FR806986A - Improvements in methods for detecting the presence of an object in an electromagnetic radiation field - Google Patents

Improvements in methods for detecting the presence of an object in an electromagnetic radiation field

Info

Publication number
FR806986A
FR806986A FR806986DA FR806986A FR 806986 A FR806986 A FR 806986A FR 806986D A FR806986D A FR 806986DA FR 806986 A FR806986 A FR 806986A
Authority
FR
France
Prior art keywords
detecting
methods
electromagnetic radiation
radiation field
field
Prior art date
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
Other languages
French (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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Application granted granted Critical
Publication of FR806986A publication Critical patent/FR806986A/en
Expired 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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)
FR806986D 1935-06-08 1936-06-02 Improvements in methods for detecting the presence of an object in an electromagnetic radiation field Expired FR806986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2085798X 1935-06-08

Publications (1)

Publication Number Publication Date
FR806986A true FR806986A (en) 1936-12-30

Family

ID=7984201

Family Applications (1)

Application Number Title Priority Date Filing Date
FR806986D Expired FR806986A (en) 1935-06-08 1936-06-02 Improvements in methods for detecting the presence of an object in an electromagnetic radiation field

Country Status (2)

Country Link
US (1) US2085798A (en)
FR (1) FR806986A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415094A (en) * 1938-01-17 1947-02-04 Board Radio measurement of distances and velocities
US2444388A (en) * 1938-03-18 1948-06-29 Hartford Nat Bank & Trust Co Device for indicating direction and distance
US2506617A (en) * 1938-06-23 1950-05-09 Us Sec War Method of and apparatus for locating and tracking a distant body
US2435615A (en) * 1941-09-30 1948-02-10 Board Object detecting and locating system
US2463297A (en) * 1944-12-21 1949-03-01 Gulf Research Development Co Apparatus for testing insulating materials
US2537737A (en) * 1944-12-23 1951-01-09 Atlantic Refining Co Detection of leaks in pipe lines
US2971190A (en) * 1945-02-24 1961-02-07 Itt Position finding system
US20080136632A1 (en) * 2002-08-23 2008-06-12 Moreno Pieralli Microwave detection system and method for detecting intrusion to an off-limits zone
US6933858B2 (en) * 2002-08-23 2005-08-23 General Electric Company System and method for detecting obstacles within the area of a railroad grade crossing using a phase modulated microwave signal
US7295111B2 (en) * 2002-08-23 2007-11-13 General Electric Company Microwave detection system and method for detecting intrusion to an off-limits zone
JP3977303B2 (en) * 2003-08-21 2007-09-19 シャープ株式会社 Position detection system, transmitter and receiver in position detection system
US7439876B2 (en) 2005-08-02 2008-10-21 General Electric Company Microwave detection system and method

Also Published As

Publication number Publication date
US2085798A (en) 1937-07-06

Similar Documents

Publication Publication Date Title
FR810583A (en) Improvements in methods and devices for fixing objects to walls and similar surfaces
FR806986A (en) Improvements in methods for detecting the presence of an object in an electromagnetic radiation field
FR836445A (en) Antistatic photographic films
FR802364A (en) Unsymmetrical conductivity electrode system
CH277710A (en) Device for determining the distance of an object.
FR802741A (en) Slider closure
FR812604A (en) Unsymmetrical conductivity electrode system
CH241028A (en) Eddy current dynamometer.
FR789882A (en) Device used for osteosynthesis
NL54191C (en) Goniometer with ferrous material for measuring purposes
FR790800A (en) Anchor nail
FR813780A (en) Unsymmetrical conductivity electrode system
FR811035A (en) Fencing button checking device
FR878193A (en) Method for determining the imaging voltage for x-rays
FR871633A (en) Ultra-shortwave directed radiation system
FR811164A (en) Device for measuring the quantities and intensities of electromagnetic radiation
CH242193A (en) Eddy current dynamometer.
CH241029A (en) Eddy current dynamometer.
FR878315A (en) Device for determining the plane of incidence of an electromagnetic field
FR811156A (en) Alloy with artificial radioactivity and processes for its manufacture
FR798381A (en) Anti-rust and underwater paint based on powdered mercury-metal
FR836344A (en) Mercury cathode rectifier
FR798214A (en) Improvements to permanent waving processes
FR808004A (en) Electron beam discharge device
FR740288A (en) Galena detector