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Method and device for processing observation data of control points in three-dimensional control network

A technology of observation data and three-dimensional control, which is applied in the field of data processing, can solve the problem of inaccurate observation values ​​of the control points of the non-parallelity of the plumb line, and achieve the effect of high accuracy

Active Publication Date: 2020-02-14
PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU +1
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method and device for processing observation data of control points in a three-dimensional control network, which is used to solve the problem that the observation values ​​of control points are inaccurate due to the influence of non-parallelism of plumb lines in the prior art

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  • Method and device for processing observation data of control points in three-dimensional control network

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[0028] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0029] Method example:

[0030] This embodiment provides a method for processing observation data of control points in a three-dimensional control network, and the steps are as follows:

[0031] Obtain the observation data of each control point in the 3D control network, including azimuth, zenith distance and slope distance; for each control point observation data, the following steps are used to modify:

[0032] According to the observation data of the control point, the coordinates of the control point in the corresponding station coordinate system are calculated. Specifically, the observation data of the control point at station i is assumed to be (α, V, S). Since the observation value of the slope distance does not change before and after rotation, S=1 is taken and the analysis is carried out in the unit sphere. On the station i, in th...

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Abstract

The invention relates to a method and device for processing observation data of control points in a three-dimensional control network, and belongs to the technical field of data processing. The methodcomprises the steps of: obtaining the observation data, including azimuth angles, zenith distances and slant distances, of all control points in a three-dimensional control network; according to theobservation data of each control point, calculating coordinates of each control point under a corresponding observation station coordinate system, wherein a corresponding observation station is an observation station of an actual measurement control point; and selecting the observation station coordinate system of one control point as a reference coordinate system, and calculating the coordinatesof each control point under the reference coordinate system according to the rotation relationship between the observation stations of the remaining control points and the normal lines on the observation stations of the selected control points in combination with the coordinates of each control point under the corresponding observation station coordinate system. Compared with the prior art, by considering the influence of plumb line non-parallelism, the observation data of the control points is modified, and an adjustment result after modification is high in accuracy.

Description

technical field [0001] The invention belongs to the technical field of data processing, and in particular relates to a method and device for processing observation data of control points in a three-dimensional control network. Background technique [0002] In the precision triangular height measurement of the prior art, by fixing the corner cube respectively on two total stations, the relevant measurement information (comprising the horizontal angle, the vertical angle and the slope distance) can be determined by observing the corner cube when measuring. ),Such as figure 1 shown. Affected by the curvature of the earth and the inhomogeneity of the gravitational field, the directions of the plumb lines (the reference line for field measurement) of each station are not parallel. Generally speaking, in a small range, the influence of the non-uniformity of the gravitational field on the measurement results can be ignored, and the difference in the direction of the plumb line of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/00G01C1/00
CPCG01C1/00G01C15/00
Inventor 李宗春郭迎钢汤进九何华司奎冯其强邓磊张冠宇王志远
Owner PLA STRATEGIC SUPPORT FORCE INFORMATION ENG UNIV PLA SSF IEU
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