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Panel control measurement method based on sine and cosine theorem algorithms

A cosine theorem, a technology for controlling measurement, applied in measurement devices, measuring instruments, surveying and navigation, etc., to overcome the low measurement accuracy, improve accuracy, and improve accuracy.

Inactive Publication Date: 2012-07-18
CHINA METALLURGICAL CONSTR ENG GRP
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Problems solved by technology

[0006] In view of the above-mentioned deficiencies existing in the prior art, the purpose of the present invention is to provide a plane control measurement method based on the sine and cosine theorem algorithm, so that in the plane control survey, only two control points that cannot be seen through are known. In the case of coordinates, the coordinates of the encrypted new control points are measured, and the accuracy requirements for matching with known control points can be met

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  • Panel control measurement method based on sine and cosine theorem algorithms
  • Panel control measurement method based on sine and cosine theorem algorithms
  • Panel control measurement method based on sine and cosine theorem algorithms

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Embodiment Construction

[0026] The technical scheme of the present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0027] The plane control measurement method based on the sine and cosine theorem algorithm includes the following steps:

[0028] (1) Layout:

[0029] see figure 2 , in the survey area, there are known two control points A and B, and the two control points A and B cannot see each other, and the coordinate of A is (x A :71248.515,y A : 38961.873), the coordinates of B are (x B :71191.403,y B : 39089.841); Encrypt a new control point C outside the connection line between the two control points of AB, so that the new control point C can see both A and B, and the coordinates of C are set to (x C ,y C ).

[0030] When selecting control point C, try to choose a point with an intersection angle between 30° and 120°, even if the angle of ∠ACB is between 30° and 120°.

[0031] (2) Measurement:

[0032] Use the ranging function of the ...

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Abstract

The invention provides a panel control measurement method based on sine and cosine theorem algorithms. The method disclosed by the invention comprises the following steps of: encrypting a new control point C between A and B points which cannot be mutually visualized; utilizing an angle observation set method of an electronic total station and measuring a reciprocating distance to measure a distance between AB and BC and an angle of an angle ACB; utilizing A and B coordinates of a coordinate algorithm to calculate a theoretical distance between the A and B points and utilizing the theoretical distance to identify the precision and the accuracy of measured data of the electronic total station; and finally, utilizing sine and cosine theorems and a back calculation of the coordinates to calculate a plane position of the new control point C. Therefore, the measurement precision is improved and the measurement work is ensured to be smoothly processed.

Description

technical field [0001] The invention relates to a measurement method for measuring control points, in particular to a plane control measurement method based on the algorithm of sine and cosine theorem. Background technique [0002] Plane control survey is a measurement method often used in engineering construction. The so-called plane control survey is to measure the plane position of a series of control points in the survey area according to the accuracy required by the design and specifications, and establish a survey control network as the basis for the measurement. Construction engineering survey, water conservancy engineering survey, railway survey, highway survey, bridge engineering survey, tunnel engineering survey, mine survey, urban municipal engineering survey, etc. in engineering survey are all based on control survey work. [0003] However, when we use a total station for plane control surveys, we often encounter such a situation. The two known control points wi...

Claims

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Application Information

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IPC IPC(8): G01B21/00G01C15/00
Inventor 周波林李定彬
Owner CHINA METALLURGICAL CONSTR ENG GRP
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