technical field The invention relates to the technical field of navigation and positioning by using satellites, in particular to a method and system for realizing long-distance and high-precision real-time / rapid positioning by using a global navigation satellite system. Background technique Global satellite positioning technology is a high-tech modern positioning method using Global Navigation Satellite Systems (GNSS), which has global, all-weather, continuous, accurate and real-time navigation, positioning, and timing functions. It brings great convenience to departments or industries such as surveying and mapping, water conservancy, construction, agriculture and forestry, tourism, resource investigation and environmental monitoring. GNSS is a joint global positioning and navigation system composed of multiple compatible global positioning and navigation systems. The satellite positionin...

AI Technical Summary

Problems solved by technology

The technical problem to be solved by the present invention is to provide a GNSS-based long-distance high-precision real-time / fast positioning method and system, which is used to solve the problem that the network RTK and single-station differential technology in the prior art cannot simultaneously satisfy high-precision and long-distance positioning problems, to achieve long-distance high-precision fast positioning

Images