MULTI BEAM TYPE REAR SIDE RADAR USING A MULTI-INPUT MULTI-OUTPUT (MIMO) SIGNAL PROCESSING METHOD, ESPECIALLY FOR CONFIGURING A VIRTUAL ARRAY ANTENNA PATTERN HAVING MXN ANTENNA ELEMENTS

摘要

PURPOSE: A multi beam type rear side radar using a multi-input multi-output (MIMO) signal processing method is provided to simultaneously and precisely detect all rear side areas of rear cross traffic alert (RCTA) areas, rear crash warning (RCW) areas, lane change assist (LCA) areas, and blind spot detection (BSD) areas.;CONSTITUTION: Transmission antennas (110,111) transmit transmission signals for the detection of a target. Receiving antennas (120a-120d) receive signals reflected to the target. A multiplexer (210) respectively multiplexes the receiving signals of a quadrature-phase receiving channel and the receiving signals of an in-phase receiving channel in respect to the signals received through the receiving antenna. An analog/digital converter (220) converts an analog receiving signal, output from the multiplexer, into a digital receiving signal. A digital signal processor (230) configures a virtual array antenna pattern having MxN antenna elements through a multi-input multi-output (MIMO) signal processing method for the digital receiving signal. Through the virtual array antenna pattern, the digital signal processor forms a first receiving beam covering a rear-side blind spot detection (BSD) area, a second receiving beam covering a lane change assist (LCA) area, a third receiving beam covering a rear cross traffic alert (RCTA) area, and a fourth receiving beam covering a rear crash warning (RCW) area.;COPYRIGHT KIPO 2013;[Reference numerals] (100) Superhigh frequency module; (130) Transmission signal processing unit; (140a,140b,140c,140d) Reception signal processing unit; (200) Signal processing module; (210) Multiplexer; (220) AD converter; (AA) Tx control; (BB) Rx control; (CC) Correction; (DD) CFAR detection; (EE) Angle calculation