Patent ID: 6590522
Filing Date: 2003-07-08
Classification: G01S

Abstract:
A pulse radar device, comprising:a timing control means that controls a transmit interval of a pulse signal; a transmitting means that transmits the pulse signal under the control of the timing control means; a receiving means that receives receive signals including a reflection signal component from a target object based on the pulse signal and a noise component; a receive signal change detecting means that detects a change in an assembly of the receive signals of an assembly of pulse signals at least as many times as a number of occurrences of transmissons during a first transmit interval under the control of the timing control means, and detects a change in the assembly of the pulse signals at least as many times as a number of occurrences of transmissions during a second transmit interval; a reflection signal rising detecting means that detects a rising time point of the reflection signal component based on the change in the assembly of the receive signals; and a ranging/detecting means that obtains a distance value based on the rising rime point of the reflection signal component and judges a presence of a target object.