Method and system for photoelectric ranging meteorological correction

A photoelectric ranging and meteorological technology, used in radio wave measurement systems, re-radiation of electromagnetic waves, measurement devices, etc. simple structure

Inactive Publication Date: 2016-06-08
WUHAN UNIV
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  • Application Information

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Problems solved by technology

Since the distribution of meteorological elements on the actual propagation path of the ranging signal is not fixed, the error of this method is relatively large, especially when the distribution of the atmosphere is uneven, it will bring great errors to the ranging

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  • Method and system for photoelectric ranging meteorological correction
  • Method and system for photoelectric ranging meteorological correction

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Embodiment Construction

[0035] The technical solution of the present invention will be described below with reference to the accompanying drawings.

[0036] The core idea of ​​the present invention is to use an unmanned aerial vehicle to determine the meteorological elements at various points on the propagation path of the ranging signal, thereby eliminating the representative errors of meteorological elements caused by traditional technical methods.

[0037] The distance measurement signal of the present invention includes electromagnetic waves, lasers, and infrared light. The photoelectric distance measurement instrument refers to an instrument that uses at least one of the aforementioned distance measurement signals to perform distance measurement, including but not limited to laser rangefinders, Total station, three-dimensional laser scanner.

[0038] See figure 1 , The embodiment of the present invention provides a system for meteorological correction of photoelectric ranging, including:

[0039] The gr...

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Abstract

The invention provides a method and system for photoelectric ranging meteorological correction. An unmanned aerial vehicle and a corresponding ground control module are arranged, and wireless communication of a ground control system and the unmanned aerial vehicle is established; a communication module, a GNSS module, a temperature sensor, a barometric sensor, a humidity sensor and a storage module are arranged on the unmanned aerial vehicle in a carrying mode; the unmanned aerial vehicle flies back and forth along a designed air route, a photoelectric ranging instrument performs repeated ranging on a target point many times in the period, and meteorological elements on a ranging signal transmission route are measured while ranging is performed; the average value of temperature, barometric pressure, humidity and distance is solved, and meteorological correction is achieved. The system is simple in structure, and labor division of modules is clear, steps of the method are clear, and the scheme can be achieved easily. By means of the method and system, the meteorological elements on the ranging signal transmission route can be accurately measured, meteorological element representativeness in the prior art can be greatly reduced, and therefore photoelectric ranging precision is improved, and a reliable guarantee is provided for high-precision measurement.

Description

Technical field [0001] The invention belongs to the field of geodesy and engineering surveying, and particularly relates to a method and system for meteorological correction of photoelectric distance measurement. Background technique [0002] Currently, photoelectric ranging is widely used in the field of geodetic surveying and engineering surveying. The so-called photoelectric ranging includes electromagnetic wave ranging, laser ranging and infrared light ranging. Typical instruments include laser rangefinders, total stations, and three-dimensional laser scanners. As light waves or electromagnetic waves propagate in the atmosphere, they will produce speed changes and cause non-negligible effects. Therefore, in order to obtain high-precision ranging results, meteorological corrections need to be applied to the distance observations. Due to the limitation of conditions, the most commonly used method is to measure meteorological elements such as dry and wet temperature and air pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/08G01S7/48
CPCG01S7/48G01S17/08
Inventor 章迪郭际明梅文胜巢佰崇李昕周吕胡纪元王高靖许毅蔡婧王威赵胤植
Owner WUHAN UNIV
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