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Plumb line deviation measuring device and method

A vertical line deviation and measuring device technology, which is applied in the direction of measuring devices, radio wave measuring systems, satellite radio beacon positioning systems, etc., can solve the problems of high price and achieve the effect of low cost, high precision and small workload

Active Publication Date: 2018-02-09
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

Although the instrument has high measurement accuracy, it is expensive and can only be observed on a clear night without background light interference

Method used

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  • Plumb line deviation measuring device and method
  • Plumb line deviation measuring device and method
  • Plumb line deviation measuring device and method

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Embodiment Construction

[0067] In order to facilitate the understanding of the technical solution of the present invention, at first the principle of the vertical line deviation measurement used in the present invention is described as follows:

[0068] Such as image 3 As shown, the geodetic elevation difference Δh, the leveling elevation difference ΔH, the baseline length L, and the vertical line deviation θ in this direction have the following relationship between two points A and B (requiring about 50-100m) in any direction:

[0069]

[0070] Since the angle between the geoid and the ellipsoid is usually at the arc-second level, the sine of the angle and the angle itself (in radians) can be regarded as indistinguishable, that is, the above formula can be written as:

[0071]

[0072] Therefore, the vertical deviation in this direction can be obtained from GNSS observations and leveling observations.

[0073] And because the vertical line deviation in the baseline direction has the followin...

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Abstract

The invention discloses a plumb line deviation measuring device and method. Four auxiliary measuring points are selected in any two orthogonal directions of a plumb line deviation measuring point, thedistances between every two auxiliary measuring points in all directions are equal, the plumb line deviation measuring devices are installed on the auxiliary measuring points for GNSS high-frequencyobservation, the precise geodetic height difference, base line lengths and azimuth angles in the two orthogonal directions of the auxiliary measuring points are calculated, meanwhile a fluid hydrostatic leveling device is utilized to measure the precise level height difference of the two orthogonal directions of the auxiliary measuring points, thus plumb line deviation components of the plumb linedeviation measuring point in the two orthogonal directions are calculated according to the mathematic relation of the geodetic height difference, base line lengths and level height difference of thetwo orthogonal directions of the auxiliary measuring points, and finally a meridian component and a prime component of a plumb line deviation are calculated by utilizing the plumb line deviation components in the two orthogonal directions and the relation of the azimuth angles and the meridian component and the prime component of the plumb line deviation. The plumb line deviation measuring devicecan be operated in an all-weather mode and has the advantages of being small in working amount, capable of saving manpower and material resources, low in cost, higher in precision and the like.

Description

technical field [0001] The invention relates to a vertical line deviation measuring device and method. Background technique [0002] At a point on the ground, the angle u between its gravity vector g and the normal vector n on the corresponding ellipsoid is the vertical deviation of the point, which represents the inclination of the geoid. Usually, the included angle u is represented by the meridian component ξ (the component in the north-south direction) and the unitary circle component η (the component in the east-west direction). Obviously, according to the different ellipsoids used, it can be divided into absolute vertical deviation and relative vertical deviation. The angle formed by the vertical line with the normal of the total earth ellipsoid or reference ellipsoid is called absolute or relative vertical deviation. They are collectively referred to as Astronomical geodetic vertical deviation. In addition, the angle between the gravity vector g in the actual gravity...

Claims

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Application Information

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IPC IPC(8): G01C5/04G01S19/13
CPCG01C5/04G01S19/13Y02A90/30
Inventor 郭金运刘路刘新刘智敏孔巧丽袁佳佳
Owner SHANDONG UNIV OF SCI & TECH
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