Procedure for operating a radar system, radar system with at least two radar sensors and vehicle with at least one radar system

摘要

The invention concerns a process for operating a radar system (12),a radar system (12) and a vehicle (10) with at least one radar system (12).The radar system (12) shall comprise at least two radar sensors (18),whose field of vision (24) overlaps at least partially in a overlapping zone (26).For two of the radar sensors (18), at least one measurement cycle for radar arm measurements shall be performed.At least one block identification routine (30) shall be performed to detect blockages of at least one radar sensor (18), using at least part of the detection (28) of at least one measurement cycle.At least part of the detection (28) of at least one measurement cycle sub-zones (38, 40) shall be assigned to the overlap zone (26),defined with respect to distances from at least two radar sensors (18).At least one radar sensor (18) is used as a reference radar sensor and another radar sensor (18) is used as a test radar sensor for the block identification routine (30).A number of detections (28) in at least one of the sub-zones (38, 40) for the reference radar sensor and for the test radar sensor.A hit number is determined in at least one sub-zone (38, 40), with a hit being realised,if a reference radar sensor (18) detection (28) and a test radar sensor (18) detection (28) are within at least one predefined hit distance (52).At least one hit rate is determined from the ratio of the number of hits in at least one sub-zone (38, 40) and the number of detections (28) of the reference radar sensor (18).At least one hit number is compared to at least one threshold value and the result of the comparison determines an information about the blocking state of the test radar sensor.