Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate
2004-10-29
2009-10-27
Tarcza, Thomas H (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
C342S357490, C701S208000
Reexamination Certificate
active
07609202
ABSTRACT:
A measuring system wherein radio waves from a GPS satellite (4) are received by a reference station (1) and a plurality of mobile stations (3) to perform relative measuring among particular stations, thereby measuring the shift amounts of the mobile stations (3). At least one of the mobile stations (3) is disposed such that a baseline limit length allowing relative measuring relative to the reference station (1) is exceeded, and the intervals between particular mobile stations (3) are shorter than the baseline limit length allowing relative measuring. Each of the stations (1, 3) is equipped with a GPS receiver (11, 21) that receives the radio waves from the GPS satellite (4), and further equipped with a wireless communication apparatus (12, 22) that transmits/receives data to/from a particular station. There are provided a relative shift amount calculation part (32) for calculating the relative shift amount between the particular stations; and a reference relative-shift-amount calculation part (33) for determining, based on a reference relative-shift-amount of one station that performs a relative measuring, a reference relative-shift-amount of the other station.
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Abe Takenori
Fujita Takashi
Ito Keiji
Terada Yukihiro
Hitachi Zosen Corporation
Kusner & Jaffe
Liu Harry
Tarcza Thomas H
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