Method of imaging an object by ultrasonic or electromagnetic wav

Details Method of imaging an object by ultrasonic or electromagnetic wav Method of imaging an object by ultrasonic or electromagnetic wav

1986-12-24

1989-06-20

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Acoustic image conversion

367103, 367104, 73633, G03B 4206

Patent

active

048414891

ABSTRACT:
A method of imaging an object by the ultrasonic or electromagnetic wave by mechanically or electronically scanning the ultrasonic or electromagnetic wave transmitting/receiving system to transmit the ultrasonic or electromagnetic wave beam spreading in space of the object and using the trace (TOF locus) from the transmission to the reception while receiving the reflected wave from the object, and sequentially reproducing the line image at the central line of the synthetic aperture range using the received signal group from the scanning points in the synthetic aperture range to sequentially image the area to be imaged while scanning the ultrasonic or electromagnetic wave transmitting/receiving system. An imaging apparatus applied with the method has a relatively simple hardware structure for reproducing the image and is also able to perform the operation in real time.

REFERENCES:
patent: 3978444 (1976-08-01), Hitchcock
patent: 4458342 (1984-07-01), Tournois
Gough, Side-Looking Sonar or Radar Using Phase Difference Monopulse Techniques Coherent and Noncoherent pplications, Aug. 1983, pp. 392-398.
Ishii et al., "Basic Study about the Ultrasonic Defect Dectecting the Synthetic Aperture", 1985, pp. 327-328.
"Review and Discussion of the Development of Synthetic Aperture Focusing Technique for Ultrasonic Testing".
Acoustic Holography, vol. 7, pp. 327-345, (1977), "Ultrasonic Synthetic Aperture Image", M. Dick, D. E. Dick, F. D. McLoad, N. B. Kindig, pp. 332-333.

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