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Law for calculating positive high value

A high-value, law-based technology, applied in the field of orthometric height, can solve problems such as not being on the same plane, two gravity lines not parallel, etc.

Pending Publication Date: 2021-11-23
张慎佳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of law of reckoning positive height value, to solve the above-mentioned background technology and propose existing two plumb lines at any two points of leveling, generally not on the same plane, and generally two vertical lines The problem of non-parallel gravity lines

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  • Law for calculating positive high value
  • Law for calculating positive high value
  • Law for calculating positive high value

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0033] see Figure 1-4 , a kind of embodiment that the present invention provides: a kind of extrapolation positive high value law, comprises steps as follows:

[0034] Step 1: Select any point P on the land surface i ;

[0035] Step 2: H 重 Determination of: For P i Find the length of the gravitational vector line of the corresponding point between the gravitational equipotential surface of the earth and the gravitational equipotential surface of the big celestial body;

[0036] Step 3: Determination of distance B: P i The real distance R to the navigation satellite A pi multiplied by R pi The cosine value of the included angle with the gravity vector line des...

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Abstract

The invention discloses a law for calculating a positive height value, relates to the technical field of positive height, and aims to solve the problems that two plumb lines at any two points are not on the same plane under general conditions and two gravity lines are not parallel under general conditions in the prior art. The method comprises the steps of 1, selecting any point Pi on the land surface; 2, determining H weight: finding the length of a gravity vector line of a corresponding point between a gravity equipotential plane of the earth body and a gravity equipotential plane of the large celestial body according to the Pi; 3, determining a distance B: multiplying a real distance Rpi from the Pi to the navigation satellite A by a cosine value of the Rpi and the included angle of the gravity vector line in the step 2; and 4, subtracting the distance B from the H weight in the step 2 to obtain a positive high value.

Description

technical field [0001] The invention relates to the technical field of orthometric heights, in particular to a law for estimating ortho-height values. Background technique [0002] The orthometric height is the elevation based on the geoid, that is, the vertical distance from the ground point to the geoid, also known as the absolute height or altitude, and the distance from the ground point to the quasi-geoid along the plumb line is called the normal height. The elevation system defined by the quasi-geoid becomes the normal height system, and the difference between the normal height and the orthometric height has a certain relationship with parameters such as normal gravity. [0003] In view of the fact that on the land surface of the natural terrestrial body, leveling is used to measure the height difference between any two points of short-distance mutual vision, "△h" is generally unprincipled, unscientific, and incorrect. The reason is The two plumb lines at any two point...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 张慎佳
Owner 张慎佳