Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Radar mounted on and controls land vehicle
Patent
1998-07-23
2000-01-25
Gregory, Bernarr E.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Radar mounted on and controls land vehicle
342 61, 342 71, 342 72, 342118, 342175, 342195, 701 1, 701 36, 701301, G01S 1393
Patent
active
06018308&
ABSTRACT:
An obstacle recognition system for automotive vehicles is provided which is designed to distinguish preceding vehicles from other objects and uses data thereof in intervehicle distance control, for example. The system includes a radar unit and a preceding vehicle determining circuit. The radar unit receives a signal produced by reflection of at least one of transmitted radar signals from an obstacle present in a given obstacle detectable zone to determine a distance to the obstacle and a horizontal and a vertical angle of the obstacle from a preselected reference direction. The preceding vehicle determining circuit includes a two-dimensional shape data producing circuit that produces two-dimensional shape data of the obstacle on a two-dimensional plane in a width-wise and a vertical direction of the system vehicle based on the distance and the horizontal and vertical angles determined by the radar unit and a non-vehicle determining circuit that determines the obstacle as an object other than the vehicle when the two-dimensional shape data of the obstacle lies out of an ordinary vehicle shape range.
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Denso Corporation
Gregory Bernarr E.
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