Preceding vehicle recognition apparatus divides reflected waves into several groups and determines difference of intensity of reflected waves in each group, to recognize reflector in front of vehicle

摘要

A laser radar sensor irradiates laser radiations in front of vehicle and calculates distance to a reflector based on time interval between wave irradiation/reception. A calculator divides reflected waves into several groups and determines difference of intensity of reflected waves in each group. When difference is below a preset value, the reflected waves are integrated to recognize the reflector.