초록 ▼

A mobile receiver for satellite broadcast comprises directive antennas, a navigation unit for generating a navigation signal representing a position and an attitude of an airplane, a control unit for generating a control signal for controlling the antennas, on the basis of the navigation signal from

A mobile receiver for satellite broadcast comprises directive antennas, a navigation unit for generating a navigation signal representing a position and an attitude of an airplane, a control unit for generating a control signal for controlling the antennas, on the basis of the navigation signal from the navigation unit and prestored information indicating a position of a broadcasting satellite, and a drive unit for driving the antennas in response to the antenna control signal from the control unit to orient the directivity of the antennas toward the broadcasting satellite.

대표청구항 ▼

A mobile receiver for a satellite broadcast that includes a video image signal, comprising: a radome having a lightning arrester mounted thereon; a plurality of directional antennas constructed to receive the satellite broadcast, said antennas being covered by said radome and mounted to correspondin

A mobile receiver for a satellite broadcast that includes a video image signal, comprising: a radome having a lightning arrester mounted thereon; a plurality of directional antennas constructed to receive the satellite broadcast, said antennas being covered by said radome and mounted to corresponding drives that adjust inclinations and rotation angles of the respective antennas; an inertial navigation unit for generating a navigation signal representing a position and an attitude of an airplane; control means for generating an antenna control signal for controlling the antenna drives, based on the navigation signal from said navigation unit and pre-stored information indicating a position of the satellite, the antenna drives adjusting the inclinations and rotation angles of said antennas in accordance with the antenna control signal from said control means to orient said antennas toward the satellite; and composition means for in-phase combining outputs from said antennas in an intermediate frequency (IF) band; said lightning arrestor including a metal member oriented longitudinally of said radome and a plurality of metal members oriented laterally of said radome and crossing said longitudinally oriented metal member at crossing points spaced longitudinally along said radome, the metal members of said lightning arrestor being disposed relative to said antennas such that each antenna is situated beneath a corresponding crossing point, and such that the combination of outputs from said antennas has a substantially constant level regardless of the position and attitude of the airplane during receipt of the satellite broadcast.