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A mobile satellite news gathering system using a flat antenna

1996; Institute of Electrical and Electronics Engineers; Volume: 42; Issue: 3 Linguagem: Inglês

10.1109/11.536591

1557-9611

Hideo Mitsumoto, Takuya Murata, Kouichi Takano, Masaru Fujita, Shōji Tanaka, Shoji Itoh, Kazuyoshi Shogen, N. Toyama, H. Miyazawa,

Underwater Vehicles and Communication Systems

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/spl deg/ cart be achieved even if slant angles in the pitch and roll of the ship in which the terminal is set, are /spl plusmn/10/spl deg/ and /spl plusmn/15/spl deg/. We demonstrated the good performance of the terminal by transmitting a TV program from a ship in Tokyo Bay.