CH625348A5 - - Google Patents

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Publication number
CH625348A5
CH625348A5 CH1241378A CH1241378A CH625348A5 CH 625348 A5 CH625348 A5 CH 625348A5 CH 1241378 A CH1241378 A CH 1241378A CH 1241378 A CH1241378 A CH 1241378A CH 625348 A5 CH625348 A5 CH 625348A5
Authority
CH
Switzerland
Prior art keywords
oem
measurement
auxiliary
point
oems
Prior art date
Application number
CH1241378A
Other languages
English (en)
French (fr)
Inventor
Hobbe Dirk Hoelscher
Original Assignee
South African Inventions
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 ZA00777208A external-priority patent/ZA777208B/xx
Application filed by South African Inventions filed Critical South African Inventions
Publication of CH625348A5 publication Critical patent/CH625348A5/fr

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
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • G01S13/08—Systems for measuring distance only
    • G01S13/32—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S13/36—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
    • G01S13/38—Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal wherein more than one modulation frequency is used
    • 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
    • G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • G01S13/84—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted for distance determination by phase measurement

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)
  • Geophysics And Detection Of Objects (AREA)
CH1241378A 1977-12-05 1978-12-05 CH625348A5 (forum.php)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA00777208A ZA777208B (en) 1977-12-05 1977-12-05 A method of and apparatus for determining distance
ZA784654 1978-08-16

Publications (1)

Publication Number Publication Date
CH625348A5 true CH625348A5 (forum.php) 1981-09-15

Family

ID=27131157

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1241378A CH625348A5 (forum.php) 1977-12-05 1978-12-05

Country Status (5)

Country Link
US (1) US4307397A (forum.php)
JP (1) JPS5496067A (forum.php)
CH (1) CH625348A5 (forum.php)
FR (1) FR2410829A1 (forum.php)
GB (1) GB2011750B (forum.php)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646092A (en) * 1982-06-07 1987-02-24 Plessey South Africa Limited Method of and apparatus for continuous wave electromagnetic distance measurement of positioning
US4577150A (en) * 1982-06-09 1986-03-18 Plessey South Africa Limited Phase measuring method and apparatus
SE456118B (sv) * 1985-12-12 1988-09-05 Stiftelsen Inst Mikrovags Forfarande och anordning for att meta avstand mellan ett forsta och ett andra foremal med signaler av mikrovagsfrekvens
SE456867B (sv) * 1985-12-12 1988-11-07 Stiftelsen Inst Mikrovags Saett att uppmaeta avstaand och/eller hastighet mellan tvaa foeremaal
JP2501290B2 (ja) * 1993-07-19 1996-05-29 株式会社東芝 リ―ド材
US7490817B2 (en) * 2005-01-04 2009-02-17 Bfs Diversified Products Llc Distance indicating system and method
US7364144B2 (en) * 2005-04-27 2008-04-29 Bfs Diversified Products, Llc Sensing and communication system and method
US7420462B2 (en) * 2006-01-23 2008-09-02 Bfs Diversified Products, Llc Air spring distance indicating system and method
US7733239B2 (en) * 2006-05-08 2010-06-08 Bfs Diversified Products, Llc Distance determining system and method
US8823577B2 (en) * 2009-12-23 2014-09-02 Itrack, Llc Distance separation tracking system
US8723720B2 (en) * 2011-05-03 2014-05-13 Harris Corporation Wireless location detection and/or tracking device and associated methods
AU2017362444B2 (en) 2016-11-17 2022-09-08 Lion Group, Inc. Radio frequency identification (RFID) system for determining location
US11519996B2 (en) * 2018-10-31 2022-12-06 Cornell University System and method for ultra-high-resolution ranging using RFID

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2742638A (en) * 1952-01-05 1956-04-17 Vernon M Haywood Radio ranging system
FR1210627A (fr) * 1955-11-15 1960-03-09 South African Council Scientif Procédé et appareillage pour déterminer des positions relatives par le temps de transmission d'ondes
US3229285A (en) * 1960-06-14 1966-01-11 South African Council Scientif Determining relative position by means of the transit time of waves
US3213449A (en) * 1962-12-15 1965-10-19 Anritsu Electronic Works Ltd Distance measuring system
DE1287801B (forum.php) * 1964-04-20
US3315257A (en) * 1964-08-12 1967-04-18 Gerhard P Sauberlich Apparatus and method for geodeticsurveying system
US3300780A (en) * 1965-01-19 1967-01-24 Cubic Corp Electronic surveying system
DE1256902B (de) * 1966-01-14 1967-12-21 Grundig Emv Auf dem Prinzip einer Messung der Laufzeit kohaerenter elektromagnetischer Schwingungen beruhende Vorrichtung zur Messung des Abstandes zweier voneinander entfernter Punkte
US3611368A (en) * 1969-04-24 1971-10-05 Joseph W Crownover Electronic distance finder
CH508885A (de) * 1969-11-24 1971-06-15 Siemens Ag Albis Verfahren und Anordnung zur Entfernungsmessung mittels zweier Sende-Empfangsgeräte
US3701151A (en) * 1971-02-23 1972-10-24 Toyota Motor Co Ltd Method and apparatus for measuring the distance of travel and the speed of a moving object
JPS5916229B2 (ja) * 1972-09-26 1984-04-13 クリスチアン ハイゲン ラボラトリウム ビ− ブイ ２局間のデ−タ転送方法及びその装置

Also Published As

Publication number Publication date
US4307397A (en) 1981-12-22
JPS5496067A (en) 1979-07-30
FR2410829A1 (fr) 1979-06-29
GB2011750B (en) 1982-06-16
GB2011750A (en) 1979-07-11

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PL Patent ceased
PL Patent ceased