Double-frequency GPS receiver and CORS system

Abstract

The invention discloses a double-frequency GPS receiver which is arranged in a user application system of a CORS system. The CORS system comprises a data processing center and a plurality of reference stations. The double-frequency GPS receiver comprises a GPS module, a central processing module, a communication module and an output module, wherein the GPS module receives GPS satellite observation data sent by a GPS satellite to generate receiver positioning data, and transmits the receiver positioning data to the central processing module; the central processing module sends the receiver positioning data to the data processing center through the communication module; the data processing center generates difference information and feeds back the difference information to the communication module; the communication module sends the difference information to the GPS module through the central processing module; the GPS module calculates real-time positioning information according to the difference information and the GPS satellite observation data and sends the real-time positioning information to the central processing module; and the central processing module outputs the real-time positioning information to a control holding book through the output module. The data of the data processing center of the CORS system and the receiver can be transmitted more reliably and more quickly.

Description

technical field [0001] The invention relates to the technical field of GPS satellite positioning, in particular to a dual-frequency GPS receiver and a CORS system. Background technique [0002] With the rapid progress and popularization of GPS technology, GPS plays an increasingly important role in urban surveying. Currently, the Continuous Operational Reference System (abbreviated as CORS) established by using multi-base station network RTK technology has become one of the development hotspots of urban GPS applications. In the user application system of the CORS system, a dual-frequency GPS receiver is usually used. [0003] The traditional dual-frequency GPS receiver is a split structure, using data cables to connect GPS receiving antenna, GPS receiving host, control handbook, battery and other equipment. Since the measurement work is mainly in the field environment, most of the shrubs, forests, grasslands, wastelands, lakes, etc. with harsh environments, due to the use ...

AI Technical Summary

Problems solved by technology

Since the measurement work is mainly in the field environment, most of the shrubs, forests, grasslands, wastelands, lakes, etc. with harsh environments, due to the use of split and cables, greatly limit the convenience of construction surveyors' activities and increase the Possibility of instrument damage

Moreover, when the dual-frequency GPS receiver communicates with the data processing center in the CORS system for data transmission, the reliability and speed of data transmission are not ideal enough

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