Network RTK real-time local benchmark service method

Abstract

The invention discloses a network RTK (Real-Time Kinematic) real-time local benchmark service method, which comprises the following steps of: 1, defining a group of server conversion parameters [T1, R1, s1] for a CORS (Continuous Operating Reference System) authorized user; the method comprises the following steps of: 1, establishing server software by adopting a network RTK information exchange format and protocol, and intercepting and processing a differential data stream of a user and VRS service software; 2, calculating user side conversion parameters [T3, R3 and s3] according to conversion parameters [T2, R2 and s2] from a CGCS2000 coordinate to a local independent coordinate; 3, constructing server software by adopting a network RTK information exchange format and protocol, and intercepting and processing a differential data stream of the user and the VRS service software; 4, configuring the user side conversion parameters [T3, R3 and s3] into an RTK handbook; and 5, a user is connected with the server through a standard NTRIP protocol, server software is constructed according to the protocol in the step 3 to obtain a differential data stream, and the RTK host can output a local independent coordinate system positioning result. According to the method, on the premise that the safety of coordinate conversion parameters is guaranteed, a user can obtain a real-time local independent coordinate system measurement result in real time by adopting mainstream RTK equipment, the compatibility is better, and the working efficiency is higher.

Description

technical field [0001] The invention relates to the technical field of surveying, mapping and positioning, in particular to a network RTK real-time local reference service method. Background technique [0002] In the existing technology, the continuous operation reference station system (CORS system) is an important geospatial infrastructure, based on the 2000 national geodetic coordinate system (China odetic coordinate system 2000, CGCS2000) to provide real-time, high-precision spatial reference services for urban construction and development. It has been widely used in electric power, water conservancy, marine and other fields. Due to historical reasons and the needs of urban construction, large and medium-sized cities have generally established local independent coordinates, and generally adopted local independent coordinate system results in urban planning, construction, operation, and management. However, due to the sensitive conversion parameters between CGCS2000 coord...

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Problems solved by technology

In this way, the coordinate conversion parameters do not need to be distributed to users, which is safe, but the conversion efficiency is low. The user needs a better network environment, and it also has higher requirements for the data center server and network bandwidth.

[0007] To sum up, method 1 needs to be customized by a professional company, which is expensive and takes a long time, and cannot be compatible with RTK equipment of mainstream manufacturers; method 2 needs to distribute coordinate conversion parameters to users, which has poor security; method 3 has low conversion efficiency and is harmful to data center servers and The client network environment has higher requirements

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