Beidou three-frequency signal carrier phase whole cycle ambiguity single epoch determining method

A technology of whole cycle ambiguity and carrier phase, which is applied in satellite radio beacon positioning systems, radio wave measurement systems, instruments, etc., and can solve the problems of low reliability, short baseline, and low ambiguity efficiency.
CN103675835AActive Publication Date: 2014-03-26SPACE STAR TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SPACE STAR TECH CO LTD
Publication Date
2014-03-26

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Abstract

The invention discloses a Beidou three-frequency signal carrier phase whole cycle ambiguity single epoch determining method. On the basis of the a geometry irrelevant model, the ambiguity of all the combinations are determined step by step through the matching of determination of a Beidou three-frequency combined model, the calculating of a three-frequency super wide combination ambiguity single epoch, the calculating of optimized wide item ambiguity, and the calculating of optimized narrow item ambiguity, and the calculating of the three-frequency signal ambiguity single epoch is completed. According to the method, on the aspect of the three-frequency ambiguity calculation, a LAMBDA method highest in ambiguity calculating success rate is adopted and is improved, so that the single epoch searching success rate is further improved. The method is higher in fixed ambiguity efficiency, and can be better applied in real-time dynamic environments.
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Description

technical field

[0001] The invention relates to a method for fixing a single epoch of ambiguity, in particular to a method for determining a single epoch of ambiguity for the entire circle of the Beidou tri-frequency signal carrier phase, which can be used for positioning in a satellite navigation system. Background technique

[0002] The RTK system can provide real-time centimeter-level positioning for end users, and the real-time and fast resolution of the ambiguity of the entire circumference of the reference station is one of the core key issues to ensure that the system achieves high-precision dynamics. At present, RTK technology has been popularized and applied. As the global satellite navigation system gradually enters a new era of multi-frequency and multi-system joint positioning, the single GPS RTK mode is gradually replaced by multi-frequency and multi-mode GNSS RTK. The invention realizes the method of fixing the ambiguity of the entire cycle in the single epoch ...

Claims

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