Multi-modal detection radar device

The invention provides a multi-mode detection radar device which comprises a central processing module and an antenna module arranged in the central area of the tail end of a vehicle, the central processing module comprises a moving direction judging and switching unit, and the moving direction judging and switching unit has a low-distance analysis mode and a high-distance analysis mode; the antenna module is electrically connected with the central processing module, the moving direction judgment switching unit detects the advancing direction state of the vehicle, and when the vehicle is in an advancing state, the antenna module is made to be suitable for a low-distance analysis mode; when the vehicle is in a reverse state, the antenna module is adapted to a high-distance resolution mode. According to the invention, the antenna module is suitable for different distance analysis modes during driving blind spot detection (BSD) and reversing radar detection so as to meet the purposes and requirements under diffe