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Troposphere atmosphere delay error correction method and correction system

An error estimation and atmospheric delay technology, applied in the field of satellite navigation, can solve problems such as difficulty, complex LSC data processing method, and reducing the feasibility of the LSC method.

Active Publication Date: 2016-06-01
GUANGZHOU HI TARGET NAVIGATION TECH
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Problems solved by technology

The LSC data processing method is more complicated, and it is very difficult to construct the correct covariance, which reduces the feasibility of the LSC method in application

Method used

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  • Troposphere atmosphere delay error correction method and correction system
  • Troposphere atmosphere delay error correction method and correction system
  • Troposphere atmosphere delay error correction method and correction system

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Embodiment 2

[0096] Figure 5 It is a schematic diagram of a tropospheric atmospheric delay error estimation correction model of the present invention, including a GNSS ground-based augmentation system network reference station, a CORS server baseline solution system and a mobile station;

[0097] GNSS ground-based augmentation system network reference station users are used to obtain GNSS observation data, and send the GNSS observation data to the CORS server baseline calculation system;

[0098] The CORS server baseline solution system includes a tropospheric correction number generator, a master station observation value generator, other correction number generators, a tropospheric dry component generator, a tropospheric wet component generator, and a differential data generator;

[0099] The input ends of the tropospheric dry component generator and the tropospheric wet component generator are respectively coupled to the tropospheric correction number generator, and the output ends are...

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Abstract

The present invention discloses a troposphere atmosphere delay error correction method and correction system. The method comprises the steps of (1) obtaining GNSS observation data through a GNSS foundation reinforcement system network reference stations, (2) sending the GNSS observation data to a CORS server baseline solution system, wherein the step (2) concretely comprises the steps of (a) decomposing troposphere delay into a troposphere dry component and a troposphere wet component according to the GNSS observation data and (b) carrying out regional linear interpolation model processing on the troposphere wet component to obtain a wet component correction value, and using a troposphere prior model to carry out altitude component correction of the troposphere dry component to obtain a dry component correction value, (C) combining the wet component correction value and the dry component correction value to obtain a troposphere correction value total. According to the method, the improvement of troposphere delay error correction is facilitated.

Description

technical field [0001] The invention relates to the field of satellite navigation, and more particularly, to a tropospheric atmospheric delay error estimation correction method and correction system. Background technique [0002] In the traditional GNSS / VRS error modeling technology, a single model is used to estimate multiple error parameters. The system model and stochastic model of the actual trend surface interpolation model cannot accurately and truly reflect the spatial distribution of troposphere, orbital errors and multipath errors. Such as elevation distribution and differences in random properties. The traditional error model is better in the accuracy of ionospheric delay correction, but because the tropospheric delay error is significantly affected by the elevation factor, there is a significant difference in the spatial correlation characteristics between the horizontal direction and the elevation direction, so the above model is directly applied to the troposphe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/07
CPCG01S19/07
Inventor 李成钢张晋升
Owner GUANGZHOU HI TARGET NAVIGATION TECH
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