基于SystemVue汽车雷达系统研究

Research of Automobile Radar System based on SystemVue

摘要:

针对毫米波雷达射频、信号处理以及超分辨测角问题，提出了一种基于SystemVue进行汽车雷达系统设计和信号处理算法设计的方法。首先，利用SystemVue自带的射频库和通用算法库进行雷达系统设计，真实模拟了毫米波射频、天线及目标环境的相互影响；其次，针对快调频的FMCW信号波形，给出了完整的汽车雷达目标距离、速度和角度的信息处理算法流程；最后，针对汽车雷达系统测角精度较低的问题，提出了基于酉变换MUSIC的测角算法，大大降低了汽车雷达超分辨求角的运算量。仿真结果表明，该方法解决了汽车雷达的链路设计、射频指标对雷达信号处理性能影响的评估问题，更真实、更全面地反映了汽车雷达系统的性能，为雷达系统的研究提供了有力依据。

Abstract:

For the problem of millimeter-wave radar RF , signal processing and super-resolution angle measurement ,a method based on SystemVue for designing automotive radar system and signal processing algorithm is proposed. First,based on SystemVue, this paper researchs the automotive radar system, and uses SystemVue''s own RF library and general algorithm library to design radar system. It truly simulates the interaction of millimeter-wave RF, antenna and target environment. Secondly,for the fast FM FMCW signal waveform, a complete flow of information processing algorithm for target distance, speed and angle of automobile radar is presented. Last,in order to solve the problem of small number of reception units in automotive radar system, an improved angle measurement algorithm based on MUSIC is proposed, which greatly reduced the operation amounts of super-resolution angle measurement.The simulation results show that this method can solve the problem of the link design of the automotive radar and the performance influence evaluation of the radio frequency index on the radar signal processing.It reflects the performance of the automotive radar system more realistically and comprehensively, and provides a powerful basis for the research of radar system.