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Gross error detection method, device and equipment in real clock difference estimation and a storage medium

A technology of gross error detection and clock error estimation, which is applied in the field of satellite navigation, can solve the problems that the real-time clock error estimation cannot be applied, the real-time requirements cannot be met, and the gross error detection process takes a long time.

Inactive Publication Date: 2019-11-01
GUANGZHOU HI TARGET NAVIGATION TECH
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  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a gross error in real-time clock error estimation for the above-mentioned problems that cannot detect small gross errors. Detection method, device, equipment and storage medium

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  • Gross error detection method, device and equipment in real clock difference estimation and a storage medium
  • Gross error detection method, device and equipment in real clock difference estimation and a storage medium
  • Gross error detection method, device and equipment in real clock difference estimation and a storage medium

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Embodiment Construction

[0051] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0052]The current GNSS real-time data processing theory is based on the assumption that the measurement error obeys a normal distribution, and gross errors in the observations may destroy this premise, so that the navigation solution in the process of GNSS real-time data processing Incorrect results are obtained, or the navigation solution cannot be performed. Undetected or repaired cycle slips in phase observations are similar to gross errors, and have a more serious impact on the data processing accuracy of GNSS real-time data processing. Therefore, GNSS real-time data processing requires quality control of observations, detection and positioning of gross errors and cycle slips in pseudorange and phase observations.

[0053] C...

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Abstract

The invention discloses a gross error detection method, device and equipment in real clock difference estimation and a storage medium, and relates to the technical field of satellite navigation and used for target measurement stations. The method comprises the following steps of acquiring the observation quantity of a satellite associated with the target station at a current epoch; carrying out detection on the obtained gross error in the observed quantity to obtain an observation quantity gross error; processing the obtained observation quantity according to the observation quantity gross error to obtain a processed observation quantity; and sending the processed observation quantity to a GNSS real-time data processing server so that the GNSS real-time data processing server can estimatethe real clock difference of the satellite according to the processed observation quantity. Compared with the GNSS real-time data processing server in the prior art, the technical scheme of the invention performs gross error detection on the observation quantity and the unknown parameter corresponding to each measuring station, so that the data calculation amount is reduced, the calculation speedis increased, the real-time performance requirement can be met, and the method can be applied to real-time clock difference estimation.

Description

technical field [0001] The present application relates to the technical field of satellite navigation, in particular to a gross error detection method, device, equipment and storage medium in real-time clock error estimation. Background technique [0002] Gross errors refer to errors that obviously exceed expectations under normal circumstances. Gross errors in observations will cause wrong results in navigation and positioning data processing, or cannot be solved. Therefore, the gross error seriously affects the accuracy of the satellite clock error obtained by the real-time clock error estimation of the GNSS (English: Global Navigation Satellite System; abbreviation: Global Navigation Satellite System) real-time data processing server. [0003] Related technologies propose a pre-test gross error detection method, which uses the HMW combination and ionospheric combination of dual-frequency pseudorange and phase observations of each satellite to detect and mark gross errors,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/37
CPCG01S19/37
Inventor 戴志强葛茂荣鲍志雄李成钢史小雨左翔
Owner GUANGZHOU HI TARGET NAVIGATION TECH