FR2503897A1 - Procede et dispositif de calcul du logarithme du module d'un signal video frequence a partir de ses composantes en quadrature, application a un dispositif de traitement d'informations radar ou de telecommunications - Google Patents

Procede et dispositif de calcul du logarithme du module d'un signal video frequence a partir de ses composantes en quadrature, application a un dispositif de traitement d'informations radar ou de telecommunications Download PDF

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Publication number
FR2503897A1
FR2503897A1 FR8107461A FR8107461A FR2503897A1 FR 2503897 A1 FR2503897 A1 FR 2503897A1 FR 8107461 A FR8107461 A FR 8107461A FR 8107461 A FR8107461 A FR 8107461A FR 2503897 A1 FR2503897 A1 FR 2503897A1
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FR
France
Prior art keywords
log
circuit
logarithm
transcoding
components
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
FR8107461A
Other languages
English (en)
French (fr)
Other versions
FR2503897B1 (en:Method
Inventor
Guy Lepere
Gerard Rotat
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 SA filed Critical Thomson CSF SA
Priority to FR8107461A priority Critical patent/FR2503897A1/fr
Publication of FR2503897A1 publication Critical patent/FR2503897A1/fr
Application granted granted Critical
Publication of FR2503897B1 publication Critical patent/FR2503897B1/fr
Granted legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/544—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices for evaluating functions by calculation
    • G06F7/552—Powers or roots, e.g. Pythagorean sums
    • 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
    • G01S7/288—Coherent receivers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Computing Systems (AREA)
  • Mathematical Optimization (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)
FR8107461A 1981-04-14 1981-04-14 Procede et dispositif de calcul du logarithme du module d'un signal video frequence a partir de ses composantes en quadrature, application a un dispositif de traitement d'informations radar ou de telecommunications Granted FR2503897A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8107461A FR2503897A1 (fr) 1981-04-14 1981-04-14 Procede et dispositif de calcul du logarithme du module d'un signal video frequence a partir de ses composantes en quadrature, application a un dispositif de traitement d'informations radar ou de telecommunications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8107461A FR2503897A1 (fr) 1981-04-14 1981-04-14 Procede et dispositif de calcul du logarithme du module d'un signal video frequence a partir de ses composantes en quadrature, application a un dispositif de traitement d'informations radar ou de telecommunications

Publications (2)

Publication Number Publication Date
FR2503897A1 true FR2503897A1 (fr) 1982-10-15
FR2503897B1 FR2503897B1 (en:Method) 1983-05-13

Family

ID=9257378

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8107461A Granted FR2503897A1 (fr) 1981-04-14 1981-04-14 Procede et dispositif de calcul du logarithme du module d'un signal video frequence a partir de ses composantes en quadrature, application a un dispositif de traitement d'informations radar ou de telecommunications

Country Status (1)

Country Link
FR (1) FR2503897A1 (en:Method)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2571199A1 (fr) * 1984-09-28 1986-04-04 Rca Corp Appareil donnant la grandeur de la somme vectorielle de deux composantes vectorielles en quadrature dans un televiseur numerique
US4608567A (en) * 1984-06-22 1986-08-26 The United States Of America As Represented By The Secretary Of The Air Force Fast envelope detector with bias compensation
EP0226401A3 (en) * 1985-12-05 1988-08-31 Raytheon Company Pulse interference detection for a radar system
EP0225787A3 (en) * 1985-12-05 1988-09-07 Raytheon Company Radar system with automatic gain control
EP0264256A3 (en) * 1986-10-14 1990-02-07 Raytheon Company Apparatus and method for approximating the magnitude of a complex number

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173017A (en) * 1977-04-11 1979-10-30 The United States Of America As Represented By The Secretary Of The Army Programmable signal processor for Doppler filtering

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4173017A (en) * 1977-04-11 1979-10-30 The United States Of America As Represented By The Secretary Of The Army Programmable signal processor for Doppler filtering

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4608567A (en) * 1984-06-22 1986-08-26 The United States Of America As Represented By The Secretary Of The Air Force Fast envelope detector with bias compensation
FR2571199A1 (fr) * 1984-09-28 1986-04-04 Rca Corp Appareil donnant la grandeur de la somme vectorielle de deux composantes vectorielles en quadrature dans un televiseur numerique
EP0226401A3 (en) * 1985-12-05 1988-08-31 Raytheon Company Pulse interference detection for a radar system
EP0225787A3 (en) * 1985-12-05 1988-09-07 Raytheon Company Radar system with automatic gain control
EP0264256A3 (en) * 1986-10-14 1990-02-07 Raytheon Company Apparatus and method for approximating the magnitude of a complex number

Also Published As

Publication number Publication date
FR2503897B1 (en:Method) 1983-05-13

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