Communications: directive radio wave systems and devices (e.g. – Determining distance – Combined with determining direction
Reexamination Certificate
2007-07-31
2007-07-31
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
Combined with determining direction
C342S005000, C342S126000
Reexamination Certificate
active
10614097
ABSTRACT:
A positioning system includes a passive, isotropic reflecting landmark at a fixed position and a device. The device transmits an electromagnetic pulse having a circular polarization and receives a return signal over a period of time. The return signal includes a reflected pulse from the reflecting landmark. The processes the return signal to isolate the reflected pulse from the return signal and to determine a range from the device to the reflecting landmark. The reflecting landmark includes a first passive reflector, a second passive reflector, and a static structure configured to statically position the second passive reflector at an angle relative to the first passive reflector. The device optionally moves in a particular direction while receiving the return signal, detects a Doppler shift in the reflected pulse portion of the return signal, and determines an angle between the particular direction and a straight line between the device and the landmark.
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Alsomiri Isam
Morgan & Lewis & Bockius, LLP
Navcom Technology Inc.
Tarcza Thomas H.
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