Driving Dynamics Of A Vehicle-mounted Radar System Research

It was a long development cycle, expensive experiment cost, single method in conventional radar design. It was required that the radar should have a rapid mobility and high responsiveness in modern information war. Some critical parts of the radar antennas were destroyed under the different kinds of wind load when the vehicle radar system was running. Also, the paradox between rigid strength and mass was presented challenge. The virtual prototype technology was introduced to simulate the environment effectively to get the dynamic parametres in which the vehicle radar antenna was running, then it was analyzed so that it can provide reference to improve the structure layout and optimize the structure design.The 3D model which was based on some radar system has been built in the paper; Based on the multi-body system theories, the system coupled with the rigid bodies and elastic bodies has been built in which the antenna reflector surface was considered as flexible body; Eight kinds of road spectrum were made according to military standards, the tire model was created; The steady wind load which was obtained from wind tunnel test has been applied to simulate the process of dynamic vehicle, the dynamic parameters of some important parts and the limited wind load which the radar system would be born in different types of road spectrum have been acquired. The rigid-flexible coupling system while the radar system was working has been built according to different conditions, the stress situations of radar antenna with different speeds was studied and the dynamic parameters were got; The modal analysis and thickness optimization in radar antenna reflector were carried out, compared to different conditions, the optimal thickness has been accepted, the paradox between rigid strength and mass was resolved, the optimal proposal was given, it can provide the theoretical basis and reference experiences for the further development of new types of radar design.