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무인기 체계 적용을 위한 DVB-S2 기반 T4급 공용데이터링크 성능 개선방안
배종태,백성호,오지명,이상필,송충호,Bae, Jongtae,Baek, Seongho,Oh, Jimyung,Lee, Sangpill,Song, Choongho 한국정보통신학회 2022 한국정보통신학회논문지 Vol.26 No.12
The sophistication and diversification of mission equipment for surveillance and reconnaissance is leading to a demand for large-capacity public data links. Overseas, a T4 class(274Mbps) common data link was applied to the Global hwak, a high-altitude unmanned aerial vehicle, and various research and development are being conducted in Korea. In this paper, we propose a structure in which pilot is additionally applied to improve SNR performance while minimizing data transmission rate loss in the DVB-S2 frame structure, which is a european satellite broadcasting standard, for high-capacity transmission of T4 class or higher in the common data link. For the performance evaluation of the proposed structure, the performance of the DVB-S2 was compared and analyzed by simulating the UAV data link channel environment. As a result of simulation, 0.15% of transmission rate loss occurred at T4 class transmission rate compared to DVB-S2 in the proposed structure, but improved SNR reception performance of 0.2~0.3dB was confirmed in the UAV channel environment.