A Beidou ultra-wide lane ambiguity inspection and correction method

A technology of ambiguity and ultra-wide lane, applied in the field of global navigation satellite positioning, can solve the problems that the variance information of ambiguity floating-point solutions cannot be obtained, and the reliability of ambiguity is not applicable, etc.

Active Publication Date: 2021-09-14
XIAMEN UNIV OF TECH
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  • Claims
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Problems solved by technology

Especially in ultra-wide lane ambiguity resolution, unlike the least squares estimation, this method cannot obtain the variance information corresponding to the ambiguity floating-point solution. Therefore, the existing statistical testing methods are usually not applicable to test the reliability of ambiguity

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  • A Beidou ultra-wide lane ambiguity inspection and correction method
  • A Beidou ultra-wide lane ambiguity inspection and correction method
  • A Beidou ultra-wide lane ambiguity inspection and correction method

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Embodiment Construction

[0039] To further illustrate the various embodiments, the present invention is provided with accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with related descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are generally used to denote similar components.

[0040] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0041] A method for checking and correcting the ambiguity of a Beidou ultra-wide lane according to the present invention comprises the following steps:

[0042] (1) For the three frequencies f of the Beidou satellite n...

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Abstract

The invention discloses a method for checking and correcting the ambiguity in the process of solving the ambiguity of the Beidou ultra-wide lane in a single epoch. The method aims at the initial value of the ambiguity of the ultra-wide lane solved by the geometry-independent combination of the three frequency structures of the Beidou, and establishes the ambiguity Check the error equation, introduce gross error detection theory, and initially detect ambiguity error values ​​by constructing standardized residual statistics. The principle of minimizing the error in the weight is to realize the ambiguity inspection and correction of the ultra-wide lane under a single epoch.

Description

technical field [0001] The invention relates to the technical field of global navigation satellite positioning, and more particularly to a method for checking and correcting ambiguity in the single epoch resolution process of ambiguity of Beidou ultra-wide lane. Background technique [0002] In the application of global navigation satellite positioning technology, it is very important to accurately and quickly resolve the ambiguity of the whole circle, whether it is to shorten the observation time, ensure the positioning accuracy, or open up a new field of high-precision dynamic positioning applications. Since the ambiguity is an unknown integer, there is no objective truth value for reference in practical applications to test its accuracy, and the wrong ambiguity will directly prolong the initialization time of positioning and reduce the positioning accuracy. Therefore, the reliability of ambiguity Inspection is important and difficult, and has always been a hot spot of res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/44
CPCG01S19/44
Inventor 邓健江泽霖张静
Owner XIAMEN UNIV OF TECH
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