FR2411506A1 - Echo-sounder automatic pulse amplitude compensator - has multivibrator coupled to analog memory addressed by sequential accessing using differential amplifier - Google Patents

Echo-sounder automatic pulse amplitude compensator - has multivibrator coupled to analog memory addressed by sequential accessing using differential amplifier

Info

Publication number
FR2411506A1
FR2411506A1 FR7736823A FR7736823A FR2411506A1 FR 2411506 A1 FR2411506 A1 FR 2411506A1 FR 7736823 A FR7736823 A FR 7736823A FR 7736823 A FR7736823 A FR 7736823A FR 2411506 A1 FR2411506 A1 FR 2411506A1
Authority
FR
France
Prior art keywords
sounder
echo
differential amplifier
pulse amplitude
automatic pulse
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.)
Withdrawn
Application number
FR7736823A
Other languages
French (fr)
Inventor
Michel Auphan
Ludo Casper Baghuis
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.)
Laboratoires dElectronique Philips SAS
Original Assignee
Laboratoires dElectronique et de Physique Appliquee
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 Laboratoires dElectronique et de Physique Appliquee filed Critical Laboratoires dElectronique et de Physique Appliquee
Priority to FR7736823A priority Critical patent/FR2411506A1/en
Priority to AU42184/78A priority patent/AU4218478A/en
Priority to ES475706A priority patent/ES475706A1/en
Publication of FR2411506A1 publication Critical patent/FR2411506A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H03G3/3073—Circuits generating control signals when no carrier is present, or in SSB, CW or pulse receivers
    • 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
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52023—Details of receivers
    • G01S7/52033—Gain control of receivers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

The automatic pulse amplitude compensation for the reflected pulses received by an echo-sounder or ultrasonic transducer. The circuit hunts for an optimum compensation as a function of reflection time and holds it automatically. Compensation is based on the use of a multivibrator fed both by the reflected signal and an error correction signal derived from an analogue memory addressed by sequential accessing using a differential amplifier. Correction is derived from the reflected signal via a detector and an analogue gate. The memory includes a twin input summing circuit receiving the signal to be stored and that from an analogue phase shift register.
FR7736823A 1977-12-07 1977-12-07 Echo-sounder automatic pulse amplitude compensator - has multivibrator coupled to analog memory addressed by sequential accessing using differential amplifier Withdrawn FR2411506A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7736823A FR2411506A1 (en) 1977-12-07 1977-12-07 Echo-sounder automatic pulse amplitude compensator - has multivibrator coupled to analog memory addressed by sequential accessing using differential amplifier
AU42184/78A AU4218478A (en) 1977-12-07 1978-12-04 Automatic correction of the amplification of echo pulses
ES475706A ES475706A1 (en) 1977-12-07 1978-12-05 Echo-sounder automatic pulse amplitude compensator - has multivibrator coupled to analog memory addressed by sequential accessing using differential amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7736823A FR2411506A1 (en) 1977-12-07 1977-12-07 Echo-sounder automatic pulse amplitude compensator - has multivibrator coupled to analog memory addressed by sequential accessing using differential amplifier

Publications (1)

Publication Number Publication Date
FR2411506A1 true FR2411506A1 (en) 1979-07-06

Family

ID=9198555

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7736823A Withdrawn FR2411506A1 (en) 1977-12-07 1977-12-07 Echo-sounder automatic pulse amplitude compensator - has multivibrator coupled to analog memory addressed by sequential accessing using differential amplifier

Country Status (3)

Country Link
AU (1) AU4218478A (en)
ES (1) ES475706A1 (en)
FR (1) FR2411506A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2478929A1 (en) * 1980-03-21 1981-09-25 Labo Electronique Physique CIRCUIT FOR PROCESSING RECEPTION SIGNALS DELIVERED BY A MOSAIC OF INDIVIDUAL ULTRASONIC TRANSDUCERS AND APPARATUS FOR EXPLORING MEDIA BY ULTRASONIC METHOD EQUIPPED WITH SUCH A CIRCUIT OF TREATMENT

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2478929A1 (en) * 1980-03-21 1981-09-25 Labo Electronique Physique CIRCUIT FOR PROCESSING RECEPTION SIGNALS DELIVERED BY A MOSAIC OF INDIVIDUAL ULTRASONIC TRANSDUCERS AND APPARATUS FOR EXPLORING MEDIA BY ULTRASONIC METHOD EQUIPPED WITH SUCH A CIRCUIT OF TREATMENT
EP0036688A1 (en) * 1980-03-21 1981-09-30 Laboratoires D'electronique Et De Physique Appliquee L.E.P. Device for exploring by the ultrasonic method with a mosaic of transducers produced in an electrostrictive material

Also Published As

Publication number Publication date
AU4218478A (en) 1979-06-14
ES475706A1 (en) 1979-04-01

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Legal Events

Date Code Title Description
ST Notification of lapse