GB818643A - Improvements in or relating to noise reduction in continuous wave doppler radar systems - Google Patents

Improvements in or relating to noise reduction in continuous wave doppler radar systems

Info

Publication number
GB818643A
GB818643A GB1000/57A GB100057A GB818643A GB 818643 A GB818643 A GB 818643A GB 1000/57 A GB1000/57 A GB 1000/57A GB 100057 A GB100057 A GB 100057A GB 818643 A GB818643 A GB 818643A
Authority
GB
United Kingdom
Prior art keywords
frequency
mixer
signal
modulation
output
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
GB1000/57A
Other languages
English (en)
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB818643A publication Critical patent/GB818643A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D9/00—Demodulation or transference of modulation of modulated electromagnetic waves
    • H03D9/06—Transference of modulation using distributed inductance and capacitance
    • 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
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/536—Discriminating between fixed and moving objects or between objects moving at different speeds using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
GB1000/57A 1956-04-14 1957-01-10 Improvements in or relating to noise reduction in continuous wave doppler radar systems Expired GB818643A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA818643X 1956-04-14

Publications (1)

Publication Number Publication Date
GB818643A true GB818643A (en) 1959-08-19

Family

ID=4172574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1000/57A Expired GB818643A (en) 1956-04-14 1957-01-10 Improvements in or relating to noise reduction in continuous wave doppler radar systems

Country Status (5)

Country Link
BE (1) BE556537A (enrdf_load_stackoverflow)
DE (1) DE1069222B (enrdf_load_stackoverflow)
FR (1) FR1174138A (enrdf_load_stackoverflow)
GB (1) GB818643A (enrdf_load_stackoverflow)
NL (2) NL216196A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1257900B (de) * 1959-10-07 1968-01-04 Bendix Corp Doppler-Navigationssystem fuer den Bordbetrieb in einem Luftfahrzeug

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1285956A (fr) * 1961-01-16 1962-03-02 Sfim Dispositif radio-électrique de repérage, d'alerte et de télémétrie

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB680704A (en) * 1948-07-07 1952-10-08 Marconi Wireless Telegraph Co Improvements in or relating to radar systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1257900B (de) * 1959-10-07 1968-01-04 Bendix Corp Doppler-Navigationssystem fuer den Bordbetrieb in einem Luftfahrzeug

Also Published As

Publication number Publication date
BE556537A (enrdf_load_stackoverflow)
NL216196A (enrdf_load_stackoverflow)
NL113974C (enrdf_load_stackoverflow)
FR1174138A (fr) 1959-03-06
DE1069222B (enrdf_load_stackoverflow) 1959-11-19

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