FIELD: physics.
SUBSTANCE: invention can be used in cases of using a single-position radiowave detection device (DD) for signal cover of two adjacent roads, one of which has a bend. The method consists in setting up DD in a road section, where they adjoin at a distance not exceeding 80% of the maximum possible DD detection zone length (DZ), so that the DD is on the outside of the bend angle of the road, behind the road with a straight section; the DZ axis coincides with the bisector of the bend angle of the road; in itiating a DD alarm in the event of an intruder crossing its DZ; analyzing of the Doppler frequency addition of the reflected signal at the output of the DD signal processing circuit during the entire time the intruder was in its DZ; subsequent applying the algorithm of finding the intruder direction on the road with a straight section by the presence of a positive or negative Doppler frequency addition of the reflected signal and the determination of the motion along the road with a bend by the presence of an alternating Doppler frequency addition of the reflected signal.
EFFECT: increasing the accuracy of indicating the direction of motion of the detected intruder and obtaining high reliability of the result using only one single-position radiowave detection device.
8 dwg
