FR2178123B1 - - Google Patents

Info

Publication number
FR2178123B1
FR2178123B1 FR7311171A FR7311171A FR2178123B1 FR 2178123 B1 FR2178123 B1 FR 2178123B1 FR 7311171 A FR7311171 A FR 7311171A FR 7311171 A FR7311171 A FR 7311171A FR 2178123 B1 FR2178123 B1 FR 2178123B1
Authority
FR
France
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
FR7311171A
Other versions
FR2178123A1 (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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of FR2178123A1 publication Critical patent/FR2178123A1/fr
Application granted granted Critical
Publication of FR2178123B1 publication Critical patent/FR2178123B1/fr
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
    • 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
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/292—Extracting wanted echo-signals
    • G01S7/2923—Extracting wanted echo-signals based on data belonging to a number of consecutive radar periods
    • 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
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
    • G01S5/30—Determining absolute distances from a plurality of spaced points of known location
    • 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
    • G01S7/28—Details of pulse systems
    • G01S7/285—Receivers
    • G01S7/292—Extracting wanted echo-signals
    • G01S7/2921—Extracting wanted echo-signals based on data belonging to one radar period
    • 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
    • Y10S367/901—Noise or unwanted signal reduction in nonseismic receiving system

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Radar Systems Or Details Thereof (AREA)
FR7311171A 1972-03-29 1973-03-28 Expired FR2178123B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47031494A JPS4898866A (fr) 1972-03-29 1972-03-29

Publications (2)

Publication Number Publication Date
FR2178123A1 FR2178123A1 (fr) 1973-11-09
FR2178123B1 true FR2178123B1 (fr) 1977-09-02

Family

ID=12332791

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7311171A Expired FR2178123B1 (fr) 1972-03-29 1973-03-28

Country Status (4)

Country Link
US (1) US3893064A (fr)
JP (1) JPS4898866A (fr)
DE (1) DE2315543A1 (fr)
FR (1) FR2178123B1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50110357A (fr) * 1974-02-08 1975-08-30
JPS50128548A (fr) * 1974-03-28 1975-10-09
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
US5241517A (en) * 1992-10-19 1993-08-31 Xerox Corporation Indexing apparatus using ultrasonic feedback
JPH09229974A (ja) * 1996-02-20 1997-09-05 Advantest Corp 対数変換回路
US7146176B2 (en) 2000-06-13 2006-12-05 Shared Spectrum Company System and method for reuse of communications spectrum for fixed and mobile applications with efficient method to mitigate interference
US6805132B2 (en) * 2002-08-06 2004-10-19 Scimed Life Systems, Inc. Performing ultrasound ranging in the presence of ultrasound interference
US7409010B2 (en) 2003-06-10 2008-08-05 Shared Spectrum Company Method and system for transmitting signals with reduced spurious emissions
US8027249B2 (en) * 2006-10-18 2011-09-27 Shared Spectrum Company Methods for using a detector to monitor and detect channel occupancy
US8184653B2 (en) 2007-08-15 2012-05-22 Shared Spectrum Company Systems and methods for a cognitive radio having adaptable characteristics
US9538388B2 (en) 2006-05-12 2017-01-03 Shared Spectrum Company Method and system for dynamic spectrum access
US7564816B2 (en) * 2006-05-12 2009-07-21 Shared Spectrum Company Method and system for determining spectrum availability within a network
US8155649B2 (en) 2006-05-12 2012-04-10 Shared Spectrum Company Method and system for classifying communication signals in a dynamic spectrum access system
US8997170B2 (en) 2006-12-29 2015-03-31 Shared Spectrum Company Method and device for policy-based control of radio
US8326313B2 (en) * 2006-05-12 2012-12-04 Shared Spectrum Company Method and system for dynamic spectrum access using detection periods
US8055204B2 (en) 2007-08-15 2011-11-08 Shared Spectrum Company Methods for detecting and classifying signals transmitted over a radio frequency spectrum
EP2319260A2 (fr) 2008-08-19 2011-05-11 Shared Spectrum Company Procédé et système d'accès à un spectre dynamique à l'aide de détecteurs de spécialité et d'une mise en réseau améliorée
US8688045B2 (en) * 2008-11-19 2014-04-01 Qualcomm Incorporated FM transmitter and non-FM receiver integrated on single chip

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA885095A (en) * 1969-05-27 1971-11-02 H. Haase Wallace Remote control methods and systems
JPS5544349B1 (fr) * 1970-10-13 1980-11-12
US3742440A (en) * 1971-11-01 1973-06-26 Raytheon Co System for activating a remote underwater device

Also Published As

Publication number Publication date
JPS4898866A (fr) 1973-12-14
US3893064A (en) 1975-07-01
DE2315543A1 (de) 1973-10-11
FR2178123A1 (fr) 1973-11-09

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