JPS568921A - Signal detector - Google Patents

Signal detector

Info

Publication number
JPS568921A
JPS568921A JP8604479A JP8604479A JPS568921A JP S568921 A JPS568921 A JP S568921A JP 8604479 A JP8604479 A JP 8604479A JP 8604479 A JP8604479 A JP 8604479A JP S568921 A JPS568921 A JP S568921A
Authority
JP
Japan
Prior art keywords
pulses
leading
pulse
pri
following
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.)
Pending
Application number
JP8604479A
Other languages
Japanese (ja)
Inventor
Naoki Fujiyama
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8604479A priority Critical patent/JPS568921A/en
Publication of JPS568921A publication Critical patent/JPS568921A/en
Pending 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
    • H03K5/19—Monitoring patterns of pulse trains

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Manipulation Of Pulses (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To detect the number of pulses following one leading pulse by judging an n-let PRI (Pulse Repetition Interval) pattern signal in real time from the frequency distribution of pulses to time intervals. CONSTITUTION:From a string of pusles input to input terminal 1, a leading pulse with an assigned pulse interval is extracted by using the 1st PRI filter circuit 3. Similarly, the 2nd PRI filter 4 is used to extract pulses following the leading pulse. Here, the number of pulses input within a certain time is denoted as Z, the number of the leading pulses within the certain time is denoted as X, and the number of pulses following the leading pulses is as Y. Then, number N of pulses following one leading pulse is found from N=Y/X. Then, when Z<=S1, X+Y>=Z.S2 and N>=1 for the 1st normal value S1 and the 2nd normal value S2 (<=1), an n-let type PRI pattern signal is judged.
JP8604479A 1979-07-04 1979-07-04 Signal detector Pending JPS568921A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8604479A JPS568921A (en) 1979-07-04 1979-07-04 Signal detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8604479A JPS568921A (en) 1979-07-04 1979-07-04 Signal detector

Publications (1)

Publication Number Publication Date
JPS568921A true JPS568921A (en) 1981-01-29

Family

ID=13875669

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8604479A Pending JPS568921A (en) 1979-07-04 1979-07-04 Signal detector

Country Status (1)

Country Link
JP (1) JPS568921A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5961312A (en) * 1996-02-14 1999-10-05 Nkk Corporation Combustion burner and combustion method thereof in furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5961312A (en) * 1996-02-14 1999-10-05 Nkk Corporation Combustion burner and combustion method thereof in furnace

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