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A mobile satellite news gathering system using a flat antenna

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9 Author(s)
Mitsumoto, H. ; NHK Sci. & Tech. Res. Labs., Tokyo, Japan ; Murata, T. ; Takano, K. ; Fujita, M.
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We propose a mobile SNG (satellite news gathering) RF terminal that transmits TV programs from a ship or a vehicle to a broadcasting center in real time via a communications satellite. The terminal consists of a transmitter using beam steering flat antenna with 16 subarrays and of a turntable and pitch-roll stabilizer for mechanical tracking. The antenna beam is steered according to a received beacon signal, and rapid tracking with an accuracy of 0.05° cart be achieved even if slant angles in the pitch and roll of the ship in which the terminal is set, are ±10° and ±15°. We demonstrated the good performance of the terminal by transmitting a TV program from a ship in Tokyo Bay

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Broadcasting, IEEE Transactions on  (Volume:42 ,  Issue: 3 )