Electronically focused imaging system and method

Details Electronically focused imaging system and method Electronically focused imaging system and method

1974-07-12

1976-04-27

Wilbur, Maynard R.

Communications: electrical

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Intelligence comparison for controlling

73 678S, G01V 100, H04B 1300, H04R 1500

Patent

active

039538257

ABSTRACT:
An improved electronically focused imaging system for focusing transmitted acoustic waves into a focal line and for scanning the focal line for waves either reflected or transmitted from an object of interest. The system includes N transducer elements in a transmitter array and N transducer elements in a receiver array. These 2N elements can resolve N.sup.2 locations on the object of interest. In one embodiment the transmitter array is pulsed through a delay line that is activated by two, independent, frequency varying chirp signals. In this embodiment the receiver array is focused to scan the focal line and to develop a rectangular raster so that the output of the system is viewable on an oscilloscope or a television screen. In another embodiment the transmitter array is pulsed by a delay line activated by one chirp signal and a 45.degree. raster is developed.

REFERENCES:
patent: 3090030 (1963-05-01), Schuck
patent: 3577772 (1971-05-01), Perilhou et al.
patent: 3778757 (1973-12-01), Houston
patent: 3794964 (1974-02-01), Katakura
patent: 3815409 (1974-06-01), Macovski
Suckling and Hendrickson, Image Scanner Using Diode Switching, The Journal of the Acoustical Society of America, Vol. 45, No. 4, 1969, pp. 892-894.

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