GB1515436A - Imaging apparatus - Google Patents

Imaging apparatus

Info

Publication number
GB1515436A
GB1515436A GB1630876A GB1630876A GB1515436A GB 1515436 A GB1515436 A GB 1515436A GB 1630876 A GB1630876 A GB 1630876A GB 1630876 A GB1630876 A GB 1630876A GB 1515436 A GB1515436 A GB 1515436A
Authority
GB
United Kingdom
Prior art keywords
array
field
elements
arrays
energy
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
Application number
GB1630876A
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.)
CBS Corp
Original Assignee
Westinghouse 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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1515436A publication Critical patent/GB1515436A/en
Expired 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
    • G01S7/56—Display arrangements
    • G01S7/62—Cathode-ray tube displays
    • G01S7/6263—Cathode-ray tube displays in which different colours are used
    • 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
    • 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
    • G01S15/8909—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration
    • G01S15/8915—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array
    • G01S15/8918—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a static transducer configuration using a transducer array the array being linear
    • 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
    • G01S15/8934—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a dynamic transducer configuration
    • G01S15/8938—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a dynamic transducer configuration using transducers mounted for mechanical movement in two dimensions
    • G01S15/894—Short-range imaging systems; Acoustic microscope systems using pulse-echo techniques using a dynamic transducer configuration using transducers mounted for mechanical movement in two dimensions by rotation about a single axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

1515436 Ultrasonic imaging; scanning arrangements WESTINGHOUSE ELECTRIC CORP 22 April 1976 [23 April 1975] 16308/76 Heading G1G An imaging apparatus comprises an array 26 of receiving elements 62, Fig. 5, for receiving energy (e.g. acoustic energy) from a field of view, the array having a higher concentration of the elements where energy is received from the centre of the field than elsewhere to give a relatively high resolution at the centre of said field. The apparatus also includes means for processing and displaying signals derived from the elements. The target area may be isonified by a transmittter array 14 mounted similarly to the receiver 26, effectively a circular array in operation. As shown for a fixed viewing range, both arrays 14, 26 are mounted on a common rotation axis behind a lens 30 and the elements of both arrays near the axis may be common. For variable range use, the arrays may be separated Fig. 4 (not shown) and may have different and variable angular speeds and pulse repetition rates. The synchronized PPI 42 incorporates a long persistence CRT 44. The radial sweep may be non- linear, or linear combined with a sampler 40 having a non-uniform rate. In a further embodiment Fig. 11 (not shown), false colour may be used to give range information. A further arrangement (not shown) gives a rectangular scan. Partial or total isonification of the field of view can be effected without the lens (30', Fig. 4).
GB1630876A 1975-04-23 1976-04-22 Imaging apparatus Expired GB1515436A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57069575A 1975-04-23 1975-04-23

Publications (1)

Publication Number Publication Date
GB1515436A true GB1515436A (en) 1978-06-21

Family

ID=24280679

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1630876A Expired GB1515436A (en) 1975-04-23 1976-04-22 Imaging apparatus

Country Status (2)

Country Link
CA (1) CA1053360A (en)
GB (1) GB1515436A (en)

Also Published As

Publication number Publication date
CA1053360A (en) 1979-04-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee