Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Radar mounted on and controls land vehicle
Patent
1998-01-16
2000-03-21
Lobo, Ian J.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Radar mounted on and controls land vehicle
342 80, 342 91, G01S 1393
Patent
active
060407956
ABSTRACT:
Data is acquired by transmitting radio waves or by receiving radio waves by means of a fixed beam provided in a vehicle-mounted radar apparatus, and an antenna unit is provided which has such an antenna gain that a straight line-of-sight distance with respect to each straight line-of-sight angle from a subject vehicle to a preceding vehicle traveling on a subject-vehicle lane is set as a maximum detection distance. Therefore, it is possible to detect a preceding vehicle traveling on a subject-vehicle lane from a subject vehicle, and not detect objects such as vehicles which are present in a longer distance than is necessary, thereby alleviating a burden on signal processing.
REFERENCES:
patent: 5023617 (1991-06-01), Deering
patent: 5402129 (1995-03-01), Gellner et al.
patent: 5652589 (1997-07-01), Ono et al.
patent: 5694130 (1997-12-01), Suzuki et al.
Woll, JD., "Monopulse Doppler radar for vehicle applications", Proceedings of the Intelligent Vehicles '95. symposium, (Cat. No. 95TH8132) pp. 42-47, Published : New York, NY, USA, Sep. 1995.
Lobo Ian J.
Mitsubishi Denki & Kabushiki Kaisha
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