Title :
A mobile satellite news gathering system using a flat antenna
Author :
Mitsumoto, H. ; Murata, T. ; Takano, K. ; Fujita, M. ; Tanaka, S. ; Itoh, S. ; Shogen, K. ; Toyama, N. ; Miyazawa, H.
Author_Institution :
NHK Sci. & Tech. Res. Labs., Tokyo, Japan
fDate :
9/1/1996 12:00:00 AM
Abstract :
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
Keywords :
antenna arrays; antenna radiation patterns; electronic news gathering; mobile antennas; mobile satellite communication; satellite antennas; satellite tracking; television antennas; television broadcasting; transmitting antennas; TV programs transmission; Tokyo Bay; antenna beam steering; broadcasting center; communications satellite; flat antenna; mechanical tracking; mobile SNG RF terminal; mobile satellite news gathering system; performance; pitch-roll stabilizer; received beacon signal; ship; slant angles; subarrays; transmitter; turntable; vehicle; Artificial satellites; Beam steering; Marine vehicles; Mobile antennas; Radio frequency; Satellite antennas; Satellite broadcasting; TV broadcasting; Transmitters; Transmitting antennas;
Journal_Title :
Broadcasting, IEEE Transactions on
