Title:
VELOCITY/DISTANCE DETECTION SYSTEM, VELOCITY/DISTANCE DETECTION APPARATUS, AND VELOCITY/DISTANCE DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2011/087088
Kind Code:
A1
Abstract:
Disclosed is a velocity/distance detection system provided with a transmitter and a receiver and detecting the distance between the transmitter and the receiver, wherein the transmitter transmits a composite frequency signal, and wherein the receiver is provided with: a receiving means for receiving the composite frequency signal transmitted from the transmitter; a calculating means for calculating a plurality of estimated power values or estimated amplitude values so that the difference between the plurality of estimated power values or estimated amplitude values falls within a target range; a velocity estimating means for estimating that the velocity at which the difference is within the target range is equal to the velocity of the transmitter or receiver; and a distance estimating means for extracting the phases of the plurality of frequency signals when the difference is within the target range, calculating the propagation delay time of the composite frequency signal between the transmitter and the receiver on the basis of the extracted phases, and estimating the distance between the transmitter and the receiver on the basis of the calculated propagation delay time.
Inventors:
HASHIZUME HIROMICHI (JP)
SUGIMOTO MASANORI (JP)
SATO TOMOHIKO (JP)
SUGIMOTO MASANORI (JP)
SATO TOMOHIKO (JP)
Application Number:
PCT/JP2011/050551
Publication Date:
July 21, 2011
Filing Date:
January 14, 2011
Export Citation:
Assignee:
KEK HIGH ENERGY ACCELERATOR (JP)
UNIV TOKYO (JP)
HASHIZUME HIROMICHI (JP)
SUGIMOTO MASANORI (JP)
SATO TOMOHIKO (JP)
UNIV TOKYO (JP)
HASHIZUME HIROMICHI (JP)
SUGIMOTO MASANORI (JP)
SATO TOMOHIKO (JP)
International Classes:
G01S11/14; G01P5/00
Domestic Patent References:
| WO2006112475A1 | 2006-10-26 | |||
| WO2006112475A1 | 2006-10-26 |
Foreign References:
| JP2009272707A | 2009-11-19 | |||
| JP2007528168A | 2007-10-04 | |||
| JPH0441899B2 | 1992-07-09 |
Other References:
TETSUYA SATO: "An Extension Method of Phase Accordance Method for Accurate Ultrasonic Localization of Moving Node", THE TRANSACTIONS OF THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS, vol. J92-A, no. 12, 1 December 2009 (2009-12-01), pages 953 - 963, XP008171305
See also references of EP 2525238A4
SATO TETSUYA; SUGIMOTO MASANORI; HASHIZUME HIROMICHI: "An Extension Method of Phase Accordance Method for Accurate Ultrasonic Localization of Moving Node", IEICE TRANSACTIONS, vol. J92-A, no. 12, December 2009 (2009-12-01), XP008171305
See also references of EP 2525238A4
SATO TETSUYA; SUGIMOTO MASANORI; HASHIZUME HIROMICHI: "An Extension Method of Phase Accordance Method for Accurate Ultrasonic Localization of Moving Node", IEICE TRANSACTIONS, vol. J92-A, no. 12, December 2009 (2009-12-01), XP008171305
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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Claims:
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