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

A phase difference and epoch-by-epoch technology, which is applied in the field of high-frequency phase difference by epoch, can solve the problems of inability to provide precise positioning and station management

Active Publication Date: 2016-03-23
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
  • High-frequency epoch-by-epoch phase difference method for single-frequency GNSS phase stability monitoring
  • High-frequency epoch-by-epoch phase difference method for single-frequency GNSS phase stability monitoring

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[0053] 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.

[0054] 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:

[0055] (1) Calculate the phase difference by epoch

[0056] 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, comprising the following steps: using a single-frequency GNSS receiver to perform high-frequency observation on a station point, and calculating the phase difference between adjacent epochs; using the least squares method to detect a station 3D (NEU) coordinate correction number time series within the interval of adjacent epochs under continuous epochs; getting the mean and standard deviation of the NEU coordinate through statistical analysis of the time series; and calculating the anomaly ratio. The phase observation stability of the single-frequency GNSS receiver is evaluated by calculating the continuous observation anomaly ratio using the method. Single-point real-time high-frequency GNSS phase data quality monitoring is carried out based on single-frequency GNSS data. The GNSS phase stability can be evaluated without the need for high-precision clock difference or model correction.

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 Applications(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
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