Communications: directive radio wave systems and devices (e.g. – Determining distance
Reexamination Certificate
2007-03-13
2007-03-13
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
C342S027000, C342S028000, C342S061000, C342S066000, C342S104000, C342S105000, C342S107000, C342S109000, C342S113000, C342S114000, C342S128000, C342S133000, C342S134000, C342S135000, C342S139000, C342S146000, C342S147000, C342S175000, C342S195000
Reexamination Certificate
active
11061304
ABSTRACT:
The invention relates to a method for detecting the passage by a vehicle of a determined point for monitoring on a road, wherein from a remotely situated location a radar beam is transmitted continuously to the point for monitoring, reflections from the transmitted radar beam are received at the remotely situated location, and it is determined from the received reflections that the vehicle is passing the point for monitoring. The radar beam can herein be transmitted at an acute angle to the travel direction of the passing vehicle. The detection can be used to activate a red-light camera, to measure the speed of the vehicle or measure the traffic intensity, without sensors, for instance induction loops, having to be arranged in the road for this purpose.
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Gatsometer B.V.
Gregory Bernarr E.
Johnson Victor E.
Morgan & Lewis & Bockius, LLP
Trecartin Richard F.
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