Communications: directive radio wave systems and devices (e.g. – Plural radar
Reexamination Certificate
2011-08-09
2011-08-09
Sotomayor, John B (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Plural radar
C342S180000, C342S188000, C342S153000, C342S154000, C342S157000, C342S158000
Reexamination Certificate
active
07994965
ABSTRACT:
A surveillance apparatus (100) is provided, said apparatus including a linear sub-array (101) of N omnidirectional transmitter elements (103) and a planar sub-array (102) of M receiver elements (104). A plurality of the transient elements (105) are generated by separating out at each of the receivers (104) the signals transmitted from the antenna elements (103) of the transmitter sub-array (101). This allows the geometry of each path (from each transmitter antenna element, to the point being imaged and back to the receiver antenna elements) to be converted to a delay or phase shift to focus on the particular point being imaged. The transient elements (105) form a cylindrical array (106) at the mid points between transmitter and receiver sub-arrays. Such a configuration enables a full 360 degrees of cover in azimuth and typically +/−60 degrees in elevation.
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McGuireWoods LLP
Metjahic, Esq. Safet
Sotomayor John B
Teledyne Australia Pty Ltd
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