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초소형 비행체의 영상 전송을 위한 1GHz 대역 송신기의 특성해석
이유종,박필진 동의대학교 산업기술개발연구소 2001 産業技術硏究誌 Vol.15 No.-
Characteristics of an L-band transmitter and a receiver are examined which can be used for real time image transmission from micro-aerial vehicle(MAV) and/or autonomous vehicle system to the ground station. Transmitter power is sub-50 mWatts and uses 970 MHz carrier frequency for frequency modulation (FM) of real time NTSC image signal. Antenna shows pseudo-omnidirectional radiation pattern and excellent impedance matching characteristics at the operating frequency. Real time image transmission/ reception and image data compression using mpeg encoder are performed with notebook PC from a moving vehicle, which results in very encouraging image quality applicable to surveillance and observation using MAV.
초소형 비행체 응용을 위한 1 GHz 대역 실시간 동영상 압축 송.수신
이유종(Y.J.Lee),박필진(P.J.Park),김창규(C.K.Kim) 동의대학교 정보통신연구소 2001 정보통신연구지 Vol.1 No.-
Transmission and MPEG encoding characteristics of real time moving picture images using L-band transmitter and receiver which can be used for micro-aerial vehicle(MAV) application are reported. NTSC picture images are transmitted from a moving vehicle with transmitter power of 50 mWatts at 970 MHz carrier frequency for frequency modulation(FM). Received signal is demodulated and compressed with an MPEG encoder installed in a notebook PC in real time. MPEG images show favorable data reduction ration greater than 100 from uncompressed data and also show better image quality and continuity than those of avi images. Experiments show very encouraging image quality applicable to MAV surveillance and observation.