Communications: directive radio wave systems and devices (e.g. – Determining direction
Reexamination Certificate
2003-05-21
2009-08-11
Tarcza, Thomas H (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining direction
C342S090000, C342S126000, C342S133000, C342S139000, C342S146000
Reexamination Certificate
active
07573419
ABSTRACT:
The present inventive concept for bistatic or monostatic radar utilization discloses a method and a system for unambiguous angle resolution of a sparse wide-band array antenna by utilizing an ultra wide-band signal, generally a wide-band noise signal which may be continuous bandwidth limited white or colored noise. The noise signal is typically generated and radiated by a transmitting antenna covering the entire reception range of a receiving sparse antenna array. An echo signal is received by the sparse receiving array containing n antenna elements, which are generally positioned with separation distances of several wavelengths without creating strong grating lobes due to the type of generated transmit signal. By means of a selected auto-correlation function defining the wide-band noise signal power spectrum, the convolution of the radiated output signal and the received echo input signal will give the target range information, the individual time-delay setting for each antenna element will give an unambiguous angular resolution.
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Brainard Timothy A
Nixon & Vanderhye P.C.
Tarcza Thomas H
Telefonaktiebolaget LM Ericsson (publ)
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