Patent ID: 7030807
Filing Date: 2006-04-18
Classification: G01S

Abstract:
1. A radar device comprising: a receiving section demodulating a signal which arrives from a target as a response to a wave signal modulated with a first pulse signal, to generate a second pulse signal; a signal specifying section specifying such two different instances that an absolute value of a deviation of a ratio of two instantaneous values of the second pulse signal from a reference value as a ratio of two instantaneous values of the first pulse signal is to be minimum, the two instantaneous values of the first and second pulse signals being with a predetermined interval therebetween on a time axis; and a distance evaluating section evaluating a relative distance to the target as a difference between a reference instance and one of specified two different instances or an instance near the specified two different instances, the reference instance being an instance at which the wave signal is transmitted on the time axis.