Method and device for simultaneously determining three-dimensional geometry position and gravity potential by utilizing global position system (GPS) signal

Abstract

The invention relates to a method and a device for simultaneously determining three-dimensional geometry position and gravity potential, in particular to a method and a device for simultaneously determining the three-dimensional geometry position and the gravity potential by utilizing a global position system (GPS) signal. In the technical scheme, a novel method for determining the gravity potential (including elevation height) by utilizing the GPS signal is added on the basis of the traditional GPS positioning method, an observation equation between the GPS signal and the gravity potential is established, and the gravity potential is solved on the basis of a principle of least square by utilizing multiple observation data. The invention has the advantages that: heavy water level measurement and gravity measurement are not needed, and the geoidal surface is not needed to be pre-determined to determine the elevation height by utilizing the GPS positioning method, so that numerous laborpower and financial resources are saved, and the restriction on measurement caused by mountains and cross oceans is avoided.

Description

technical field [0001] The invention relates to a method and device for simultaneously determining three-dimensional geometric position and gravity position, in particular to a method and device for simultaneously determining three-dimensional geometric position and gravity position by using GPS signals. Background technique [0002] The use of GPS signals to determine the three-dimensional geometric position is a very mature technology. In order to determine the gravity position or altitude, according to the traditional method, heavy leveling and gravity measurement are required, or the geoid needs to be determined in advance and then the GPS positioning method is used to determine the altitude, which not only requires a lot of manpower and financial resources, but also in mountainous areas are greatly restricted. Since the GPS signal contains three-dimensional geometric position information, the three-dimensional geometric position can be determined, which is a very matur...

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly solves the need for heavy leveling and gravity measurement in the prior art, or needs to determine the geoid in advance and then use the GPS positioning method to determine the altitude. Technical problems such as great limitations; provide a method that does not require heavy leveling and gravity measurement, and does not need to determine the geoid in advance and then use GPS positioning methods to determine the altitude, thus saving a lot of manpower and financial resources. Method and device for simultaneously determining three-dimensional geometric position and gravity position by using GPS signals without being restricted by mountainous areas and cross-ocean measurements

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