Single-difference parameter determination method and device for single-point positioning, equipment and medium

A single-point positioning and parameter determination technology, which is applied in the field of data processing, can solve problems such as unsatisfactory work requirements and unsolvable observation data, and achieve the effects of accelerating calculation speed, simplifying calculation logic, and improving calculation efficiency

Active Publication Date: 2019-06-07
SHANGHAI HUACE NAVIGATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the prior art, the calculated wide-lane ambiguity N w , wide-lane ambiguity N w The covariance matrix Q of nw , and N w and N 1 The cross-covariance matrix Q n1nw The algorithm and calculation of each parameter after the single difference calculation: sdN 1 , sdN w 、sdQ n1 、sdQ nw 、sdQ n1nw The algorithm and the algorithm for obtaining the fixed narrow lane ambiguity b

Method used

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  • Single-difference parameter determination method and device for single-point positioning, equipment and medium
  • Single-difference parameter determination method and device for single-point positioning, equipment and medium
  • Single-difference parameter determination method and device for single-point positioning, equipment and medium

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Embodiment 1

[0025] figure 1 It is a flowchart of a single difference parameter determination method for single point positioning provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of calculating the received single-difference parameters for single-point positioning. The method can be performed by a single-difference parameter determination device for single-point positioning, and the single-difference parameter determination device for single-point positioning can be implemented in software and / or hardware, for example, the single-difference parameter determination device for single-point positioning The difference parameter determining means can be configured in computer equipment. In this embodiment, non-combined precise point positioning technology (precise point positioning, PPP) is used for illustration, but the method provided by the embodiment of the present invention is not only applicable to non-combined precise point positioning te...

Embodiment 2

[0052] figure 2 It is a flow chart of a single difference parameter determination method for single point positioning provided by Embodiment 2 of the present invention. This embodiment is further optimized on the basis of the foregoing embodiments. Such as figure 2 As shown, the method includes:

[0053] S210. Obtain observation data of the target object, and calculate a plurality of original matrix parameters used for positioning the target object according to the observation data.

[0054] S220. Deduce at least one calculation formula including an integration coefficient matrix according to the conversion formula and the single-difference calculation formula. The integration coefficient matrix is ​​the product of the conversion coefficient matrix of the conversion formula and the single-difference calculation coefficient matrix of the single-difference calculation formula.

[0055] In this embodiment, the derivation manner of the preset calculation rule for calculating ...

Embodiment 3

[0093] image 3 It is a flow chart of a single difference parameter determination method for single point positioning provided by Embodiment 3 of the present invention. This embodiment is further optimized on the basis of the foregoing embodiments. Such as image 3 As shown, the method includes:

[0094] S310. Obtain observation data of the target object, and calculate a plurality of original matrix parameters used for positioning the target object according to the observation data.

[0095] S320. According to the original matrix parameters and preset calculation rules, calculate a plurality of positioning matrix parameters for eliminating the influence of the fractional week deviation, the positioning matrix parameters include the widelane ambiguity after the single difference calculation and the single difference calculation After the third covariance matrix.

[0096] S330. Based on the single-difference calculated wide-lane ambiguity and the single-difference calculated...

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Abstract

The embodiments of the invention disclose a single-difference parameter determination method and device for single-point positioning, equipment and a medium. The single-difference parameter determination method comprises the steps that observation data of a target object are acquired, and a plurality of original matrix parameters for positioning the target object are calculated according to the observation data; and a plurality of positioning matrix parameters for eliminating the influence of decimal cycle deviation are calculated according to the original matrix parameters and preset calculation rules, wherein the preset calculation rules are addition and subtraction operations. According to the single-difference parameter determination method provided by the embodiments, the positioningmatrix parameters for eliminating the influence of the decimal cycle deviation can be calculated through the addition and subtraction operations, the calculation logic of the single-difference parameters is simplified, the calculation speed is accelerated, and the calculation efficiency is improved.

Description

technical field [0001] Embodiments of the present invention relate to the field of data processing, and in particular, to a single-difference parameter determination method, device, equipment, and medium for single-point positioning. Background technique [0002] Global Navigation Satellite System (GNSS) can realize high-precision positioning measurement. When positioning based on GNSS observation data, in order to improve the solution accuracy and shorten the convergence time, the integer ambiguity needs to be fixed. Taking the precise point positioning (PPP) technology as an example, due to the influence of various residual errors, it is generally difficult to directly fix the ambiguity of the whole circumference. The usual method is to fix the ambiguity of the wide lane first, and then use the fixed The wide-lane ambiguity constrains the floating-point ambiguity, and then fixes the floating-point ambiguity constrained by the wide-lane ambiguity. [0003] At present, the...

Claims

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Application Information

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IPC IPC(8): G01S19/41
Inventor 胡金林李早玲汪利席月东王红阳婷兰悦吴洁
Owner SHANGHAI HUACE NAVIGATION TECH
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