Communications: directive radio wave systems and devices (e.g. – With particular circuit – Display
Patent
1994-03-14
1995-10-03
Lobo, Ian J.
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Display
367 8, G01S 1389, G03H 500
Patent
active
054555906
ABSTRACT:
A holographic surveillance system including means for generating electromagnetic waves; means for transmitting the electromagnetic waves toward a target at a plurality of predetermined positions in space; means for receiving and converting electromagnetic waves reflected from the target to electrical signals at a plurality of predetermined positions in space; means for processing the electrical signals to obtain signals corresponding to a holographic reconstruction of the target; and means for displaying the processed information to determine nature of the target.
The means for processing the electrical signals includes means for converting analog signals to digital signals followed by a computer means to apply a backward wave algorithm.
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Ynguesson et al, "Endfire Tapered Slot Antennas on Dielectric Substrates" IEEE Trans on Antennas and Propagation, vol. Ap. 33, No. 12, Dec. 1985.
A. L. Boyer, et al., Reconstruction of Ultrasonic Images by Backward Propagation, Ch. 18, 7/70, pp. 333-349.
H. D. Collins, Error Analysis in Scanned Holography, 1970, Thesis, Oregon State University.
B. P. Hildebrand, et al, An Introduction to Acoustical Holography, 1974, pp. vii, 20-21.
Aoki et al, Diagnosis of Under-Snow Radar Images by Three Dimensional Displaying Technique in Holographic Imaging Radar, Proc. of IGARSS '87 Symposium, May 18-21, 1987, pp. 571-576.
Collins H. Dale
Gribble R. Parks
Hall Thomas E.
McMakin Douglas L.
Battelle (Memorial Institute)
Lobo Ian J.
Zimmerman Paul W.
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