Real-time holographic surveillance system
Patent 5455590 Issued on October 3, 1995. Estimated Expiration Date: 
March 14, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 14, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesContraband detection system Planar active endfire radiating elements and coplanar waveguide filters with wide electronic tuning bandwidth Radiation imaging utilizing data reconstruction to provide transforms which accurately reflect wave propagation characteristics Patent #: 5170170 InventorsAssigneeApplicationNo. 212432 filed on 03/14/1994US Classes:342/179, Image production367/8Acoustic holographyExaminersPrimary: Lobo, Ian J.Attorney, Agent or FirmForeign Patent References
International ClassesG01S 013/89G03H 005/00 AbstractA 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.Other References
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