Title:
測位信号を送信するための装置、その装置を備える測位システムおよび測位信号を送信するシステム
Document Type and Number:
Japanese Patent JP4848146
Kind Code:
B2
Abstract:
An apparatus that can transmit a signal enabling higher accuracy of calculating positional information is provided. A transmitting apparatus 200 transmitting a positioning signal includes an oven controller crystal oscillator (OCXO) 210 having a thermostatic oven that keeps the temperature of a quartz resonator constant and oscillates such that variation in output frequency caused by the ambient temperature change is minimized, a voltage controlled oscillator (VCO) 220 outputting a signal modulated in accordance with the signal from OCXO 210, multipliers 240 and 260, a code generator 230 outputting code patterns for respectively identifying each of artificial satellites on which the transmitting apparatus 200 is mounted to multiplier 240, a memory 250 storing a navigation message, a transmitting portion 280, and an antenna 290.
Inventors:
Hideyuki Torimoto
Ivan Petrovsky
Ivan Petrovsky
Application Number:
JP2005196322A
Publication Date:
December 28, 2011
Filing Date:
July 05, 2005
Export Citation:
Assignee:
Funai Electric Co., Ltd.
Positioning Satellite Technology Co., Ltd.
Positioning Satellite Technology Co., Ltd.
International Classes:
G01S19/02; G01S19/44; H04B1/69; H04B1/707; H04W64/00
Domestic Patent References:
| JP7098372A | ||||
| JP62077938U | ||||
| JP2004205525A | ||||
| JP7113860A |
Foreign References:
| WO2003027703A1 |
Attorney, Agent or Firm:
Fukami patent office