JPS55156456A - Signal detecting method - Google Patents

Signal detecting method

Info

Publication number
JPS55156456A
JPS55156456A JP6473679A JP6473679A JPS55156456A JP S55156456 A JPS55156456 A JP S55156456A JP 6473679 A JP6473679 A JP 6473679A JP 6473679 A JP6473679 A JP 6473679A JP S55156456 A JPS55156456 A JP S55156456A
Authority
JP
Japan
Prior art keywords
beta
calculating circuit
tau
value
finds
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
JP6473679A
Other languages
Japanese (ja)
Other versions
JPS5930354B2 (en
Inventor
Kunio Kotaki
Eiichi Suzuki
Isao Iwasaki
Mitsuru Nakatani
Kanji Yoshioka
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.)
Shimadzu Corp
Technical Research and Development Institute of Japan Defence Agency
Original Assignee
Shimadzu Corp
Technical Research and Development Institute of Japan Defence Agency
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 Shimadzu Corp, Technical Research and Development Institute of Japan Defence Agency filed Critical Shimadzu Corp
Priority to JP6473679A priority Critical patent/JPS5930354B2/en
Publication of JPS55156456A publication Critical patent/JPS55156456A/en
Publication of JPS5930354B2 publication Critical patent/JPS5930354B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Complex Calculations (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To carry likelihood ratio calculation out by evaluating an autocorrelation function from sample values of one autocorrelation and then by finding parameter beta (parameter in case that autocorrelation function R(tau) of a noise approximates curve R(O)exp(-betagamma)). CONSTITUTION:The product of observation value Y(t) from a sensor and input delay signal YD(t) is calculated by correlation calculating circuit 6 by integrating for constant time Tw to obtain value S(t). Here, Tw represents the updated time interval of beta. Power calculating circuit 5 finds the square value of Y(t) by integrating for a time width of Tw (The found value is denoted as P(t).). Then, beta calculating circuit 8 finds the value of beta(t) when curve y=exp(-beta(t).x) reaches point (tau(t), S(t)/P(t)). Next, beta(t) is sent to likelihood ratio calculating circuit 9 and used there as parameter beta of a likelihood ratio calculation expression. Lastly, tau calculating circuit 7 finds an intersection between curve (y) and straight line y=0.2 to obtain tau(t+Tw).
JP6473679A 1979-05-24 1979-05-24 Signal detection method Expired JPS5930354B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6473679A JPS5930354B2 (en) 1979-05-24 1979-05-24 Signal detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6473679A JPS5930354B2 (en) 1979-05-24 1979-05-24 Signal detection method

Publications (2)

Publication Number Publication Date
JPS55156456A true JPS55156456A (en) 1980-12-05
JPS5930354B2 JPS5930354B2 (en) 1984-07-26

Family

ID=13266721

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6473679A Expired JPS5930354B2 (en) 1979-05-24 1979-05-24 Signal detection method

Country Status (1)

Country Link
JP (1) JPS5930354B2 (en)

Also Published As

Publication number Publication date
JPS5930354B2 (en) 1984-07-26

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