Method based on NTRIP for measuring RTD of arbitrary coordinate system result

A technology of coordinate system and target coordinate system, applied in the field of geodetic surveying and satellite navigation, which can solve the problems of complex data processing, high user quality requirements, and lack of real-time performance.
CN103293541AInactive Publication Date: 2013-09-11WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
WUHAN UNIV
Publication Date
2013-09-11
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

A method based on NTRIP for measuring an RTD of an arbitrary coordinate system result carries out extension on a source node, is used for conveying moving station requests with details, does not need to modify NTRIP, and simply needs to add judgments and algorithms to NtripCaster software, or adds an NtripProxy relay module between NtripCaster and a moving station. A coordinate under a reference-ellipsoid-centric coordinate system needs to be acquired in real time, a corresponding source node simply needs to be selected when a server is logged in, and non-secret seven parameters are filled in a handhold notebook. If normal height needs to be acquired in real time, a corresponding source node simply needs to be selected when the server is logged in. If ECEF coordinate needs to be obtained in real time, a corresponding source node simply needs to be selected when the server is logged in. An operating mode is basically unchanged, under the premise that a privacy policy is met, the reference-ellipsoid-centric coordinate system and the normal height of real-time survey staking of the RTD can be achieved, and surveying and mapping production efficiency is remarkably improved.
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Description

technical field

[0001] The invention relates to the fields of geodetic surveying and satellite navigation, in particular to an RTD method for measuring results of an arbitrary coordinate system based on NTRIP. Background technique

[0002] RTD (Real Time Pseudorange Difference) is an application of GNSS (Global Navigation Satellite System). Its system consists of several reference stations and rover stations that are relatively close (usually less than 100km). The coordinates are known precisely. Since there is a strong error correlation between the pseudorange code observations received by the reference station and the rover at the same time, the pseudorange correction number and its change rate are sent from the reference station to the rover, and then the pseudorange differential positioning is performed. It can eliminate or weaken public satellite ephemeris errors, satellite clock errors, ionospheric errors, and tropospheric errors, and realize real-time positioning of ...

Claims

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