[go: up one dir, main page]

FR57704E - Methods for determining the position of obstacles by reflected electromagnetic waves - Google Patents

Methods for determining the position of obstacles by reflected electromagnetic waves

Info

Publication number
FR57704E
FR57704E FR57704DA FR57704E FR 57704 E FR57704 E FR 57704E FR 57704D A FR57704D A FR 57704DA FR 57704 E FR57704 E FR 57704E
Authority
FR
France
Prior art keywords
obstacles
determining
methods
electromagnetic waves
reflected electromagnetic
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)
Inventor
Prafulla Kumar Chatterjea
Leslie Wilfred Houghton
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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
Priority claimed from GB375842A external-priority patent/GB586833A/en
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR57704E publication Critical patent/FR57704E/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
    • 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
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/24—Systems for measuring distance only using transmission of interrupted, pulse modulated waves using frequency agility of carrier wave
    • 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
    • G01S13/10—Systems for measuring distance only using transmission of interrupted, pulse modulated waves
    • G01S13/12—Systems for measuring distance only using transmission of interrupted, pulse modulated waves wherein the pulse-recurrence frequency is varied to provide a desired time relationship between the transmission of a pulse and the receipt of the echo of a preceding pulse

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR57704D 1942-03-20 1947-10-04 Methods for determining the position of obstacles by reflected electromagnetic waves Expired FR57704E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB375842A GB586833A (en) 1942-03-20 1942-03-20 Improvements in or relating to arrangements for locating objects by radio waves
FR57505T 1947-08-06

Publications (1)

Publication Number Publication Date
FR57704E true FR57704E (en) 1953-05-04

Family

ID=26182862

Family Applications (1)

Application Number Title Priority Date Filing Date
FR57704D Expired FR57704E (en) 1942-03-20 1947-10-04 Methods for determining the position of obstacles by reflected electromagnetic waves

Country Status (1)

Country Link
FR (1) FR57704E (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004007458A1 (en) 2002-07-17 2004-01-22 Amgen Inc. Substituted 2-alkylamine nicotinic amide derivatives and use there of
WO2019195349A1 (en) 2018-04-02 2019-10-10 Aveta Biomics, Inc. Polypharmaceutical drug compositions and related methods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004007458A1 (en) 2002-07-17 2004-01-22 Amgen Inc. Substituted 2-alkylamine nicotinic amide derivatives and use there of
WO2019195349A1 (en) 2018-04-02 2019-10-10 Aveta Biomics, Inc. Polypharmaceutical drug compositions and related methods

Similar Documents

Publication Publication Date Title
FR938693A (en) System for the transmission of guided electromagnetic waves
FR982997A (en) Centimeter-wave guided propagation
FR945611A (en) Device for the emission of electromagnetic waves
FR54938E (en) Electromagnetic wave attenuators
FR950269A (en) Guides for electro-magnetic waves
FR57704E (en) Methods for determining the position of obstacles by reflected electromagnetic waves
FR57705E (en) Methods for determining the position of obstacles by reflected electromagnetic waves
ES176088A1 (en) IMPROVEMENTS IN OR RELATIVE TO PROVISIONS FOR DETECTION OF OBSTACLES AND MEASUREMENT OF DISTANCES BY ELECTROMAGNETIC WAVES
FR942289A (en) Wave-signal translation system
CH251913A (en) Device for locating the direction of propagation of an electromagnetic wave.
FR992901A (en) Assault train
FR950268A (en) Reduced intensity of electromagnetic waves reflected from reflective objects
CH271260A (en) Method of receiving electromagnetic waves.
CH271410A (en) Installation for determining the position of an object by reflected electro-magnetic waves.
FR916461A (en) Signal transmission by means of electromagnetic waves
FR891432A (en) Electromagnetic wave reflector
FR927268A (en) Electromagnetic wave attenuators
FR898030A (en) Very short wave amplifier
FR891820A (en) Gasket for fixed joints
CH252033A (en) Electromagnetic horn for guided waves.
FR891862A (en) advanced stage for short waves
FR982406A (en) Guided wave transformer
FR945069A (en) Improvements to waveguides for the transmission of guided electromagnetic waves
FR899540A (en) Ultra-shortwave push-pull amplifier
FR976100A (en) Improvements to sounding or ultrasonic echo sounding devices