| 摘要 |
PURPOSE:To enhance reliability, by transmitting a wave motion signal to a plurality of reflectors arranged to a predetermined position from the wave motion/electricity converter element revolving on a moving body and receiving the same by said reflectors while taking the matching of a table fabricated by calculating a distance and an angle and the table of the reflectors. CONSTITUTION:An ultrasonic wave is transmitted from the ultrasonic vibrator 6 revolving by the ultrasonic vibrator driving mechanism 7 mounted to a moving vehicle 1 and reflected waves by ultrasonic wave reflectors 5a-5c are received by the vibrator 6. The distance from the reflector 5 is calculated through an amplifier 11 by a distance measuring circuit 12 and the distance corresponding to an angle is tabulated from the azimuth signal and the distance signal inputted by a signal processing circuit 13. Then, the correlation function with the distance table to the azimuth of the reflectors 5a-5c present in the processing circuit 13 is calculated and the azimuth and distance of the reflector 5 in the relative cooridnates on the vehicle 1 are calculated. Further, the original position (the center of the moving vehicle) on the relative coordinate is calculated on the coordinates having the reflector 5 arranged thereto by an operation circuit 14. |
