Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Radar mounted on and controls land vehicle
Reexamination Certificate
1998-07-06
2001-05-29
Sotomayor, John B. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Radar mounted on and controls land vehicle
C342S099000, C342S106000, C342S114000, C342S115000, C342S117000
Reexamination Certificate
active
06239738
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a signal-processing method in a motor-vehicle radar arrangement, and a radar arrangement for executing the method.
Radar arrangements in motor vehicles have long been known per se. In the known radar arrangements, the echo signals are particularly used for determining range and velocity with respect to an object located in the direction of travel, for example a vehicle that is traveling ahead or an obstacle. Other motor-vehicle radar arrangements are used with an observation direction that is diagonal or transverse to the direction of travel for determining the verge of the road.
U.S. Pat. No. 4,053,026, for example, discloses a radar arrangement for a motor vehicle, in which a braking procedure is automatically initiated by a logical circuit when a hazardous situation has been ascertained.
Radar-based spacing regulation in motor vehicles is described in Spektrum der Wissenschaft [Science Spectrum], June 1990, pp. 25-34.
SUMMARY OF THE INVENTION
It is the object of the present invention to provide a signal-processing method for a motor-vehicle radar arrangement that produces more comprehensive traffic information, as well as a radar arrangement for executing the method.
The invention is particularly advantageous in monitoring and predicting traffic influences (distances between preceding vehicles, changes due to braking or acceleration, velocities), and in classifying preceding vehicles, the road verge and objects.
In contrast to the prior art cited at the outset, in which diverted signal paths with reflections at walls, the ground, etc., are mentioned as being disadvantageous and confusing, such signal diversions are purposefully and advantageously evaluated in the present invention.
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Schneider, R. et al, “Millimeter Wave Imaging of Traffic Scenarios”, Intelligent vehicles Symposium, Proc. IEEE, pp. 327-332, 1996.*
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International Radar Conference, Alexandria, May 8-11, 1995, May 8, 1995, Institute of Electrical and Electronic Engineers, pp. 380-385, XP000529130 Eriksson L H et. al “A High Performance Automotive Radar For Automatic AICC”.
Proceedings of the International Conference on Systems Engineering, Fairborn, Aug. 1-3, 1991, Nr. Conf. 3, Aug. 1, 1991, Institute of Elecrical Engineers, pp. 6-12, XP000302895 NOVAK L M: “A Comparison of 1-D and 2-D Algorithms For Radar Target”.
Schneider Robert
Wanielik Gerd
Daimler-Benz Aktiengesellschaft
Kinberg Robert
Sotomayor John B.
Venable
Voorhees Catherine M.
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