Four-dimensional information high-precision detection automobile forward anti-collision radar

Abstract

The invention discloses a four-dimensional information high-precision detection automobile forward anti-collision radar. The radar system is mainly composed of an MIMO radio frequency subsystem, a signal processing subsystem, a wave-transparent cover and an airtight grade structure. The MIMO radio frequency subsystem provides longitudinal / transverse high-resolution capability and pitching angle measurement capability for the radar system; the signal processing subsystem provides real-time signal processor capability for the radar system, the wave-transparent cover provides safety protection performance and efficient wave-transparent performance for the radar system, and the airtight structure provides a high-reliability operation environment for the radar system. The vehicle-mounted millimeter wave radar senses the running environment of the vehicle and provides obstacle avoidance information according to the sensed vehicle pose, road and obstacle information so that invalid braking caused by excessive false alarms is greatly reduced, and the maneuvering efficiency of the intelligent vehicle is improved.

Description

technical field [0001] The invention belongs to the technical field of automobile radar, in particular to a four-dimensional information high-precision detection automobile forward collision avoidance radar. Background technique [0002] In the Advanced Driver Assistance System ADAS (Advanced Driver Assistance System), through the method of multi-sensor fusion, eight application problems in the process of car driving are solved, namely, blind spot detection, parking assistance, lane departure warning, collision prevention, and road suitability. Eight applications include light control, night vision, active vehicle distance control cruise, and driver physiological state monitoring. Automotive forward collision avoidance radar plays a particularly important role, while the traditional vehicle-mounted millimeter-wave radar antenna array receiving antenna can only measure the angle of the target in the horizontal direction, but cannot measure the angle of the target in the pitch...

AI Technical Summary

Problems solved by technology

Automotive forward collision avoidance radar plays a particularly important role in it, while the traditional vehicle-mounted millimeter-wave radar antenna array receiving antenna can only measure the angle of the target in the horizontal direction, but cannot measure the angle of the target in the pitch direction.

In view of the fact that passenger smart vehicles will face various terrains and vegetation during the actual mission execution (such as viaducts, height limit beams, tunnels, etc. in urban environments), if the radar cannot distinguish the angle of the target in the pitch direction, it cannot judge the obstacles ahead Whether the object height is lower or higher than the vehicle height, resulting in ineffective braking caused by too many false alarms

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