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Title:
MOVABLE BODY POSITION MEASURING SYSTEM, CENTRAL PROCESSING UNIT, AND QUESTION CONTROL METHOD USED THEREIN
Document Type and Number:
WIPO Patent Application WO/2013/121694
Kind Code:
A1
Abstract:
A movable body position measuring system includes at least one or more transmitting/receiving stations (1-1 to 1-5) that transmit question signals to movable bodies (aircrafts 5). The transmitting/receiving stations restrict the question signal transmission coverage to the question and response coverage of an SSR mode A/C that is a mode in which questions common to all movable bodies are made, while making individual questions of an SSR mode S that is a mode in which individual questions and responses can be made. A central processing unit (2) has a means for controlling the transmitting/receiving stations to make individual questions of the SSR mode S for the movable bodies in order of importance to air-traffic control, starting with a movable body having the highest importance. This provides a movable body position measuring system that can improve the reliability and safety of multi-lateration system.

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Inventors:
KITAJIMA MASAAKI (JP)
SATO TAKESHI (JP)
KONDO TEMPEI (JP)
Application Number:
PCT/JP2013/000227
Publication Date:
August 22, 2013
Filing Date:
January 18, 2013
Export Citation:
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Assignee:
NEC CORP (JP)
KITAJIMA MASAAKI (JP)
SATO TAKESHI (JP)
KONDO TEMPEI (JP)
International Classes:
G01S13/91; G01S5/06; G01S13/76; G08G5/00
Foreign References:
JPH075255A1995-01-10
US20020063653A12002-05-30
JP2011209211A2011-10-20
JPS61256272A1986-11-13
JP2010211517A2010-09-24
JP2009300146A2009-12-24
JP2010230448A2010-10-14
Other References:
YOSHIO HASHIDA ET AL.: "Secondary Surveillance Radar for Air Traffic Control - SSR Mode S", TOSHIBA REVIEW, vol. 59, no. 2, February 2004 (2004-02-01), pages 58 - 61, Retrieved from the Internet
TAKASHI YOSHIDA: "Radar engineering revised edition", THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS, 1 October 1996 (1996-10-01), pages 227 - 233
Attorney, Agent or Firm:
IEIRI, Takeshi (JP)
House ON 健 (JP)
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