• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.85-87
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• 2012

This paper, UAVs of the secondary communication link that applies to the analysys of time-division communication system and communication method proposed algorithm has been developed. UAVs of the important characteristics of the data link latency and throughput, the frequency is availability, weight. The data needed to operate UAVs vehicle control data, status data, there is an acquisition. Control and data acquisition will require real-time communication. Based on the requirements being applied to the secondary communication link communication method were compared and analyzed. The results of analysis of ground-base TDD method is suitable.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2013.05a
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• pp.783-785
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• 2013

In this paper, analyzed of UAVs operation altitude and range from the point of view of the data link. UAVs operation altitude is determined by the specification of the mission equipment and operational purposes. The link-of-sight analysis of data link equipment before deciding the unmanned aircraft operation altitude conditions should be considered. If GDT=0m installation then 32dBi antenna apply 13,724 meter is operation altitude. 44dBi antenna 6,657 meters. Operating altitude perspective, high-gain antenna is recommended of the long range communication.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.6
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• pp.1414-1418
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• 2013

In this paper, analyzed of UAVs operation altitude and range from the point of view of the data link. UAVs operation altitude is determined by the specification of the mission equipment and operational purposes. The link-of-sight analysis of data link equipment before deciding the unmanned aircraft operation altitude conditions should be considered. If GDT=0m installation then 32dBi antenna apply 15,779 meter is operation altitude. 44dBi antenna 7,927 meters. Operating altitude perspective, high-gain antenna is recommended of the long range communication.

• Aerospace Engineering and Technology
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• v.12 no.2
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• pp.118-122
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• 2013

In this study, We show that multiple UAVs (Unmaned Air Vehicle) have datalink system which includes the IEEE 802.11b technology. we are predicting and calculating to the number of the UAV and data rate between UAV and ground control system, using the IEEE 802.11 standards which include the transmit/receive the delay time and theoretical maximum throughput (TMT).

• Journal of Convergence for Information Technology
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• v.9 no.11
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• pp.118-124
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• 2019

As Unmanned Aerial Vehicles technology has been widespread, various types of unmanned aircraft and mission equipment have been developed in line with mission diversification. Especially in Korea, small unmanned aerial vehicles have been actively developed. In addition, flight control system and mission equipment interface system for effective control of small unmanned aerial vehicles, efficient communication system configuration and operation for transmission to ground operated systems by processing data are required. This paper addresses efficient system structure and operation of communication equipment for missions and control of small unmanned aerial vehicles.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.30 no.2A
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• pp.66-79
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• 2005

In this paper, we have performed the analysis of RF transceiver system and communication link for the improvement in reliability of Smart-UAV(Unmanned Aerial Vehicles) Data-Link. The system analysis performed using the development specification of the data link and data sheet of using components through the system simulation tool that is Agilent EEsof ADS. Also, the communication link analysis peformed using a variety of propagation models for the smart UAV operation environments. As a result, we have presented problems appeared in the simulation results and development specification. As well as, we have presented about several problems and consideration issue for system design through the communication link analysis.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1179-1180
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• 2023

국방 분야의 데이터링크 기술은 다양한 군사 응용 분야에서 무인 항공기 및 다른 무인시스템과의 효율적인 통신을 위한 것으로 국내 국방 공용 데이터링크 기술 내용 및 대형/소형 무인이동체 장비 형상을 확인하였다. 소형 무인이동체 데이터링크를 지원하기 위하여 사용되는 기술 현황을 확인하고 문제점을 식별하였다. 마지막으로 향후 군 요구 사항을 충족하기 필요성 및 관련 세부 기술 개발 내용을 제시하였다.

• Electronics and Telecommunications Trends
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• v.30 no.3
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• pp.74-83
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• 2015

무인기의 기술 발전에 따른 운송, 통신중계, 교통감시, 산불감시 진화, 재해 재난대처 등 무인기의 민간 및 공공 수요 확대로, 무인기는 국가 공역으로의 운항이 요구되고 있으며 국가 공역으로의 안전한 진입을 위해서는 유인항공기 조종사에 의한 시각 감지 및 회피와 동일한 수준의 안전성을 제공하는 탐지회피 능력과 함께 신뢰성 높은 무인기 제어용 통신링크 확보가 필수적으로 요구되고 있다. 따라서, 본고에서는 무인기 제어용 통신링크에서 요구되는 기술적 특징 및 국내외 기술/표준화 동향을 파악하고 고신뢰성 무인기 제어용 통신링크 확보를 위한 기술적 및 표준화 이슈를 살펴보고자 한다.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.44 no.4
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• pp.316-323
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• 2016

A UAV(Unmanned Aerial Vehicle) flies along pre-programed navigation points(in-flight, take-off, or landing) automatically without pilot input. Even though UAVs fly differently from general piloted aircraft as the pilot controls the aircraft from a ground station through means of a data-link system. Occasionally, the data-link connection can be lost for any number of reasons, in which case, the FLCC(Flight control Computer) must automatically switch to autopilot to continue flying. Hence, the FLCC is a flight-critical component that must be throughly tested and validated. This paper discusses the development of a HILS(Hardware in the Loop Simulation) test environment designed to simulate real flight conditions to verify the FLCC satisfies flying quality requirements and maintains robustness despite any potential malfunctions or emergency situations.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.35 no.2
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• pp.171-176
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• 2007

The tracking antenna must always point to track moving vehicle for data link. In this paper, we determine pointing angle from the geometric relationship of antenna and UAV(Unmaned Aerial Vehicle) to let an antenna be toward a moving vehicle. The pointing angle of antenna is set through GPS measurement data installed in antenna and UAV. We verify the performance of this system from the fixing a camcoder on the antenna.