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Network RTK medium-long baseline ambiguity fixing method and platform

A technology of fixed ambiguity and ambiguity, which is applied in the field of satellite navigation, and can solve the problems of poor fixed rate of baseline ambiguity values ​​between reference stations, difficulty in obtaining floating point values, and low reliability

Active Publication Date: 2020-07-07
北京六分科技有限公司
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Problems solved by technology

[0004] However, the above method requires smoothing of multiple epochs to obtain a relatively stable floating-point value. If the quality of the original data collected by the receiver is poor, it is difficult to obtain a stable floating-point value even after smoothing through multiple epochs. As a result, the fixation rate of the ambiguity value on the baseline between the reference stations is poor, and the reliability is low

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  • Network RTK medium-long baseline ambiguity fixing method and platform
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  • Network RTK medium-long baseline ambiguity fixing method and platform

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[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances ...

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Abstract

The invention provides a network RTK medium-long baseline ambiguity fixing method and platform, and the method comprises the following steps: obtaining a double-frequency pseudo-range observation value and double-frequency carrier phase observation data transmitted by a reference station; obtaining a floating point solution of double-difference wide lane combination ambiguity according to the double-frequency pseudo-range observation value and the double-frequency carrier phase observation data; obtaining a fixed solution corresponding to the floating point solution of the double-difference wide lane combination ambiguity according to a data optimization algorithm; and obtaining a fixed solution corresponding to the floating point solution of the single-frequency ambiguity according to thefixed solution corresponding to the floating point solution of the double-difference wide lane combination ambiguity. Therefore, the fixation rate and the reliability of the medium-long baseline ambiguity are improved.

Description

technical field [0001] The invention relates to the technical field of satellite navigation, in particular to a method and platform for fixing long baseline ambiguity in network RTK. Background technique [0002] Network carrier phase difference technology (Real Time Kinematic, RTK) refers to the uniform establishment of multiple Global Positioning System (Global Positioning System, GPS) reference stations in a certain area to achieve mesh coverage of the area. During positioning, one or more reference stations are used as references to calculate the correction item information of the positioning data in real time, and finally release the calculated correction item information to the user in real time through the communication link, so that the user terminal can obtain high-quality data. Accurate real-time positioning results. In network RTK, solving the ambiguity values ​​on the baseline between each reference station is a very critical step, which directly determines the ...

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Application Information

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IPC IPC(8): G01S19/44
CPCG01S19/44
Inventor 韩宗凯陈猛张金铎
Owner 北京六分科技有限公司
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