GB1361480A - Method and circuits for attenuating a wideband background noise level and interference signals superposed on it - Google Patents

Method and circuits for attenuating a wideband background noise level and interference signals superposed on it

Info

Publication number
GB1361480A
GB1361480A GB5603471A GB5603471A GB1361480A GB 1361480 A GB1361480 A GB 1361480A GB 5603471 A GB5603471 A GB 5603471A GB 5603471 A GB5603471 A GB 5603471A GB 1361480 A GB1361480 A GB 1361480A
Authority
GB
United Kingdom
Prior art keywords
signals
filter
band
signal
gain
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
GB5603471A
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.)
Fried Krupp AG
Original Assignee
Fried Krupp AG
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 Fried Krupp AG filed Critical Fried Krupp AG
Publication of GB1361480A publication Critical patent/GB1361480A/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
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/522—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves
    • G01S13/524—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi
    • G01S13/53—Discriminating between fixed and moving objects or between objects moving at different speeds using transmissions of interrupted pulse modulated waves based upon the phase or frequency shift resulting from movement of objects, with reference to the transmitted signals, e.g. coherent MTi performing filtering on a single spectral line and associated with one or more range gates with a phase detector or a frequency mixer to extract the Doppler information, e.g. pulse Doppler radar
    • 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
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/35—Details of non-pulse systems
    • G01S7/352—Receivers
    • G01S7/354—Extracting wanted echo-signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Noise Elimination (AREA)
  • Radar Systems Or Details Thereof (AREA)
GB5603471A 1970-12-03 1971-12-02 Method and circuits for attenuating a wideband background noise level and interference signals superposed on it Expired GB1361480A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702059507 DE2059507A1 (de) 1970-12-03 1970-12-03 Schaltanordnung zum Bedaempfen eines breitbandigen Grundstoerpegels und ihm ueberlagerter Stoersignale

Publications (1)

Publication Number Publication Date
GB1361480A true GB1361480A (en) 1974-07-24

Family

ID=5789879

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5603471A Expired GB1361480A (en) 1970-12-03 1971-12-02 Method and circuits for attenuating a wideband background noise level and interference signals superposed on it

Country Status (6)

Country Link
US (1) US3737799A (enExample)
DE (1) DE2059507A1 (enExample)
FR (1) FR2117395A5 (enExample)
GB (1) GB1361480A (enExample)
NL (1) NL7115967A (enExample)
NO (1) NO132332C (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3211719A1 (de) * 1982-03-04 1983-09-15 Yokogawa Electric Works, Ltd., Musashino, Tokyo Ultraschallecho-untersuchungsgeraet

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4119966A (en) * 1977-07-14 1978-10-10 Motorola Inc. Clutter discriminating apparatus for use with pulsed doppler radar systems and the like
US4186349A (en) * 1977-12-27 1980-01-29 E-Systems, Inc. Adaptive narrow band noise estimator/suppressor radio receiver
JPS5821466B2 (ja) * 1979-02-13 1983-04-30 日本電信電話株式会社 デイジタル信号受信方式
US4549312A (en) * 1980-02-29 1985-10-22 Digital Marine Electronics Corporation Radio receiver with automatic interference and distortion compensation
US4561019A (en) * 1983-05-16 1985-12-24 Riverside Research Institute Frequency diversity for image enhancement
DE3406343A1 (de) * 1984-02-22 1985-08-29 Messerschmitt-Bölkow-Blohm GmbH, 2800 Bremen Verfahren zur ortung von signalquellen mit stoersignalunterdrueckung
DE3420545C2 (de) * 1984-06-01 1993-11-11 Atlas Elektronik Gmbh Verfahren zum Peilen eines Zielverbandes und Vorrichtung zum Ausüben des Verfahrens
DE3520398A1 (de) * 1985-06-07 1986-12-11 Fried. Krupp Gmbh, 4300 Essen Verfahren und vorrichtung zum ausblenden von stoersignalen
DE3538649A1 (de) * 1985-10-31 1987-05-07 Krupp Gmbh Peilempfaenger
DE4017849C3 (de) * 1990-06-02 1995-10-26 Alliedsignal Elac Nautik Gmbh Schaltungsanordnung zur Störunterdrückung im Empfangssignal von Sonaranlagen
US5473461A (en) * 1994-08-26 1995-12-05 Interactive Light, Inc. Wide dynamic range optical receiver
US5537680A (en) * 1994-12-27 1996-07-16 Insulated Wire Incorporated Cellular receiver range extender
JPH09229974A (ja) * 1996-02-20 1997-09-05 Advantest Corp 対数変換回路
US6711394B2 (en) 1998-08-06 2004-03-23 Isco International, Inc. RF receiver having cascaded filters and an intermediate amplifier stage
US6314309B1 (en) 1998-09-22 2001-11-06 Illinois Superconductor Corp. Dual operation mode all temperature filter using superconducting resonators
JP3665711B2 (ja) * 1999-02-25 2005-06-29 富士通株式会社 高周波増幅器および増幅素子
US6896658B2 (en) * 2001-10-20 2005-05-24 Zonare Medical Systems, Inc. Simultaneous multi-mode and multi-band ultrasonic imaging
US6685645B1 (en) * 2001-10-20 2004-02-03 Zonare Medical Systems, Inc. Broad-beam imaging
US9407482B2 (en) * 2013-11-11 2016-08-02 Nokia Technologies Oy Tunable RF N-path filter
DE102014207086A1 (de) * 2014-04-14 2015-10-15 Robert Bosch Gmbh Vorrichtung und Verfahren zur schallbasierten Umfelddetektion
TWI561016B (en) * 2015-01-12 2016-12-01 Wistron Neweb Corp Signal transceiver circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL183566B (nl) * 1952-12-13 Emi Ltd Radiografische inrichting.
US3665321A (en) * 1969-07-02 1972-05-23 Sierra Research Corp System for passing on-frequency signals and for gating-out off-frequency signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3211719A1 (de) * 1982-03-04 1983-09-15 Yokogawa Electric Works, Ltd., Musashino, Tokyo Ultraschallecho-untersuchungsgeraet

Also Published As

Publication number Publication date
NO132332B (enExample) 1975-07-14
NL7115967A (enExample) 1972-06-06
FR2117395A5 (enExample) 1972-07-21
DE2059507A1 (de) 1972-06-08
US3737799A (en) 1973-06-05
NO132332C (enExample) 1975-10-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees