GB2010626A - Extracting signals from noise - Google Patents

Extracting signals from noise

Info

Publication number
GB2010626A
GB2010626A GB7836295A GB7836295A GB2010626A GB 2010626 A GB2010626 A GB 2010626A GB 7836295 A GB7836295 A GB 7836295A GB 7836295 A GB7836295 A GB 7836295A GB 2010626 A GB2010626 A GB 2010626A
Authority
GB
United Kingdom
Prior art keywords
alpha
processing
store
signal
elementary
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.)
Granted
Application number
GB7836295A
Other versions
GB2010626B (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.)
Office National dEtudes et de Recherches Aerospatiales ONERA
Original Assignee
Office National dEtudes et de Recherches Aerospatiales ONERA
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 Office National dEtudes et de Recherches Aerospatiales ONERA filed Critical Office National dEtudes et de Recherches Aerospatiales ONERA
Publication of GB2010626A publication Critical patent/GB2010626A/en
Application granted granted Critical
Publication of GB2010626B publication Critical patent/GB2010626B/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Image Processing (AREA)
  • Machine Translation (AREA)
  • Complex Calculations (AREA)
  • Studio Circuits (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

A signal to be synthetically extracted in real time from noise is sampled together with the noise into component elementary signals E???. A plurality of possible replicas of said signal R1...Ri...Rp are stored in a replica store, and allowed to selectively succeed one another in accordance with syntactic rules of succession. Each component elementary signal E alpha is compared in real time with the replicas R1....Ri....Rp and similarity indices I<1> alpha ...I<i> alpha ....I<p> alpha derived and arranged in decreasing order. The values of the replica numbers sj with the associated similarity indices dj=I<s> alpha <j> are written in the lines of a first processing store; the sequence of the higher similarity indices obtained in the successive processing steps for the previous component elementary signals, and the sequence of the replica numbers associated therewith are written in a line of a second processing store; at each processing step for a new component elementary signal, the higher similarity index relating to said new elementary signal written in said first processing store is added to the sequence of higher similarity indices relating to the already processed previous elementary signals and stored in said second processing store and the replica number relating to said new elementary signal written in said first processing store is added to the sequence of replica numbers relating to the already processed previous elementary signals and stored in said second processing store.
GB7836295A 1977-09-09 1978-09-11 Extracting signals from noise Expired GB2010626B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7727362A FR2402971A1 (en) 1977-09-09 1977-09-09 SYNTACTIC EXTRACTOR OF EVOLVING SIGNALS AND EXTRACTION PROCESS

Publications (2)

Publication Number Publication Date
GB2010626A true GB2010626A (en) 1979-06-27
GB2010626B GB2010626B (en) 1982-03-03

Family

ID=9195227

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7836295A Expired GB2010626B (en) 1977-09-09 1978-09-11 Extracting signals from noise

Country Status (3)

Country Link
DE (1) DE2838185C2 (en)
FR (1) FR2402971A1 (en)
GB (1) GB2010626B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003556C2 (en) * 1980-02-01 1984-12-06 Dornier Gmbh, 7990 Friedrichshafen Method and device for determining a useful signal from a band-limited signal superimposed with interference signals
FR2494870B1 (en) * 1980-11-26 1986-11-21 Onera (Off Nat Aerospatiale) METHOD AND SYSTEM FOR TRACKING MOBILE TARGETS
DE3214938A1 (en) * 1982-04-22 1983-10-27 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for separating user data signals and interference signals
DE3411485A1 (en) 1984-03-28 1985-10-03 Siemens AG, 1000 Berlin und 8000 München METHOD FOR DETECTING THE LIMITS OF SIGNALS THAT APPEAR IN MIXTURE BEFORE A BACKGROUND SIGNAL MIXTURE
FR2590359B1 (en) * 1985-11-18 1988-02-12 Aerospatiale SYSTEM FOR THE AUTOMATIC GUIDANCE OF A MISSILE AND MISSILE PROVIDED WITH SUCH A SYSTEM
DE3744691C2 (en) * 1986-08-29 2002-03-07 Alenia Marconi Systems Ltd Method and device for evaluating radar target pulses
FR2626678B1 (en) * 1988-01-29 1990-05-18 Lmt Radio Professionelle RADAR, ESPECIALLY FOR CORRECTION OF ARTILLERY
DE3837760A1 (en) * 1988-11-07 1992-11-12 Esg Elektronik System Gmbh Determining origins of radar pulses from several sources received in combination - involves comparison with check sequences using analysis tree with multiple planes
DE19961090B4 (en) * 1999-12-17 2005-02-17 Rohde & Schwarz Gmbh & Co. Kg Method for increasing the signal-to-noise ratio of an unknown useful signal in the case of a radio-frequency signal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3504164A (en) * 1964-04-10 1970-03-31 Sperry Rand Corp Data processing system for classifying unknown waveform

Also Published As

Publication number Publication date
DE2838185A1 (en) 1979-03-15
FR2402971A1 (en) 1979-04-06
DE2838185C2 (en) 1983-08-11
FR2402971B1 (en) 1982-02-05
GB2010626B (en) 1982-03-03

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920911