Search Results

Many projecting rod-type antennas, which stick to vehicles, are spoiling vehicle proportion and making wind shield noise. A flat and low-profile antenna, especially which can be conform to the vehicle body's contours. This paper proposes a new flat and low-profile antenna. The developed Band-Combining Flat (BCF) antenna is composed of multiple antenna elements, each characterized by high gain but narrow bandwidth. In order to realize TV reception, we have developed a band combining technology for the plural antenna elements. The characteristics of the BCF antenna are verified on a surface of an actual vehicle. The BCF antenna has performance for fine reception of TV broadcasting in VHF and UHF bands with high gain characteristic.

A new method of white road line recognition is proposed. The method is to use both low and high spatial frequency image data to detect white road lines. Lane region is detected using low spatial frequency data. Contours of white lines are determined from high spatial frequency data. The contours are evaluated by the lane region. White road lines are accurately detected from 5m to 40m in front of the vehicle at a detection rate of more than 99.4%. It also detects vehicle pitch angle with the error of 0.02°.