BE672877A - - Google Patents

Info

Publication number
BE672877A
BE672877A BE672877DA BE672877A BE 672877 A BE672877 A BE 672877A BE 672877D A BE672877D A BE 672877DA BE 672877 A BE672877 A BE 672877A
Authority
BE
Belgium
Application number
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 filed Critical
Publication of BE672877A publication Critical patent/BE672877A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/01—Reducing phase shift
    • 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
    • G01S13/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G01S13/585—Velocity or trajectory determination systems; Sense-of-movement determination systems processing the video signal in order to evaluate or display the velocity value
    • G01S13/586—Velocity or trajectory determination systems; Sense-of-movement determination systems processing the video signal in order to evaluate or display the velocity value using, or combined with, frequency tracking means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S367/00—Communications, electrical: acoustic wave systems and devices
    • Y10S367/904—Doppler compensation systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transceivers (AREA)
BE672877D 1957-04-02 1965-11-26 BE672877A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10707/57A GB830021A (en) 1957-04-02 1957-04-02 Improvements in or relating to radio communication systems

Publications (1)

Publication Number Publication Date
BE672877A true BE672877A (pt) 1966-05-26

Family

ID=9972800

Family Applications (2)

Application Number Title Priority Date Filing Date
BE566349D BE566349A (pt) 1957-04-02 1958-04-02
BE672877D BE672877A (pt) 1957-04-02 1965-11-26

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BE566349D BE566349A (pt) 1957-04-02 1958-04-02

Country Status (5)

Country Link
US (1) US2974222A (pt)
BE (2) BE566349A (pt)
CH (1) CH366573A (pt)
FR (1) FR1194035A (pt)
GB (1) GB830021A (pt)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB990138A (en) * 1960-05-13 1965-04-28 Henry Parks Hutchinson Improvements in or relating to communications systems
US3262116A (en) * 1964-01-16 1966-07-19 Satellite And Space Comm Syste Satellite and space communications systems
US3263173A (en) * 1961-07-31 1966-07-26 Gen Electric Doppler effect compensation
GB1028021A (en) * 1962-01-08 1966-05-04 Post Office Improvements in or relating to satellite radio communication systems and apparatus therefor
US3202960A (en) * 1962-03-28 1965-08-24 Motorola Inc Ultrasonic doppler speed measurement device
US3182132A (en) * 1962-07-17 1965-05-04 Bell Telephone Labor Inc Doppler frequency shift correction of information band frequencies in a suppressed carrier system using a pair of pilot signals
US3182131A (en) * 1962-07-17 1965-05-04 Bell Telephone Labor Inc Doppler frequency shift correction of information band frequencies in a transmitted carrier system using a single pilot signal
US3210666A (en) * 1962-12-26 1965-10-05 Automatic Elect Lab Carrier system signalling and synchronization
US3317909A (en) * 1964-04-07 1967-05-02 Richard M Waetjen Compensation for doppler shift in aerospace communications
US3325736A (en) * 1964-05-19 1967-06-13 Richard M Waetjen Doppler cancelation system
US3970937A (en) * 1974-12-19 1976-07-20 Motorola, Inc. Modem for a suppressed carrier communications system
DE3887204T2 (de) * 1987-05-27 1994-07-07 Fujitsu Ltd Digitales Zweirichtungsfunkübertragungssystem unter Verwendung einer einzigen Frequenz.
JPH0422225A (ja) * 1990-05-17 1992-01-27 Sony Corp 通信方式
US5669067A (en) * 1994-06-29 1997-09-16 Harris Corporation Remotely controllable variable intermediate frequency transceiver
JPH08204763A (ja) * 1994-11-21 1996-08-09 Sony Corp 送信機及び送受信機
KR100186586B1 (ko) * 1996-04-25 1999-05-15 김광호 이동 통신시스템의 주파수 발생장치 및 방법

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2528632A (en) * 1947-03-13 1950-11-07 Smith Meeker Engineering Co Frequency control system
US2653315A (en) * 1951-02-20 1953-09-22 Rca Corp Frequency control system for microwave relay terminal stations
US2891245A (en) * 1953-11-02 1959-06-16 John H Coogan Signal tracking device

Also Published As

Publication number Publication date
FR1194035A (pt) 1959-11-06
CH366573A (de) 1963-01-15
GB830021A (en) 1960-03-09
BE566349A (pt) 1960-07-29
US2974222A (en) 1961-03-07

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