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Single epoch GNSS solving method with horizontal restraining

A technology with horizontal constraints and single epoch, applied in the directions of instruments, measuring devices, satellite radio beacon positioning systems, etc., it can solve the problems of long initialization time, etc., and achieve the effects of improving reliability, easy determination of ambiguity, and high positioning accuracy.

Active Publication Date: 2019-04-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem: The current commonly used GNSS-RTK technology needs to detect and repair cycle slips, and there are problems such as long initialization time, while the present invention has the advantages of no need to detect cycle slips, can make full use of observation data, and has high positioning accuracy. High-rise building motion law constraints improve the reliability of ambiguity resolution

Method used

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  • Single epoch GNSS solving method with horizontal restraining
  • Single epoch GNSS solving method with horizontal restraining
  • Single epoch GNSS solving method with horizontal restraining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1: the static coordinate (X of monitoring point 0 ,Y 0 ,Z 0 ) of the acquisition

[0052] When measuring the deformation of a super high-rise building under the action of strong wind, it is first necessary to determine the initial position of the super high-rise building in a static state. In order to determine its initial position, select a time point with good weather conditions to conduct static observations on super high-rise buildings for about two to three weeks, use GAMIT software to perform static calculations every hour, and then take the average of all calculation results Static coordinates (X 0 ,Y 0 ,Z 0 ).

Embodiment 2

[0053] Embodiment 2: Calculate its displacement y.

[0054] First, use GNSS-RTK technology to solve the coordinates of the monitoring points for 15-30 minutes, and use the wavelet filter method to decompose the GNSS coordinate (displacement) sequence in multiple scales. Take ten scale results for analysis), which can effectively separate structural vibration and various influencing items. Establish the simple harmonic motion equation of a super high-rise building under the action of strong wind:

Embodiment 3

[0055] Embodiment 3: establishment of constraint equation

[0056] (X-X 0 ) 2 +(Y-Y 0 ) 2 +(Z-Z 0 ) 2 =y 2

[0057] Let the approximate GNSS coordinates of the monitoring station be (X 0 ,Y 0 ,Z 0 ), put formula (11) in (X 0 ,Y 0 ,Z 0 ) to expand Taylor’s formula, we get:

[0058]

[0059] Therefore, the constraint equation can be obtained:

[0060]

[0061] Where: C=[2(X 0 -X 0 )2(Y 0 -Y 0 )2(Z 0 -Z 0 )]; W=y 2 -(X 0 -X 0 ) 2 -(Y 0 -Y 0 ) 2 -(Z 0 -Z 0 ) 2

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Abstract

The invention discloses a single epoch GNSS solving method with horizontal restraining. A key problem of dynamic single epoch positioning is a correct solution of ambiguities. By increasing constraintconditions, the reliability of the single epoch solution ambiguities can be improved. The monitoring point GNSS coordinate sequence of observation data of 15-30 min is used, a wavelet analysis methodis used for determining a simple harmonic motion equation of a super high-rise building under the external force loading action, and the constraint conditions are constructed according to the motionlaw of the super high-rise building. In order to solve the problem of the rank defect of single epoch solving, a pseudorange observation value is introduced, as the combined wavelength of a wide laneis longer, and the ambiguity is easier to determine. Therefore, through the constraint conditions additionally having the super high-rise building motion state, the ambiguity of the wide lane is firstly fixed, then state restraining is added to determine the L1 and L2 ambiguities, and quick solving of the ambiguities is achieved.

Description

technical field [0001] The invention belongs to the technical field of deformation monitoring of super high-rise buildings, and relates to a single-epoch GNSS calculation method with horizontal constraints. Background technique [0002] my country's "General Rules for Civil Building Design" (GB 50352-2005) divides residential buildings according to the number of floors: the first to third floors are low-rise residential buildings, the fourth to sixth floors are multi-storey residential buildings, and the seventh to ninth floors are middle and high-rise buildings. Residential buildings, ten floors and above are high-rise residential buildings. Civil buildings other than residential buildings whose height is not greater than 24m are single-storey and multi-storey buildings, those greater than 24m are high-rise buildings (excluding single-storey public buildings with a building height greater than 24m); civil buildings with a building height greater than 100m are superstructure ...

Claims

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Application Information

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IPC IPC(8): G01S19/44
CPCG01S19/44
Inventor 王庆严超吴向阳阳媛
Owner SOUTHEAST UNIV
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