Method for autonomously monitoring integrity of monitoring stations of global navigation satellite system augmentation system

A global navigation satellite and augmentation system technology, applied in the field of self-completeness monitoring, can solve problems such as the inability to guarantee the accuracy of monitoring stations, and achieve the effect of ensuring rigidity and strong reliability

Active Publication Date: 2010-08-11
CHINESE ACAD OF SURVEYING & MAPPING
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Problems solved by technology

[0034] In view of this, the object of the present invention is to provide a kind of autonomous completeness monitoring method of the global navigation satellite system augm

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  • Method for autonomously monitoring integrity of monitoring stations of global navigation satellite system augmentation system
  • Method for autonomously monitoring integrity of monitoring stations of global navigation satellite system augmentation system
  • Method for autonomously monitoring integrity of monitoring stations of global navigation satellite system augmentation system

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[0048] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0049] figure 1 It is a flowchart of the method for autonomous completeness monitoring of a monitoring station provided in this embodiment, and the method includes:

[0050] Step 101: Each monitoring station of the GNSS augmentation system receives satellite ephemeris and original satellite observation data. The monitoring stations of the GNSS augmentation system are distributed within the working range covered by the network. Each monitoring station serves as an independent GNSS station and receives the corresponding GNSS satellite ephemeris and original observation data. The satellite ephemeris is broadcast every two hours and can be used to calculate satellite position coordinates. The original satellite observations generally include pseudorange observations, ...

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Abstract

The invention discloses a method for autonomously monitoring the integrity of monitoring stations of a global navigation satellite system augmentation system, which comprises the following steps: receiving a satellite ephemeris and initial satellite data respectively by using each monitoring station of the GNSS augmentation system; transmitting the initial satellite data of each monitoring station to a master control station through a communication network; constructing a single-satellite multi-monitoring-station error equation by using the master control station according to the precise satellite ephemeris and the initial satellite data of each monitoring station; calculating a weight matrix according to different elevating angles of each monitoring station relative to satellites; establishing multi-satellite multi-monitoring-station errors and the weight matrix thereof; constructing a normal equation according to the error equation and the satellite weight matrix and resolving the normal equation according to a least square method; and performing gross error test and gross error identification according to corresponding residual errors so as to realize the autonomous integrity monitoring of the monitoring stations. Through the method, the monitoring stations which may have the errors can be eliminated and the reliability of the whole GNSS augmentation system is improved.

Description

technical field [0001] The invention relates to the field of satellite navigation, in particular to a method for autonomous completeness monitoring of a monitoring station of the global navigation satellite system by using a global navigation satellite system augmentation system. Background technique [0002] The Global Navigation Satellite System (GNSS for short) can realize real-time, continuous and high-precision navigation information such as position, speed and time within the range of land, sea and air all over the world, and has been widely used by various users. GNSS augmentation system is the key technology to enable users to obtain high-precision navigation and positioning results. [0003] In general GNSS augmentation systems such as GPS (Global Positioning System, referred to as GPS) wide-area augmentation system WAAS (Wide Area Augmentation System, referred to as WASS), it is generally composed of the following five parts: Continuously Operating Ground Reference...

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Application Information

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IPC IPC(8): G01S1/02G01S5/02G01S5/14
Inventor 秘金钟
Owner CHINESE ACAD OF SURVEYING & MAPPING
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