Communications: directive radio wave systems and devices (e.g. – Radar transponder system – Combined with primary radar system
Reexamination Certificate
2007-03-27
2007-03-27
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Radar transponder system
Combined with primary radar system
C342S041000, C342S042000, C342S051000, C342S104000, C342S107000, C342S109000, C342S113000, C342S118000, C342S125000, C342S128000, C342S146000, C342S147000, C342S175000, C342S188000, C342S361000
Reexamination Certificate
active
10898705
ABSTRACT:
A vehicle positioning and tracking radar system includes a rotating antenna with a pair of spatially separated transmit feeds for simultaneously transmitting a pair of frequency-modulated continuous-wave (FMCW) electromagnetic signals having a first polarisation and a pair of spatially separated receive feeds for receiving an electromagnetic signal having a second polarisation, wherein the first and second polarisations are different from one another, such that the transmit feed and receive feed at the rotating antenna are isolated from each other; and a coded modulated transponder receives transmit signals from the rotating antenna with the first polarization and transmits a receive signal to the rotating antenna with the second polarization.
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Edwards David John
Grothusen Jan
Pearce Dominic Robert
Brandau Rebecca J.
Gregory Bernarr E.
Guidance Navigation Limited
Husch & Eppenberger LLC
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