SE385249B - Forfarande for att berekna en insignals fourierkoffecienter i realtid samt anordning for genomforande av forfarandet - Google Patents

Forfarande for att berekna en insignals fourierkoffecienter i realtid samt anordning for genomforande av forfarandet

Info

Publication number
SE385249B
SE385249B SE7205514A SE551472A SE385249B SE 385249 B SE385249 B SE 385249B SE 7205514 A SE7205514 A SE 7205514A SE 551472 A SE551472 A SE 551472A SE 385249 B SE385249 B SE 385249B
Authority
SE
Sweden
Prior art keywords
procedure
insignal
coffee
fourier
factors
Prior art date
Application number
SE7205514A
Other languages
English (en)
Inventor
J L Vernet
Original Assignee
Thomson Csf
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 Thomson Csf filed Critical Thomson Csf
Publication of SE385249B publication Critical patent/SE385249B/sv

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/19—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions
    • G06G7/1928—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions for forming correlation integrals; for forming convolution integrals
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G06F17/141—Discrete Fourier transforms
    • G06F17/142—Fast Fourier transforms, e.g. using a Cooley-Tukey type algorithm
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/19—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions
    • G06G7/1921—Arrangements for performing computing operations, e.g. operational amplifiers for forming integrals of products, e.g. Fourier integrals, Laplace integrals, correlation integrals; for analysis or synthesis of functions using orthogonal functions for forming Fourier integrals, harmonic analysis and synthesis

Landscapes

  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • Computational Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Discrete Mathematics (AREA)
  • Algebra (AREA)
  • Databases & Information Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Complex Calculations (AREA)
SE7205514A 1971-04-27 1972-04-26 Forfarande for att berekna en insignals fourierkoffecienter i realtid samt anordning for genomforande av forfarandet SE385249B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR717114988A FR2147770B1 (sv) 1971-04-27 1971-04-27

Publications (1)

Publication Number Publication Date
SE385249B true SE385249B (sv) 1976-06-14

Family

ID=9076009

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7205514A SE385249B (sv) 1971-04-27 1972-04-26 Forfarande for att berekna en insignals fourierkoffecienter i realtid samt anordning for genomforande av forfarandet

Country Status (8)

Country Link
US (1) US3803391A (sv)
BE (1) BE782711A (sv)
DE (1) DE2220784C2 (sv)
FR (1) FR2147770B1 (sv)
GB (1) GB1397103A (sv)
IT (1) IT957656B (sv)
NL (1) NL176500C (sv)
SE (1) SE385249B (sv)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920978A (en) * 1974-02-25 1975-11-18 Sanders Associates Inc Spectrum analyzer
US3926367A (en) * 1974-09-27 1975-12-16 Us Navy Complex filters, convolvers, and multipliers
FR2303326A1 (fr) * 1975-03-05 1976-10-01 Trt Telecom Radio Electr Dispositif de calcul de transformee de fourier discrete
FR2308143A1 (fr) * 1975-04-16 1976-11-12 Ibm France Dispositif generateur de fonction de convolution discrete et filtre numerique incorporant ledit dispositif
US3971927A (en) * 1975-11-03 1976-07-27 The United States Of America As Represented By The Secretary Of The Navy Modular discrete cosine transform system
JPS597990B2 (ja) * 1976-10-06 1984-02-22 日本電気株式会社 Ｎ点離散的フ−リエ変換演算装置
JPS5955523A (ja) * 1982-09-24 1984-03-30 Advantest Corp デジタルスペクトルアナライザ用信号発生器
US4612626A (en) * 1983-12-27 1986-09-16 Motorola Inc. Method of performing real input fast fourier transforms simultaneously on two data streams
US4689762A (en) * 1984-09-10 1987-08-25 Sanders Associates, Inc. Dynamically configurable fast Fourier transform butterfly circuit
US4698769A (en) * 1985-02-04 1987-10-06 American Telephone And Telegraph Company Supervisory audio tone detection in a radio channel
US4764974A (en) * 1986-09-22 1988-08-16 Perceptics Corporation Apparatus and method for processing an image
US5594655A (en) * 1993-08-20 1997-01-14 Nicolet Instrument Corporation Method and apparatus for frequency triggering in digital oscilloscopes and the like
US5987005A (en) * 1997-07-02 1999-11-16 Telefonaktiebolaget Lm Ericsson Method and apparatus for efficient computation of discrete fourier transform (DFT) and inverse discrete fourier transform
US6169723B1 (en) * 1997-07-02 2001-01-02 Telefonaktiebolaget Lm Ericsson Computationally efficient analysis and synthesis of real signals using discrete fourier transforms and inverse discrete fourier transforms
US6023719A (en) * 1997-09-04 2000-02-08 Motorola, Inc. Signal processor and method for fast Fourier transformation
WO2001033411A1 (en) * 1999-10-30 2001-05-10 Stmicroelectronics Asia Pacific Pte. Ltd. Fast modified discrete cosine transform method
FR2815723B1 (fr) * 2000-10-24 2004-04-30 Thomson Csf Procede systeme et sonde pour l'obtention d'images par l'intermediaire d'ondes emises par une antenne apres reflexion de ces ondes au niveau d'un ensemble servant de cible
KR100836050B1 (ko) * 2001-05-23 2008-06-09 엘지전자 주식회사 고속 푸리에 변환 연산 장치

Also Published As

Publication number Publication date
GB1397103A (en) 1975-06-11
NL176500C (nl) 1985-04-16
US3803391A (en) 1974-04-09
BE782711A (fr) 1972-08-16
IT957656B (it) 1973-10-20
DE2220784C2 (de) 1983-03-03
DE2220784A1 (de) 1972-11-09
NL7205569A (sv) 1972-10-31
NL176500B (nl) 1984-11-16
FR2147770B1 (sv) 1974-06-21
FR2147770A1 (sv) 1973-03-11

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