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MX9504994A - Sistema y metodo de deteccion de transpondedor. - Google Patents

Sistema y metodo de deteccion de transpondedor.

Info

Publication number
MX9504994A
MX9504994A MX9504994A MX9504994A MX9504994A MX 9504994 A MX9504994 A MX 9504994A MX 9504994 A MX9504994 A MX 9504994A MX 9504994 A MX9504994 A MX 9504994A MX 9504994 A MX9504994 A MX 9504994A
Authority
MX
Mexico
Prior art keywords
transponder
detection area
detection system
transponder detection
sum
Prior art date
Application number
MX9504994A
Other languages
English (en)
Inventor
Roger J O'connor
Robert C Knittle
Original Assignee
Hughes Aircraft Co
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 Hughes Aircraft Co filed Critical Hughes Aircraft Co
Publication of MX9504994A publication Critical patent/MX9504994A/es

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
    • G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
    • G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
    • G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
    • 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
    • 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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/42—Simultaneous measurement of distance and other co-ordinates
    • G01S13/44—Monopulse radar, i.e. simultaneous lobing
    • G01S13/4463—Monopulse radar, i.e. simultaneous lobing using phased arrays
    • 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
    • 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
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/91—Radar or analogous systems specially adapted for specific applications for traffic control

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Finance (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radio Transmission System (AREA)
  • Traffic Control Systems (AREA)

Abstract

Un sistema de deteccion de transpondedor (50) para detectar la presencia en un área de deteccion (22) de un vehículo (100) en el cual se monta el transpondedor (30). Se localizan dos sistemas directivos de antena (32, 34) en los lados opuestos del área de deteccion (22), y tienen sus visores del ánima (B) dirigidos alárea de deteccion. Para cada sistema directivo, se miden unas señales de suma y diferencia de señales recibidas desde el transpondedor. Se utiliza la señal de canal de suma para establecer si ha ocurrido una transmision, y la señal de canal de diferencia se utiliza para aislar cualquier transpondedor que se encuentre en el área de deteccion.
MX9504994A 1994-11-30 1995-11-30 Sistema y metodo de deteccion de transpondedor. MX9504994A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/346,730 US5648767A (en) 1994-11-30 1994-11-30 Transponder detection system and method

Publications (1)

Publication Number Publication Date
MX9504994A true MX9504994A (es) 1997-03-29

Family

ID=23360796

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9504994A MX9504994A (es) 1994-11-30 1995-11-30 Sistema y metodo de deteccion de transpondedor.

Country Status (12)

Country Link
US (1) US5648767A (es)
EP (1) EP0715185B1 (es)
JP (1) JP2677540B2 (es)
KR (1) KR0153594B1 (es)
AU (1) AU673315B2 (es)
BR (1) BR9505585A (es)
CA (1) CA2164031C (es)
DE (1) DE69528807T2 (es)
ES (1) ES2181754T3 (es)
IL (1) IL116193A (es)
MX (1) MX9504994A (es)
NO (1) NO312430B1 (es)

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Also Published As

Publication number Publication date
BR9505585A (pt) 1997-11-04
DE69528807T2 (de) 2003-09-04
NO954851D0 (no) 1995-11-29
IL116193A (en) 1999-11-30
DE69528807D1 (de) 2002-12-19
AU673315B2 (en) 1996-10-31
AU3913195A (en) 1996-06-06
KR0153594B1 (ko) 1998-12-15
CA2164031C (en) 2000-01-11
EP0715185A2 (en) 1996-06-05
CA2164031A1 (en) 1996-05-31
KR960018615A (ko) 1996-06-17
ES2181754T3 (es) 2003-03-01
US5648767A (en) 1997-07-15
NO312430B1 (no) 2002-05-06
NO954851L (no) 1996-05-31
JP2677540B2 (ja) 1997-11-17
EP0715185B1 (en) 2002-11-13
IL116193A0 (en) 1996-01-31
JPH08228167A (ja) 1996-09-03
EP0715185A3 (en) 1998-04-15

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