Method and system for photoelectric ranging meteorological correction

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...

AI Technical Summary

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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