Title:
衛星通信システムにおけるアンテナ方向調整方法、可搬局装置およびアンテナ方向調整プログラム
Document Type and Number:
Japanese Patent JP7318806
Kind Code:
B2
Abstract:
A portable station stores satellite information related to the longitude and the beacon signal of a plurality of communications satellites, executes a rough adjustment process of computing an antenna direction with respect to a target communications satellite on the basis of the longitude of the target communications satellite acquired from the satellite information and an installation location of the portable station itself, and roughly adjusting the antenna direction of the portable station itself in the computed antenna direction, and executes a fine adjustment process of, in a case where the frequency of a beacon signal is a predetermined frequency of the target communications satellite, measuring the beacon signal while increasing or decreasing the azimuth by treating the azimuth of the roughly adjusted antenna as a reference direction, and in a case where a measurement result of a beacon signal matches the information related to the beacon signal from another communications satellite at the longitude that is stored in the satellite information, aligning the azimuth of the antenna with the reference direction and finely adjusting the antenna direction such that the receive level of the beacon signal is maximized. With this arrangement, the antenna direction can be adjusted correctly using only the beacon signal.
Inventors:
Koichi Harada
Masaki Shima
Daiki Shibayama
Fumihiro Yamashita
Masaki Shima
Daiki Shibayama
Fumihiro Yamashita
Application Number:
JP2022512947A
Publication Date:
August 01, 2023
Filing Date:
March 30, 2020
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04B7/155
Domestic Patent References:
| JP5592983B1 | ||||
| JP2012175217A |
Foreign References:
| US20020050953 | ||||
| US6724737 |
Attorney, Agent or Firm:
Patent Attorney Takada / Takahashi International Patent Office