JPS5753119A - Pulse extracting filter - Google Patents

Pulse extracting filter

Info

Publication number
JPS5753119A
JPS5753119A JP55128865A JP12886580A JPS5753119A JP S5753119 A JPS5753119 A JP S5753119A JP 55128865 A JP55128865 A JP 55128865A JP 12886580 A JP12886580 A JP 12886580A JP S5753119 A JPS5753119 A JP S5753119A
Authority
JP
Japan
Prior art keywords
supplied
circuit
input signal
signal
walsh
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
JP55128865A
Other languages
Japanese (ja)
Other versions
JPS6335124B2 (en
Inventor
Naoki Suehiro
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP55128865A priority Critical patent/JPS5753119A/en
Publication of JPS5753119A publication Critical patent/JPS5753119A/en
Publication of JPS6335124B2 publication Critical patent/JPS6335124B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/125—Discriminating pulses
    • H03K5/1252—Suppression or limitation of noise or interference

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Filters And Equalizers (AREA)

Abstract

PURPOSE:To extract a pulse signal from an input signal accurately, by subjecting the input signal to Walsh conversion after making the input signal into plural signals different in phase. CONSTITUTION:The signal of indistinct pulse width, time point, and crest value is subjected to A/D conversion and is supplied to shift registers 121, 122-12n-1. Signals which are obtained as the result and have phases shifted are supplied to Walsh converting circuits 131, 132-13n of the same phase. Sequence spectrums obtained by this Walsh conversion are supplied to a squaring and averaging circuit 14, and spectrums obtained from this circuit 14 are suplied to a differential circuit 15 and are differentiated sequentially to obtain differences between spectrums in the direction of the time base. The output signal of the differential circuit 15 is given to a cut-off sequence setting circuit 16 to obtain the inclination of the spectrum. This value is supplied to filters 171, 172-17n to remove a high band corresponding to noise components.
JP55128865A 1980-09-17 1980-09-17 Pulse extracting filter Granted JPS5753119A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55128865A JPS5753119A (en) 1980-09-17 1980-09-17 Pulse extracting filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55128865A JPS5753119A (en) 1980-09-17 1980-09-17 Pulse extracting filter

Publications (2)

Publication Number Publication Date
JPS5753119A true JPS5753119A (en) 1982-03-30
JPS6335124B2 JPS6335124B2 (en) 1988-07-13

Family

ID=14995271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55128865A Granted JPS5753119A (en) 1980-09-17 1980-09-17 Pulse extracting filter

Country Status (1)

Country Link
JP (1) JPS5753119A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6477310A (en) * 1987-05-29 1989-03-23 Schlumberger Technologies Inc Method of determining transmission coefficient of ac calibrator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52113191A (en) * 1976-02-23 1977-09-22 American Electronic Lab Signal processing method and device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52113191A (en) * 1976-02-23 1977-09-22 American Electronic Lab Signal processing method and device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6477310A (en) * 1987-05-29 1989-03-23 Schlumberger Technologies Inc Method of determining transmission coefficient of ac calibrator

Also Published As

Publication number Publication date
JPS6335124B2 (en) 1988-07-13

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