Determination method and determination device of height anomaly

A technology of height anomaly and measurement method, which is applied in the field of surveying and mapping, can solve problems such as difficulty in height anomaly measurement, low precision, and abnormal elevation of measurement points, and achieve the effect of avoiding complex algorithms and simplifying the accuracy of dots

Inactive Publication Date: 2016-09-21
HARXON CORP
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Problems solved by technology

[0006] In view of this, the technical problem to be solved by the present invention is to provide a measurement method and a measurement device for measuring point elevation anomalies, so as to solve the problem of difficult and low-precision elevation anomaly measurement in GPS surveying and mapping engineering

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  • Determination method and determination device of height anomaly
  • Determination method and determination device of height anomaly
  • Determination method and determination device of height anomaly

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Embodiment Construction

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] Such as figure 1 As shown, the present invention provides a method for measuring height anomalies, and the method for measuring comprises:

[0037] 1. Obtain the current latitude and longitude information of the device.

[0038] 2. Determine the corresponding first target network point in the preset elevation abnormal network point lookup table according to the latitude and longitude information obtained above; the first target network point is the network point corresponding to the current location of the device.

[0039] in:

[0040] The pre...

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Abstract

The invention discloses a determination technology of height anomaly, and belongs to the field of surveying and plotting. The determination method of height anomaly includes acquiring the present latitude and longitude information of the equipment; determining the corresponding first object node according to the acquired latitude and longitude information in the preset height anomaly node lookup table; acquiring a height anomaly of the first object node, a height anomaly of a second object node having the preset spacing distance with the first object node, and the corresponding latitude and longitude information from the height anomaly node lookup table; calculating fitting parameter value of the polynomial surface according to the acquired height anomaly, latitude and longitude information and the present polynomial surface formula; and calculating the height anomaly of the latitude and longitude information according to the latitude and longitude information, the polynomial surface formula and the fitting parameter value. The invention also discloses a determination device of height anomaly. The determination technology of height anomaly provided by the invention can overcome the problems of determination difficulty and low precision of height anomaly in the GPS plotting engineering.

Description

technical field [0001] The invention relates to the field of surveying and mapping, in particular to a method and device for measuring elevation anomalies in GPS surveying and mapping engineering. Background technique [0002] In GPS surveying and mapping engineering, the elevation anomaly is the height from the quasi-geoid to the ellipsoid of the earth. [0003] At present, the traditional methods for determining elevation anomalies in GPS surveying and mapping engineering mainly include the following: 1. Using GPS leveling to measure elevation anomalies; 2. Using gravity field models to solve elevation anomalies; 3. According to the geographical shape of different regions, certain Quantitative GPS-benchmarking points, using curve, surface and other fitting methods for height anomaly fitting. [0004] In the hilly and mountainous areas of our country, using GPS-leveling to measure height anomalies requires a large amount of engineering and is difficult to measure in mounta...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 王春华刘念李振亚
Owner HARXON CORP
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