Title:
移動無線局の位置を決定する測位システム、プログラムおよび位置決定方法
Document Type and Number:
Japanese Patent JP4093792
Kind Code:
B2
Abstract:
A wireless apparatus for determining a phase difference of a received RF signal, and method. The apparatus includes antennas displaced from each other by a predetermined distance for receiving an RF signal. The apparatus also includes an exclusive OR (EXOR) circuit comparing binary signals derived from the received RF signal that are associated with respective antennas. An absolute phase difference is based on a pulse width of the comparison.
Inventors:
Teruhisa Ninomiya
Isamu Yamada
Isamu Yamada
Application Number:
JP2002116808A
Publication Date:
June 04, 2008
Filing Date:
April 18, 2002
Export Citation:
Assignee:
富士通株式会社
International Classes:
G01S3/48; G01S5/04; G01S5/08; H04W4/02; H04W64/00
Domestic Patent References:
| JP6241817A | ||||
| JP5188128A | ||||
| JP2007516U | ||||
| JP63140911A | ||||
| JP11128433A | ||||
| JP7280909A | ||||
| JP64016979A |
Attorney, Agent or Firm:
Mitsuharu Kawakami