摘要
为分析乘用车近场雷达散射截面特性以及内部机理,该文基于目标电磁散射理论,考虑乘用车的RCS受探测距离以及姿态角的变化所影响,使用77 GHz车载毫米波雷达利用定标体采取对比定标法测量某掀背式乘用车近场条件下不同距离的雷达散射截面以及不同角度的雷达散射截面。分析得到,乘用车尾部距毫米波雷达3~30 m的RCS大致呈上升趋势,约在30 m处其RCS趋于稳定,认为该车在距77 GHz毫米波雷达30 m处的近场RCS具有代表性。不同姿态角下乘用车的RCS总体范围为-3~24 dBsm。在该车的侧面(90°)达到峰值,为24 dBsm,其他两处RCS稍弱的峰值对应于汽车的车尾(180°)和车头(0°)处,汽车的斜角(60°和120°附近)处其RCS最小。
In order to analyze the scattering cross-section characteristics and internal mechanism of the near-field radar of passenger vehicles,this paper is based on the target electromagnetic scattering theory,considering that the RCS of passenger vehicles is affected by the changes of detection distance and attitude angle,and uses 77 GHz vehicle-mounted millimeter-wave radar to use the calibration body to take it.The comparative calibration method is used to measure the radar cross section of a hatchback passenger car at different distances and at different angles under the near-field conditions.The analysis shows that the RCS of the passenger car at a distance of 3~30 m from the millimeter-wave radar generally shows an upward trend,and the RCS tends to be stable at about 30m.It is considered that the near-field RCS of the car at a distance of 30m from the 77 GHz millimeter-wave radar is representative.The overall range of the RCS of the passenger car at different attitude angles is-3~24 dBsm.It peaks at 24dBsm on the side of the car(90 degree),the other two slightly weaker RCS peaks correspond to the rear of the car(180 degree)and the front(0 degree),and the car's oblique angles(near 60 degree and 120 degree)where RCS is minimal.
作者
仝令胜
刘伟
冯涛
贾国强
TONG Lingsheng;LIU Wei;FENG Tao;JIA Guoqiang(China Quality Certification Center,Beijing 100070,China)
出处
《中国测试》
CAS
北大核心
2023年第S01期201-204,共4页
China Measurement & Test
基金
国家重点研发计划(2021YFF0602700)
关键词
掀背式乘用车
雷达散射截面
电磁近场
毫米波雷达
hatchback
radar cross section
electromagnetic near-field
millimeter wave-radar
