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GPS observation station coordinate time sequence periodic-detection method and system

A technology of coordinate time series and detection methods, applied in radio wave measurement systems, satellite radio beacon positioning systems, measurement devices, etc., can solve problems such as the influence of uncertainty in rate estimation

Inactive Publication Date: 2015-07-08
WUHAN UNIV
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Problems solved by technology

[0005] At present, there are shortcomings in the periodic detection method of GPS station coordinate time series: describing the periodic time-varying signal as a time-invariant signal will have a significant impact on the rate estimation and its uncertainty

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  • GPS observation station coordinate time sequence periodic-detection method and system
  • GPS observation station coordinate time sequence periodic-detection method and system
  • GPS observation station coordinate time sequence periodic-detection method and system

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Embodiment Construction

[0043] In order to make the objectives, technical solutions and beneficial effects of the present invention more clear, the present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific embodiments described below are only used to explain the present invention, and are not intended to limit the present invention.

[0044] Concrete steps of the present invention are as follows:

[0045] Step 1. Obtain GPS station coordinate time series observations.

[0046] This step belongs to the conventional technology in this technical field, specifically, it can be performed by double-difference positioning software (such as mature GAMIT / GLOBK data processing software), precise single-point positioning software (such as mature GIPSY / OASIS data processing software), or IGS analysis center Obtain GPS station coordinate time series observations.

[0047] Step 2: Eliminate gross ...

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Abstract

The invention provides a GPS observation station coordinate time sequence periodic-detection method and system. The GPS observation station coordinate time sequence periodic-detection method comprises the steps of 1 obtaining an observed value of a GPS observation station coordinate time sequence, 2 removing a gross error of the observed value of the GPS observation station coordinate time sequence and rectifying an antenna phase center deviation, 3 adopting a harmonic function to describe the GPS observation station coordinate time sequence so as to obtain a harmonic function model of the GPS observation station coordinate time sequence and designing a harmonic function model matrix, 4 adopting a least square method to resolve the harmonic function model matrix and detecting the periodicity of the GPS observation station coordinate time sequence. The GPS observation station coordinate time sequence periodic-detection method and system can process GPS observation station coordinate time sequences including time-variant periodic signals and ensure detection accuracy.

Description

technical field [0001] The invention belongs to the technical field of precise processing of GPS data, and in particular relates to a method and system for periodically detecting GPS station coordinate time series. Background technique [0002] The coordinate time series of GPS stations are mainly used for the establishment of noise model and velocity model. Existing GPS station coordinate time series prediction and estimation models usually include seasonal signals, and widely use periodic signals such as annual signals and half-annual signals as constant parameters (Blewitt and Lavallée, 2002), and generally use the annual cycle and its harmonics Wave and sinusoidal modeling of constant amplitude (Nicolaidis, 2002). [0003] The seasonal signal in the GPS station coordinate time series is the response to the environmental change, but the environmental noise hidden in the seasonal signal is unstable. Research results show that the manifestations of environmental noise hav...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/37
CPCG01S19/37
Inventor 周晓慧姜卫平马一方
Owner WUHAN UNIV
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