METHOD FOR PULSE WIDTH MODULATION OF A RADAR SYSTEM

摘要

The invention relates to a method for operating a radar system. Radar systems are used for determing the distance of at least one reflecting object in an observation area and/or the speed of the at least one reflecting object. Said type of radar system emits successive pulses corresponding to a predetermined pulse duration with a specific pulse repetition frequency as emission signals in the observation area and receives the emission pulses of the emission signal reflected on the at least one reflecting object as a receiving signal. The disadvantage of such a method is that it involves a high signal dynamics, which has a negative effect on the price of circuit parts required for signal processing. The novel method for working the radar system should be developed via an economic means. According to the novel method the signal dynamics are reduced by predetermining the average output of the emission signal and by reducing the average output of the emission signal by variation, preferably by varying the pulse repetition frequency and/or the pulse duration of the emission pulse to the specific output range. The method is particularly suitable for operating a distance warning system for a motor vehicle.