公开(公告)号：US20240264271A1

公开(公告)日：2024-08-08

申请号：US18432730

申请日：2024-02-05

Applicant: Axis AB

Inventor： Sebastian HEUNISCH ,  Santhosh NADIG

IPC: G01S7/35 ,  G01S7/41

CPC classification number: G01S7/354 ,  G01S7/41

Abstract: A method for identifying that a first FMCW radar unit is subject to parallel incoherent interference from a second FMCW radar unit is disclosed. The method comprises: acquiring a range-Doppler map, calculating a range-resolved signal for a negative half (corresponding to negative Doppler shifts) and a positive half (corresponding to positive Doppler shifts) of the range-Doppler map, and calculating a range-dependent noise profile for the range-Doppler map as, for each range interval, the smaller of the range-resolved signal for the negative half and the positive half. The method further comprises: identifying parallel incoherent interference in the range-Doppler map if a measure of a deviation between the range-resolved signal for the negative half and the positive half is smaller than a predetermined deviation threshold, and a measure of a difference between the range-dependent noise profile and a global noise floor of the range-Doppler map exceeds a predetermined noise threshold.