Unmanned airship low-altitude photogrammetry

Abstract

The invention relates to an unmanned airship low-altitude photogrammetry, which comprises an unmanned airship consisting of a main air bag, a vice air bag, a stern rudder and an engine car, a flight controller, a three-axis stabilized holder and a digital camera, wherein the vice air bag fixed in the main air bag is arranged according to the volume with certain proportion and can be adjusted. According to the practical situation of a measurement region, an airline plan is firstly made, the flight path, the strip interval, the photographing interval and the flight altitude are calculated in advance, and the data is transmitted to and stored by the flight controller; the unmanned airship is controlled by the flight controller after taking off by remote control, and the flight controller controls the stern rudder and the engine to operate the airship to fly according to the pre-determined airline and speed; in flight, the flight controller controls the digital camera fixed on the three-axis stabilized holder to take photos over the ground according to specified distance and / or time intervals; and compared with the conventional photogrammetry, the invention has the characteristics of high mobility, low cost and high security, and is suitable for mapping large scale topographical maps of medium and small areas.

Description

Technical field: [0001] The invention belongs to the field of surveying and mapping science and technology, in particular to a low-altitude photogrammetry device and method based on an unmanned airship. Background technique: [0002] With the development of surveying and mapping science and technology and the national economy, resource and ecological environment investigation, detection and evaluation, e-government, digital city and major engineering construction all require realistic and high-precision topographic map data. How to quickly and accurately obtain and update basic data has always been a long-term concern of the national infrastructure department. If low-altitude photogrammetry below 500 meters can be realized, it can completely get rid of the influence of cloud cover and satisfy the surveying and mapping of large-scale topographic maps of 1:2000 to 1:500 in small and medium areas. Invention content: [0003] The invention provides a low-altitude photogrammet...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a low-altitude photogrammetry method for an unmanned airship, which is beneficial to overcome the shortcomings of traditional photogrammetry such as high cost, strict aviation control, insufficient flexibility, and inability to perform small-scale measurement, and can satisfy large-scale topographic map surveying and mapping of small and medium areas

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