IN2014DN06214A - - Google Patents

Info

Publication number
IN2014DN06214A
IN2014DN06214A IN6214DEN2014A IN2014DN06214A IN 2014DN06214 A IN2014DN06214 A IN 2014DN06214A IN 6214DEN2014 A IN6214DEN2014 A IN 6214DEN2014A IN 2014DN06214 A IN2014DN06214 A IN 2014DN06214A
Authority
IN
India
Prior art keywords
question
signals
transmitting apparatuses
transmitted
transmitting
Prior art date
Application number
Inventor
Takeshi Sato
Tempei Kondo
Masaaki Kitajima
Original Assignee
Nec Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nec Corp filed Critical Nec Corp
Publication of IN2014DN06214A publication Critical patent/IN2014DN06214A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/78—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted discriminating between different kinds of targets, e.g. IFF-radar, i.e. identification of friend or foe
    • G01S13/781—Secondary Surveillance Radar [SSR] in general
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar
    • G01S13/878—Combination of several spaced transmitters or receivers of known location for determining the position of a transponder or a reflector
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/06—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

An aircraft position measuring system comprises at least one or more transmitting apparatuses (3) that transmit to a movable body (4) question signals used for acquiring response signals. A central station (1) comprises: a question signal determining means that determines as question control information the question signals which are to be transmitted by the transmitting apparatuses and transmission times at which the question signals are to be transmitted by the transmitting apparatuses; and a means that transmits to the transmitting apparatuses the question control information determined by the question signal determining means. The question signal determining means which includes a means for determining a system status every first time frame that is a time interval obtained by division using a predetermined time width determines on the basis of the system status the question signals which are to be transmitted by the transmitting apparatuses and the transmission times at which the question signals are to be transmitted by the transmitting apparatuses. This provides a movable body position measuring system that can immediately transmit question signals to an aircraft which requires the question signals while restricting the number of question signal transmissions below a specified upper limit without transmitting unnecessary question signals.
IN6214DEN2014 2012-02-15 2013-02-13 IN2014DN06214A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012030052 2012-02-15
PCT/JP2013/000759 WO2013121775A1 (en) 2012-02-15 2013-02-13 Movable body position measuring system, central station, question control method used therein, and storage medium on which program thereof has been stored

Publications (1)

Publication Number Publication Date
IN2014DN06214A true IN2014DN06214A (en) 2015-10-23

Family

ID=48983908

Family Applications (1)

Application Number Title Priority Date Filing Date
IN6214DEN2014 IN2014DN06214A (en) 2012-02-15 2013-02-13

Country Status (4)

Country Link
JP (1) JP5892233B2 (en)
KR (1) KR101640335B1 (en)
IN (1) IN2014DN06214A (en)
WO (1) WO2013121775A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6065041B2 (en) * 2015-03-13 2017-01-25 日本電気株式会社 Signal processing control device, signal processing control method, secondary monitoring radar system, and computer program
WO2017212636A1 (en) * 2016-06-10 2017-12-14 三菱電機株式会社 Position measurement system, position measurement device, and reception device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5825322A (en) * 1993-05-19 1998-10-20 Alliedsignal Inc. Method and apparatus for rotating an electronically-scanned radar beam employing a variable-dwell scanning process
JP2006208026A (en) * 2005-01-25 2006-08-10 Toshiba Corp Secondary monitoring radar controller, and secondary monitoring radar control method
KR100753054B1 (en) * 2005-12-30 2007-08-31 한국생산기술연구원 Network connection management system for fault tolerant in module based personal robot and method thereof, and recording medium thereof
JP4679500B2 (en) * 2006-12-12 2011-04-27 株式会社東芝 ADS-B ground station
DE602008001590D1 (en) * 2007-09-27 2010-08-05 Toshiba Kk Secondary S-mode surveillance radar
JP5125784B2 (en) 2008-06-11 2013-01-23 日本電気株式会社 Aircraft position measurement system, signal type determination method, center station, and program
JP5115580B2 (en) * 2010-03-30 2013-01-09 日本電気株式会社 Multilateration system, signal processing method for multilateration receiving station, and processing program therefor

Also Published As

Publication number Publication date
WO2013121775A1 (en) 2013-08-22
KR20140121840A (en) 2014-10-16
JPWO2013121775A1 (en) 2015-05-11
KR101640335B1 (en) 2016-07-15
JP5892233B2 (en) 2016-03-23

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