• 전자통신동향분석
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• 제33권4호
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• pp.70-80
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• 2018

Drones are now widely used in civilian applications such as filming, leisure, agricultural control, monitoring, and the generation of 3D-spatial information, deviating only from military drones. In the field of logistics, prototypes are emerging in the area of logistics transportation, and to develop a future transportation service under the name of a drone tax, each country is introducing its first flight results using its own unique drones. In this paper, we review the domestic and overseas trends of drone delivery service technology, which requires various capabilities such as automatic flight, and review the related core technologies. We then propose the flight capability and road map of a drone delivery service according to the detailed conditions such as the flight area, visibility, and flight method. Additionally, in connection with the postal processing of the Korea Post Office, which would be a main demand for this type of service, we describe a method for realizing a drone delivery service based on the structure, scenario, and deployment of the drone delivery system.

• Advances in aircraft and spacecraft science
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• 제10권6호
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• pp.495-519
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• 2023

The drone serves the customers not served by vans. At the same time, considering the safety, policy and terrain as well as the need to replace the battery, the drone needs to be transported by truck to the identified station along with the parcel. From each such station, the drone serves a subset of customers according to a direct assignment pattern, i.e., every time the drone is launched, it serves one demand node and returns to the station to collect another parcel. Similarly, the truck is used to transport the drone and cargo between stations. This is somewhat different from the research of other scholars. In terms of the joint distribution of the drone and road vehicle, most scholars will choose the combination of two transportation tools, while we use three. The drone and vans are responsible for distribution services, and the trucks are responsible for transporting the goods and drone to the station. The goal is to optimize the total delivery cost which includes the transportation costs for the vans and the delivery cost for the drone. A fixed cost is also considered for each drone parking site corresponding to the cost of positioning the drone and using the drone station. A discrete optimization model is presented for the problem in addition to a two-phase heuristic algorithm. The results of a series of computational tests performed to assess the applicability of the model and the efficiency of the heuristic are reported. The results obtained show that nearly 10% of the cost can be saved by combining the traditional delivery mode with the use of a drone and drone stations.

• 한국안전학회지
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• 제34권6호
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• pp.88-95
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• 2019

It has been only a few years since drones have been introduced to Korea, and as the use of drones has increased in industrial sites as well as in hobby activities, accidents such as workers' body parts coming into contact with rotating propellers have been occurring since 2016. Industrial accident cases are being filed. In the case of a remote control vehicle, if you release the remote controller in the event of an abnormal situation, it stops in place and no further danger occurs but in case of drones flying over the sky is different. Sudden motor stops during flight, uncontrolled changes in flight posture, loss of radio waves, loose propeller, etc, numerous factors can lead to accidents due to unintentional movements. Therefore, drone operators need safety knowledge as well as high knowledge about drones. However, drones with a weight of less than 12 kg can fly without a pilot's certification, and therefore, a minimum accident prevention measure is required. 10 accidents approved as industrial accidents since 2016, 23 accidents surveyed by general drone operator, 40 accidents surveyed by the Korean Consumer Resources Unfortunately for the purpose of writing this paper, drones are a new species and do not have many parameters for analysis but my experience has shown that the type of disaster does not deviate significantly. In addition, there is no paper that analyzes drone related industrial accidents not only in Korea but also in other countries. However, even if you watch an overseas drone accident video through YouTube, it is not much different from the case that occurs in Korea. I hope that this study will be of little help to all the drone pilots as well as the work safety of industrial drones used in industrial sites.

• 한국항행학회논문지
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• 제24권6호
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• pp.491-499
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• 2020

「드론법」 제정으로 드론의 법적 근거를 마련함과 항공안전법상의 안전규제를 유예 또는 면제시키는 등 드론산업 육성정책에도 불구하고 드론의 정의가 명확하지 않아서 상업적 활용을 위해서는 여전히 논의가 필요하다. 따라서, 국내외 사례조사와 현행 항공법의 문제점을 분석한 결과, 현행 드론법에서 「조종자가 탑승하지 아니하고, 자체중량이 150 kg 이하인 무인비행기」라고 정의되어 있으나, 실제 조종사가 탑승해야 하고 드론택시의 자체중량이 150 kg 이상인 점 등 여러 문제점이 발견되었다. 따라서 드론택시에 대한 정의로 "드론" 이란 원격·자동·자율 등의 방식에 따라 항행하는 비행체로서 국토교통부령으로 정하는 「항공안전법」 제2조제3호에 따른 무인비행장치(단, 자체중량이 300 kg이하 또는 무게 제한 없음) 또는 「항공안전법」 제2조 제6호에 따른 무인항공기로 정의할 것을 제안하였다.

• 항공우주시스템공학회지
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• 제15권6호
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• pp.33-41
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• 2021

As interest in drones controlled by remote technology rapidly increases worldwide, drones are used in many fields such as military, rescue, and transportation as future innovations in many countries. In particular, as the drone has been spotlighted as a new future strategic industry, it is also used for public purposes such as disaster relief and crime investigation. However, security concerns such as the penetration of major national facilities, collisions with aircraft, and the possibility of privacy infringement due to aerial photography are also being raised. Unlike the increased interest in drones, there have been few studies on drone use, drone safety, and public attitudes toward drone use. This paper analyzed the perceptions of drone attitudes, drone stability and policy support for drones for Korean and United Kingdom.

• 한국항공운항학회지
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• 제28권4호
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• pp.132-140
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• 2020

The development status was studied to predict the concept of how drone taxis would be presented in daily life. the results of the analysis on traffic effects of drone taxis showed that they would be an innovative transportation option that could reach a distance of 60km, which would typically take an hour by car, within twenty minutes. Moreover, the economic analysis of existing aircraft development was limited to production (development investment) of the input budget. However, since the drone taxi is a new transportation system, an overall traffic platform, such as its own terminals, would need to be established. So, the production inducement effect was analyzed by dividing input budget into three factors; production, infrastructure, and service. The results indicate this to be an innovative project expected to have an economic ripple effect and reach a total of 24 trillion won after an investment of 13 trillion won (production + infrastructure + service) in Korea from 2020 to 2040.

• Journal of information and communication convergence engineering
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• 제18권1호
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• pp.28-32
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• 2020

Railway transportation is the main land-based transportation in most countries. Accordingly, railway-transportation safety has always been a key issue for many researchers. Railway pedestrian accidents are the main reasons of railway-transportation casualties. In this study, we conduct experiments to determine which of the latest convolutional neural network models and algorithms are appropriate to build pedestrian railroad accident prevention systems. When a drone cruises over a pre-specified path and altitude, the real-time status around the rail is recorded, following which the image information is transmitted back to the server in time. Subsequently, the images are analyzed to determine whether pedestrians are present around the railroads, and a speed-deceleration order is immediately sent to the train driver, resulting in a reduction of the instances of pedestrian railroad accidents. This is the first part of an envisioned drone-based intelligent security system. This system can effectively address the problem of insufficient manual police force.

• 한국ITS학회 논문지
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• 제17권6호
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• pp.144-152
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• 2018

본 연구는 기존 교통정보 수집체계의 한계를 보완하기 위한 수단으로써 드론을 사용하였을 경우 교통량, 속도, 밀도 등의 정보를 단시간에 경제적으로 수집 가능하다는 점에 착안하였으며, 이를 위해 드론을 실제 교통현장 촬영영상 분석을 통해 추출된 핵심 교통정보의 타당성 검증과 더불어 다양한 정보수집시나리오 분석을 통해 최적의 교통정보 추출 방법론을 제시하고자 하였다. 본 연구 수행결과, 드론은 단시간에 경제적인 교통정보수집이 가능한 유용한 정보수집 보완수단임은 물론, 매우 간단하고 직관적인 방법으로 연속류 구간의 서비스수준 판정을 가능하게 해 주는 강점이 있는 것으로 확인되었다.

• 한국군사과학기술학회지
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• 제21권6호
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• pp.817-825
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• 2018

Recently, drones have been used in various field to overcome time and space limitations. However, single drone still has a lot of restriction on transportation wight and travel time. Therefore many studies have been conducted to increase the utilization by swarm of drones. Many things should be additionally considered in order to operate swarming drones securely. Especially the group key management is a challenging research topic in tactical domain due to existence of adversary that has anti-drone skill. In this paper, we proposed an efficient group key management scheme for tactical swarming drone networks where an adversary equipped with anti-drone skills exists. The group key can be updated with a small number of message exchange compared to other convenience schemes. The numerical and simulation results demonstrate that the proposed scheme manages the group key efficiently and securely.

• Journal of Platform Technology
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• 제10권4호
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• pp.56-61
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• 2022

제4차 산업혁명을 통하여 발견된 다양한 융합기술은 산업에 스며들고 있다. 드론은 융합기술을 기반으로 건설, 교통, 국방 등의 산업에서 활용되고 있다. 회전익 드론 조종은 눈으로 보며 동작시키는 가시권에서부터 GCS를 활용한 원격지 비 가시권까지 다양한 범위에서 활용되고 있다. 산업용 드론을 운영하는 관계자를 분류하면 드론을 직접 활용하는 일반 조종자, 드론 조종자를 양성하는 교관, 드론의 상태를 점검하고 장기간 활용할 수 있게 하는 정비사 등이 있다. 드론 GCS의 화면은 어떠한 형태로 나타나느냐에 따라서 사용자의 빠른 대응, 또는 핵심적인 데이터를 획득할 수 있다. 이에 따라 본 연구에서는 미션플래너 GCS를 대상으로 GUI 특성을 분석하여 사용자에 따른 화면 구성방안을 설계하였다.