Communications: directive radio wave systems and devices (e.g. – Transmission through media other than air or free space
Reexamination Certificate
2008-03-18
2008-03-18
Lobo, Ian J. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Transmission through media other than air or free space
C342S028000
Reexamination Certificate
active
07345618
ABSTRACT:
Sensing moving entities includes transmitting a stepped-frequency radar signal including multiple frequencies through a wall from a first side of the wall to a second side of the wall. Portions of the radar signal that are reflected by entities located beyond the second side of the wall are detected. The reflected portions are processed to generate processed data including information associated with frequency shifts between the transmitted signal and the detected signal. The processed data is analyzed to determine if reflected portions are associated with moving entities.
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Cole Stephen
Gill Raymond
Hill Ronald
McNeill James
O'Donnell Daniel
Fish & Richardson P.C.
L-3 Communications CyTerra Corporation
Lobo Ian J.
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