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High-frequency epoch-by-epoch phase difference method for single-frequency GNSS phase stability monitoring

A phase difference, epoch-by-epoch technology, applied in the field of high-frequency epoch-by-epoch phase difference, can solve the problems of inability to accurately locate and provide station management, and achieve the effect of eliminating tides

Active Publication Date: 2017-09-19
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

However, these indicators cannot directly provide effective data quality information for precise positioning and station management, because these indicators do not necessarily reflect the quality of the actual GNSS phase

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  • High-frequency epoch-by-epoch phase difference method for single-frequency GNSS phase stability monitoring
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  • High-frequency epoch-by-epoch phase difference method for single-frequency GNSS phase stability monitoring

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Embodiment Construction

[0054] The present invention is a high-frequency epoch-by-epoch phase difference method for single-frequency GNSS phase stability monitoring, which has universal characteristics and can replace data post-processing analysis with single-point real-time monitoring; the evaluation method can eliminate tides, multipath effects, and ionization layer and troposphere, ambiguity, clock bias, hardware delay, etc. without the need for high-precision clock bias, various model corrections, etc.

[0055] The method for monitoring the stability of the phase by using the single-frequency GNSS receiver through the high-frequency epoch-by-epoch phase difference includes the following steps:

[0056] (1) Calculate the phase difference by epoch

[0057] Use a single-frequency GNSS receiver to perform high-frequency (eg 1 Hz) observations on a station P. Under the condition that the number of observation satellites is more than 3, the phase data of two adjacent epochs are collected at high frequ...

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Abstract

The invention discloses a high-frequency epoch-by-epoch phase difference method for single-frequency GNSS phase stability monitoring. A single-frequency GNSS receiver is used to perform high-frequency observation at a station, and the phase difference between adjacent epochs is calculated. The multiplication method is used to calculate the time series of three-dimensional (NEU) coordinate correction numbers of the station in the adjacent epoch interval under continuous epochs, and through the statistical analysis of the time series, the average value and standard deviation of the NEU coordinates are respectively obtained, and the abnormal ratio is calculated. The proposed method is used to solve the anomaly ratio of continuous observations to evaluate the stability of phase observations of single-frequency GNSS receivers. The invention utilizes single-frequency GNSS data to monitor the quality of single-point real-time high-frequency GNSS phase data; and can evaluate GNSS phase stability without high-precision clock error and various model corrections.

Description

technical field [0001] The invention relates to a high-frequency epoch-by-epoch phase difference method for single-frequency GNSS phase stability monitoring. Background technique [0002] Global Navigation Satellite System (GNSS) is a very important space technology that provides precise positioning, navigation and time services on a global or regional scale. GNSS mainly includes GPS in the United States, GLONASS in Russia, and several other emerging global / regional satellite constellation systems, such as Galileo in Europe and Beidou in China. Compared with regional satellite navigation systems and satellite-based augmentation systems, GNSS is a standard title for global satellite navigation systems. The satellite augmentation system will enhance the system performance of GNSS after it is operational in the future. [0003] GNSS is widely used in social and economic development and national defense construction. GNSS technology is a priority technology in the constructio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/01
CPCG01S19/01
Inventor 郭金运沈毅王建波刘智敏董正华于红娟孔巧丽解斐斐
Owner SHANDONG UNIV OF SCI & TECH