Forward warning radar system for automobiles

摘要

PURPOSE:To enable quick detection of interrupting vehicle, etc., by preparing a plurality of obstruction detecting systems and controlling the receiving signals for every obstruction detecting systems. CONSTITUTION:First, a control calculator 51 gives an instruction to a phase controller 44 to control the output azimuth of a pseudo noise(PN) generator 43 and is shifted to the increasing control for the output azimuth phase of the generator 43. Then, when the accumulated value of the output from a demodulator 32 reaches the specified threshold, the calculator 51 judges that there is any obstruction in the front and outputs the output of obstruction detection to a display, etc. When any obstruction is detected in the obstruction detecting system related to the generator 33, the calculator 51 regulates the output phase of a generator 43 to be zero and the accumulated value of the output from the demodulator 42 is compared with the threshold. Thus, in the state where any obstruction is detected by the system related to the generator 33 while a plurality of obstruction detecting systems are provided, the monitoring/detecting of interrupting vehicles, etc., is performed by the system related to the generator 43.