Phase integer ambiguity reliability checking method in GPS positioning technology

A GPS positioning and whole-week ambiguity technology, applied in the field of GPS positioning, can solve the problems of incomplete quadratic independence and non-compliance of ratios.

Inactive Publication Date: 2012-04-25
SOUTHEAST UNIV
View PDF2 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the second smallest and smallest residual quadratic models are not completely independent, their ratio does

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Phase integer ambiguity reliability checking method in GPS positioning technology
  • Phase integer ambiguity reliability checking method in GPS positioning technology
  • Phase integer ambiguity reliability checking method in GPS positioning technology

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0051] The method of the present invention is based on the mathematical statistical characteristics of the ambiguity solution. First, the stability of the floating-point solution is tested by the least squares parameter estimation maximum rate of change to ensure the statistical characteristics of the floating-point solution. On this basis, the variance post-test is adopted. Method to test the reliability of floating-point solutions; Secondly, by establishing the functional relationship between the ambiguity integer estimation failure rate and the Ratio test threshold, the Ratio test threshold is determined by using the given reliability index—the ambiguity integer estimation failure rate c , Finally, the traditional Ratio test method is used to achieve the reliability test of the integer ambiguity estimation. For the specific process, see figure 1 .

[0052] Example: This method is used in the reliability test of the ambiguity resolution between Tianjin CORS reference stations. T...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a phase integer ambiguity reliability checking method in a GPS positioning technology. Based on a mathematical statistic characteristic of an ambiguity resolution, examinations are performed successively to the reliability of an ambiguity floating point solution and an integer solution. The method is characterized by: firstly, examining floating point solution stability through a least square parameter valuation maximum variation rate so as to ensure the statistic characteristic of the floating point solution, on that basis, using a variance posteriori inspection method to examine the reliability of the floating point solution; secondly, based on an ambiguity success rate examination theory, establishing a function relation between an ambiguity integer valuation failure rate and a traditional ratio examination threshold c so that a given reliable index-the ratio examination threshold c determined by the ambiguity integer valuation failure rate is used and the traditional ratio examination threshold is easy to be determined; finally, through the ratio inspection method, realizing the reliability examination of the ambiguity integer valuation and obtaining anambiguity accuracy value.

Description

technical field [0001] The invention relates to a phase integer ambiguity reliability checking method in GPS positioning technology, belonging to the technical field of GPS positioning. Background technique [0002] The key to precise GPS positioning is the determination of phase integer ambiguity. Accurate and fast resolution of the ambiguity of the entire circumference is very important, whether it is to shorten the observation time, ensure the positioning accuracy, or to open up new fields of high-precision dynamic positioning applications. In practical applications, wrong ambiguity will directly prolong the initialization time of positioning and reduce positioning accuracy. Therefore, ambiguity reliability testing is an important content in ambiguity resolution. [0003] At present, the traditional ambiguity reliability inspection process can be summarized into three steps: first, the correctness inspection of the ambiguity floating-point solution; second, whether the d...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01S19/44
Inventor 潘树国王庆邓健
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap