Calculating method for geometric accuracy factor minimum value of multi-mode receiver system layer

A geometric precision factor and calculation method technology, applied in the field of navigation, can solve the problem that traditional methods cannot calculate the minimum value of GDOP at the system level, and achieve the effect of simplifying the calculation process and improving calculation efficiency

Active Publication Date: 2018-11-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] The purpose of the present invention is: in order to solve the problem that the traditional method cannot calculate the minimum value of GDOP at the system layer due to the introduction of t...

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  • Calculating method for geometric accuracy factor minimum value of multi-mode receiver system layer

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[0035] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] Such as figure 1 As shown, it is a schematic flow chart of the method for calculating the minimum geometric precision factor of the multimode receiver system layer according to the present invention. A method for calculating the minimum geometric precision factor of a multimode receiver system layer, comprising the following steps:

[0037] A. Construct multi-mode receiver system layer design matrix H S ;

[0038] B. Calculate the correlation matrix and process it into blocks, and use the block matrix inversion method to Perform inverse, get Expressed as:

[0039]

[0040] C....

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Abstract

The invention discloses a calculating method for the geometric accuracy factor minimum value of a multi-mode receiver system layer. The calculating method comprises the steps that a design matrix of the multi-mode receiver system layer is built; a correlation matrix is processed through a block matrix inversion method; a calculating model of the geometric accuracy factor of the system layer is built; diagonal elements of the relevant portion are calculated correspondingly; and a calculating model of the geometric accuracy factor minimum value of the multi-mode receiver system layer is built. On the basis of the block matrix inversion principle, the correlation matrix is subjected to blocking according to the practical significance of a designed matrix, the diagonal elements of the relevantportion are calculated through the block matrix inversion method and an adjoint matrix, finally the geometric accuracy factor minimum value of the multi-mode receiver system layer is obtained, and the calculating process of the geometric accuracy factor minimum value of the system layer is simplified effectively.

Description

technical field [0001] The invention belongs to the technical field of navigation, and in particular relates to a calculation method for the minimum value of geometric precision factor of a multimode receiver system layer. Background technique [0002] Geometric Dilution of Precision (GDOP) describes the geometric distribution relationship between receivers and visible satellites. As an important index, it is of great significance in satellite selection, positioning accuracy evaluation, and system disease diagnosis. Generally, the smaller the GDOP value, the better the geometric distribution and the higher the positioning accuracy. Therefore, calculating the minimum value of GDOP has practical significance. With the continuous improvement and development of the Global Navigation Satellite System (GNSS), the number of visible satellites continues to increase. For multi-mode receivers, multiple different constellations (such as GPS, Galileo, GLONASS, Compass, etc.) can be us...

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Application Information

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IPC IPC(8): G01S19/37
CPCG01S19/37
Inventor 滕云龙黄琦李昌海
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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