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A Method for Smoothing Pseudoranges

A smoothing, pseudo-range technology, applied in satellite radio beacon positioning systems, measuring devices, instruments, etc., can solve problems such as not being able to adapt to flexible and changing application requirements, and achieve the effect of accurate smoothing results

Active Publication Date: 2018-05-29
SICHUAN JIUZHOU ELECTRIC GROUP
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  • Abstract
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Problems solved by technology

[0007] Aiming at the problem that the existing smoothing method cannot well adapt to flexible and changeable application requirements, the present invention provides a method for smoothing pseudoranges, the method comprising the following steps:

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  • A Method for Smoothing Pseudoranges
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[0038] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so that implementers of the present invention can fully understand how the present invention uses technical means to solve technical problems, and achieve the realization process of technical effects and according to the above-mentioned realization process The present invention is implemented concretely. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0039] Carrier phase observations and pseudorange observations can be obtained from the baseband signal of the GPS receiver. Because the noise contained in the pseudorange is much larger than that of the carrier phase, and the degree of influence by multipath is also more ...

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Abstract

The invention discloses a pseudo-range smooth processing method comprising the following steps that step one, smooth processing parameters are defined; step two, a smooth pseudo-range equation is constructed based on the smooth processing parameters according to a Kalman filtering model; and step three, smooth processing is performed on pseudo-range of a target to be measured based on the smooth pseudo-range equation so that a final smooth processing result is obtained. Compared with methods in the prior art, a situation of single-frequency pseudo-range smooth value divergence in the prior art is effectively solved by the pseudo-range smooth processing method, and different movement states of the target are comprehensively considered so that the acquired smooth processing result is enabled to be more accurate and meet the practical situation further.

Description

technical field [0001] The invention relates to the technical field of analysis and measurement control, in particular to a method for smoothing pseudoranges. Background technique [0002] Carrier phase observations and pseudorange observations can be obtained from the baseband signal of a Global Positioning System (GPS) receiver. Since the pseudo-range transformation between the target to be measured and the satellite can be accurately reflected in the high-precision carrier phase change, the pseudo-range observation can be smoothed by using the carrier phase change, thereby improving the pseudo-range observation accuracy. [0003] However, the smoothing results obtained based on the existing smoothing methods cannot well meet the flexible and changeable application requirements. It has the following problems: [0004] 1. In the process of smoothing based on existing methods, when the number of processing cycles is large, the current pseudorange observations have little ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/37
CPCG01S19/37
Inventor 杨志坤黄佳李军周文胜
Owner SICHUAN JIUZHOU ELECTRIC GROUP
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