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Fixed method for integer ambiguity

A technology of whole week ambiguity and fixed method, applied in the field of satellite navigation and positioning, which can solve the problem of Ratio value divergence and so on

Active Publication Date: 2021-05-04
ALLYSTAR TECH SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a method for fixing the ambiguity of the whole circle to solve the problem of the divergence of the Ratio value caused by the newly launched satellite

Method used

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Embodiment Construction

[0034] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of describing specific embodiments, and is not intended to limit the present invention.

[0036] see figure 1 , is a flow chart of the method for fixing the integer ambiguity ...

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Abstract

The invention relates to the field of satellite navigation and positioning, in particular to a method for fixing the ambiguity of the entire circumference. A method for fixing the integer ambiguity, the method comprising: obtaining the integer ambiguity and Ratio values ​​of all satellites in the current epoch; in response to the Ratio value being less than the preset Ratio value, re-acquiring the previous epoch Yuan Ratio value is stable, and the integer ambiguity and Ratio value of the satellite used in common with the current epoch; In response to the Ratio value after reacquisition is greater than the preset Ratio value, it is considered that the integer ambiguity has been fixed; obtain Fixed full week blur. In the present invention, when the Ratio value is less than the preset Ratio value, the fixed ambiguity of the unfixed satellite is obtained by reacquiring the Ratio value, so that the unfixed satellite ambiguity is relatively more accurate, and the time of convergence can be accelerated, so that When performing ambiguity resolution in the next epoch, the Ratio value will not diverge due to new satellites.

Description

technical field [0001] The invention relates to the field of satellite navigation and positioning, in particular to a method for fixing the ambiguity of the entire circumference. Background technique [0002] Global satellite navigation systems (GNSS), including GPS in the United States, GLONASS in Russia, Beidou in China, Galileo in Europe and QZSS in Japan, have been widely used in geodesy, aerospace, civil and military navigation, seismic exploration and other fields. The key to the high-precision positioning algorithm is the fixation of the carrier phase integer ambiguity. The discriminant standard of fixed ambiguity usually adopts the ratio value in the lambda method. When the ratio value is greater than a given threshold, the blurriness is considered correctly fixed. Therefore, how to obtain a higher ratio value becomes the key to designing a high-precision positioning algorithm. [0003] A key problem in the high-precision positioning algorithm is that when the rat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/44
CPCG01S19/44
Inventor 高星伟马元杜聪慧
Owner ALLYSTAR TECH SHENZHEN CO LTD