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Partial solution location method in condition of failure of total solution

A positioning method and partial solution technology, applied in the field of satellite navigation and positioning, can solve the problems of low efficiency of partial solution

Active Publication Date: 2017-09-08
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Partial solutions are easier and more reliable than full solutions, but partial solutions are less efficient to solve

Method used

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  • Partial solution location method in condition of failure of total solution
  • Partial solution location method in condition of failure of total solution
  • Partial solution location method in condition of failure of total solution

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[0036] A kind of typical example of the present invention a kind of ambiguity partial solution selection and validity checking method, comprise the following steps:

[0037] Construct the carrier phase observation equation and error equation, calculate the integer ambiguity floating-point solution, and use the search method to obtain the integer ambiguity candidate combination;

[0038] Selecting some integer ambiguity candidate combinations according to the integer ambiguity candidate combinations;

[0039] performing a validity test on the partial integer ambiguity candidate combinations;

[0040] Select the common part of the partial integer ambiguity candidate combinations that pass the validity test as the partial integer ambiguity solution; calculate the coordinates corresponding to the partial ambiguity solution to realize the localization of the partial solution.

[0041] The selection steps of partial solutions are as follows:

[0042] Arrange the whole week ambigui...

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Abstract

The present invention relates to a partial solution location method in a condition of failure of a total solution. The method comprises: constructing a carrier wave phase observation equation and an error equation, calculating and obtaining an integer ambiguity float solution, and employing a search method to obtain the candidate combination of the integer ambiguity; selecting part of the candidate combination of the integer ambiguity according to the candidate combination of the integer ambiguity; performing validity checking of the part of the candidate combination of the integer ambiguity; selecting the part of the candidate combination of the integer ambiguity through the validity checking as the partial solution of the integer ambiguity; and calculating the coordinates corresponding to the part of the ambiguity solution to realize location of the partial solution.

Description

technical field [0001] The invention belongs to the field of satellite navigation and positioning, in particular to a partial solution positioning method under the failure of all solutions. Background technique [0002] With the development of the economy, the engineering and navigation fields have higher requirements for positioning accuracy and speed. In the Global Navigation Satellite System (GNSS), the basic observations include pseudorange, carrier phase and Doppler observations. Compared with pseudo-range positioning, positioning using carrier phase observations has higher positioning accuracy, but there is a problem of whole cycle counting. Since the carrier signal is not marked, it is unknown how many weeks the signal has experienced from the moment of transmission to the moment of reception when it reaches the receiver, that is, the problem of ambiguity of the entire cycle. [0003] If you want to achieve fast positioning or improve the accuracy of positioning res...

Claims

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Application Information

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IPC IPC(8): G01S19/37
CPCG01S19/37
Inventor 姬生月
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)