JPH0425017B2 - - Google Patents

Info

Publication number
JPH0425017B2
JPH0425017B2 JP59256506A JP25650684A JPH0425017B2 JP H0425017 B2 JPH0425017 B2 JP H0425017B2 JP 59256506 A JP59256506 A JP 59256506A JP 25650684 A JP25650684 A JP 25650684A JP H0425017 B2 JPH0425017 B2 JP H0425017B2
Authority
JP
Japan
Prior art keywords
ultrasonic
frequencies
signal
reflected
normalized
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.)
Expired - Lifetime
Application number
JP59256506A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61135640A (ja
Inventor
Yoshinori Hayakawa
Toshuki Suzuki
Tadashi Fujii
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.)
Terumo Corp
Original Assignee
Terumo 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 Terumo Corp filed Critical Terumo Corp
Priority to JP59256506A priority Critical patent/JPS61135640A/ja
Publication of JPS61135640A publication Critical patent/JPS61135640A/ja
Publication of JPH0425017B2 publication Critical patent/JPH0425017B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G01S7/52036—Details of receivers using analysis of echo signal for target characterisation
    • 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
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/88—Sonar systems specially adapted for specific applications
    • G01S15/89—Sonar systems specially adapted for specific applications for mapping or imaging
    • G01S15/8906—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques
    • G01S15/895—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques characterised by the transmitted frequency spectrum
    • G01S15/8952—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques characterised by the transmitted frequency spectrum using discrete, multiple frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
JP59256506A 1984-12-06 1984-12-06 超音波測定方法およびその装置 Granted JPS61135640A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59256506A JPS61135640A (ja) 1984-12-06 1984-12-06 超音波測定方法およびその装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59256506A JPS61135640A (ja) 1984-12-06 1984-12-06 超音波測定方法およびその装置

Publications (2)

Publication Number Publication Date
JPS61135640A JPS61135640A (ja) 1986-06-23
JPH0425017B2 true JPH0425017B2 (en]) 1992-04-28

Family

ID=17293577

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59256506A Granted JPS61135640A (ja) 1984-12-06 1984-12-06 超音波測定方法およびその装置

Country Status (1)

Country Link
JP (1) JPS61135640A (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0741642B2 (ja) * 1992-07-27 1995-05-10 東芝機械株式会社 成形金型

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58173539A (ja) * 1982-04-07 1983-10-12 富士通株式会社 超音波による生体組織特性測定方法

Also Published As

Publication number Publication date
JPS61135640A (ja) 1986-06-23

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