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Grid-based base station network location enhancement information availability monitoring method and system

A technology for enhancing information and reference stations, applied in satellite radio beacon positioning systems, radio wave measurement systems, measurement devices, etc. Uniform monitoring to achieve the effect of overall space availability

Active Publication Date: 2021-08-03
JIANGSU PROVINCE SURVEYING & MAPPING ENG INST +2
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since it is difficult for a small number of monitoring stations to effectively cover the entire reference station network area, it is difficult to reflect the overall space availability of the reference station network system from the perspective of users

Method used

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  • Grid-based base station network location enhancement information availability monitoring method and system
  • Grid-based base station network location enhancement information availability monitoring method and system
  • Grid-based base station network location enhancement information availability monitoring method and system

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Embodiment Construction

[0052] combine figure 1 and figure 2 As shown, Embodiment 1 discloses a grid-based reference station network positioning enhanced information availability monitoring method, and the specific steps are as follows:

[0053] In step (1), the known coverage area of ​​the reference station network is equally divided into grids according to latitude and longitude.

[0054] The coordinates of the divided grid points (which can be regarded as virtual reference stations) can be obtained as follows:

[0055]

[0056] In the formula, B (i,j) , L (i,j) and H (i,j) represent the latitude, longitude and height of the grid point (i, j) respectively; B max and B min Respectively represent the maximum latitude and minimum latitude of the coverage area of ​​the reference station network; L max and L min Respectively represent the maximum longitude and minimum longitude of the coverage area of ​​the reference station network; m and n represent the number of divisi...

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Abstract

The invention discloses a grid-based method for monitoring the availability of enhanced information of reference station network positioning, which includes: dividing the known coverage area of ​​the reference station network into grids equidistantly according to latitude and longitude, and obtaining the three-dimensional coordinates of each grid point; according to The three-dimensional coordinates of each grid point generate corresponding virtual GGA information and upload it to the data processing center to request the generation of virtual observation values ​​of each grid point; perform cycle slip detection and pseudo-range single-point positioning calculation on the virtual observation values ​​returned by the data processing center, Implement abnormal detection of observed values, and judge the actual number of satellites available at each grid point; combine the comprehensive broadcast ephemeris of the reference station network and the coordinates of the grid point, calculate the theoretical number of satellites available at each grid point; and then calculate the number of satellites in the coverage area of ​​the reference station network Satellite utilization at each grid point. The invention realizes the uniform monitoring of positioning enhancement information in the coverage area of ​​the reference station network from the perspective of users, thereby enriching and perfecting the reliability system of high-precision enhanced positioning.

Description

technical field [0001] The invention relates to an availability monitoring technology for enhanced positioning of a reference station network, in particular to a grid-based method for monitoring the availability of enhanced positioning information of a reference station network, and belongs to the technical field of GNSS (Global Navigation Satellite System) positioning and navigation. Background technique [0002] The GNSS continuous operation reference station network (referred to as "GNSS reference station network") is composed of a number of uniformly distributed reference stations within the region, receiving satellite navigation data in real time around the clock, and calculating inter-station atmospheric errors through inter-reference station baseline calculations Correction, and then model the positioning error for the entire coverage area. Later, using a network composed of computers, data communications and Internet technologies, it provides real-time location-enhan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/20
CPCG01S19/20
Inventor 王勇潘树国高旺王开锋闫志跃乔龙雷
Owner JIANGSU PROVINCE SURVEYING & MAPPING ENG INST
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