FR2283447B1 - - Google Patents

Info

Publication number
FR2283447B1
FR2283447B1 FR7526240A FR7526240A FR2283447B1 FR 2283447 B1 FR2283447 B1 FR 2283447B1 FR 7526240 A FR7526240 A FR 7526240A FR 7526240 A FR7526240 A FR 7526240A FR 2283447 B1 FR2283447 B1 FR 2283447B1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7526240A
Other languages
French (fr)
Other versions
FR2283447A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plessey Handel und Investments AG
Original Assignee
Plessey Handel und Investments AG
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
Priority claimed from GB3750474A external-priority patent/GB1523113A/en
Application filed by Plessey Handel und Investments AG filed Critical Plessey Handel und Investments AG
Publication of FR2283447A1 publication Critical patent/FR2283447A1/fr
Application granted granted Critical
Publication of FR2283447B1 publication Critical patent/FR2283447B1/fr
Granted legal-status Critical Current

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
    • G01S13/762—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with special measures concerning the radiation pattern, e.g. S.L.S.
    • 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
    • G01S13/46—Indirect determination of position data
    • 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
    • G01S13/46—Indirect determination of position data
    • G01S2013/466—Indirect determination of position data by Trilateration, i.e. two antennas or two sensors determine separately the distance to a target, whereby with the knowledge of the baseline length, i.e. the distance between the antennas or sensors, the position data of the target is determined

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
FR7526240A 1974-08-28 1975-08-26 Procede et appareil d'interrogation de transpondeurs de vehicules Granted FR2283447A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3750474A GB1523113A (en) 1974-08-28 1974-08-28 Radar systems
GB2548475 1975-06-14

Publications (2)

Publication Number Publication Date
FR2283447A1 FR2283447A1 (fr) 1976-03-26
FR2283447B1 true FR2283447B1 (enExample) 1980-10-24

Family

ID=26257705

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7526240A Granted FR2283447A1 (fr) 1974-08-28 1975-08-26 Procede et appareil d'interrogation de transpondeurs de vehicules

Country Status (3)

Country Link
US (1) US4109248A (enExample)
DE (1) DE2538382A1 (enExample)
FR (1) FR2283447A1 (enExample)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2911313C3 (de) * 1979-03-22 1981-11-05 Siemens AG, 1000 Berlin und 8000 München Flughafen-Überwachungssystem
JPH0753686B2 (ja) * 1986-10-27 1995-06-07 三菱レイヨン株式会社 メタクリル酸の製造法
DE102008010882A1 (de) * 2008-02-25 2009-09-03 IAD Gesellschaft für Informatik, Automatisierung und Datenverarbeitung mbH Vorrichtung und Verfahren zur Richtungsschätzung und/oder Decodierung von Sekundärradarsignalen
FR3075398B1 (fr) * 2017-12-19 2020-01-10 Thales Procede de mesure de diagrammes d antenne d un radar secondaire et radar secondaire mettant en oeuvre un tel procede
US12276721B2 (en) 2018-02-14 2025-04-15 Seamatica Aerospace Ltd. Method and apparatus for determining a position of an airborne vehicle using secondary surveillance radars as beacons
US11333750B2 (en) 2018-02-14 2022-05-17 Seamatica Aerospace Ltd. Method and system for tracking non-cooperative objects using secondary surveillance radar
US12181565B2 (en) 2018-02-14 2024-12-31 Seamatica Aerospace Ltd. Aviation detect and avoid method and system
US10839179B2 (en) 2018-10-17 2020-11-17 Vubiq Networks, Inc. Multimode millimeter wave RFID devices and methods of use thereof
CA3060761A1 (en) * 2018-10-30 2020-04-30 Seamatica Aerospace Ltd. Improved mode a/c/s transponder positioning system and method for using the same
CA3097292A1 (en) 2019-10-25 2021-04-25 Seamatica Aerospace Ltd. Method and apparatus for ensuring aviation safety in the presence of ownship aircrafts

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1401273A (en) * 1971-06-30 1975-07-16 Cossor Ltd A C Secondary radar receiver system
FR2152419B1 (enExample) * 1971-09-14 1974-05-31 Materiel Telephonique
US3754251A (en) * 1972-01-17 1973-08-21 Ltv Electrosystems Inc Anti-synchronous reply circuit

Also Published As

Publication number Publication date
FR2283447A1 (fr) 1976-03-26
US4109248A (en) 1978-08-22
DE2538382A1 (de) 1976-03-11

Similar Documents

Publication Publication Date Title
FR2258710B1 (enExample)
DK205075A (enExample)
FR2283447B1 (enExample)
DK534475A (enExample)
DK138441C (enExample)
FR2258154B1 (enExample)
CS169327B1 (enExample)
AU7891375A (enExample)
AR199073A1 (enExample)
FI751708A7 (enExample)
BG20455A1 (enExample)
BG20224A1 (enExample)
DD115470A1 (enExample)
CH613752A5 (enExample)
CH611883A5 (enExample)
CH605548A5 (enExample)
CH597897A5 (enExample)
CH596778A5 (enExample)
CH590489A5 (enExample)
CH581642A5 (enExample)
BG20475A1 (enExample)
BG20473A1 (enExample)
BG20471A1 (enExample)
BG20462A1 (enExample)
DD118616A5 (enExample)

Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse