• Journal of The Geomorphological Association of Korea
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• v.28 no.4
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• pp.41-52
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• 2021

With the popularization of drones and the ease of use of the Global Navigation Satellite System (GNSS), drone photogrammetry for terrain information has been widely used. Drone photogrammetry enables the realization of high-accuracy three-dimensional topography for the entire area with less effort and time compared to the past direct survey using GNSS or total station. From 3-D topographic data, various topographical analysis is possible. To improve the accuracy of drone photogrammetry, direct GCP surveying in the field is essential, and the numbers and reasonable positioning of GCPs are very important. In the case of beaches or tidal flats on the west coast of Korea, the numbers and location of GCPs are important factors in efficient drone photogrammetry because of the size of the area, difficulties of movement, and the risk from tides. If the RTK (Real-time kinematic) or PPK (Post-processed kinematic) method is used, the increased accuracy of the drone's location enables high-accuracy photogrammetry with a small number of GCPs. This study presents an efficient drone photogrammetry method in terms of time and economy by comparing and analyzing the results of drone photogrammetry using Non-PPK with low-cost PPK-Kit, based on the tests of various numbers and locations of GCPs in the university field including various slopes and structures like coastal terrain.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.10a
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• pp.71-74
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• 2016

재난지역의 영상 촬영 및 물품 조달 등 인간이 직접 수행하기 어려운 임무를 대신하기 위해 드론이 사용된다. 시중에 판매되고 있는 드론들은 비행과 영상촬영 기능을 모두 제공하지만 firmware 및 응용프로그램 소스코드가 제한적으로 공개되어 있어 일반 개발자가 드론의 firmware를 수정하거나 센서 및 카메라를 직접 제어할 수 없다는 단점이 있다. 하지만 개발자의 목적에 맞는 드론의 비행 시스템을 구축하기 위해서는 시스템 내부의 제어코드를 직접 수정할 필요성이 있다. Pixhawk는 firmware 및 관련 application의 개발에 대한 소스 코드가 공개되어 있고, 일반 개발자들의 접근이 상대적으로 용이하다는 장점이 있다. 본 프로젝트에서는 Pixhawk와 3D Robotics 사에서 제공하는 Drone-Kit Platform을 활용하여 조난 상황에 대한 인명 구조 시스템을 설계하고, 응급상황에 대한 드론 제어 시스템을 구현하였다.

• Aerospace Engineering and Technology
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• v.13 no.1
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• pp.153-165
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• 2014

Multi-rotor UAVs are utilized in various fields because of the advantages such that a hovering capability such as helicopters, a simple structure and a relatively high thrust. Recently, AR.Drone manufactured by Parrot is easily operated by beginner due to its internal stabilization loop in the on-board computer and it can be easily applied on various researches for the multi-rotor UAVs by providing an SDK(Software Development Kit). Further this platform can be suitably used for application to swarm flight since it is low cost and relatively small. Therefore, in this paper, we introduce the development process of the controller for indoor swarm flight by using the AR.Drone.