[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$ffVxuxEFphmbHRm-PKHlGeuTGb1izbGOGYG6Q-YdYWHE":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":65},[],"2024-04-13 18:08:35",138166817,[8,9,10,11],"距离","角度","相对速度","位置",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},10,"718cf0bc7f611b6e8d3e20b6e0d94c80","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F8e64175429c25f0ad1983d23747bd169.jpg","智能网联汽车技术概论","66abd7dcedbd4644a47ab255ecd85f4a","3.2.1毫米波雷达的结构与原理","【多选题】毫米波雷达是通过发射和接收毫米波段的电磁波来测量车辆与车辆之间的什么的装置",[21,32,37,46,52,57,62,66,75,84],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],138166811,[25,26,27,28],"长波","短波","微波","红外线","【单选题】毫米波与什么相比,毫米波具有分辨率高、方向性好、抗干扰能力强、检测性能好等特点","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":36,"source":30,"type":31},[],138166812,[25,26,27,28],"【单选题】毫米波与什么相比,毫米波具有大气衰减小、对烟雾的穿透性好、受天气影响小等特点",{"answer":38,"createTime":5,"id":39,"options":40,"question":45,"source":30,"type":31},[],138166813,[41,42,43,44],"天线","收发芯片","信号处理芯片","解码芯片","【单选题】毫米波雷达系统结构,不包括",{"answer":47,"createTime":5,"id":48,"options":49,"question":51,"source":30,"type":31},[],138166814,[8,10,11,50],"方位角","【单选题】测量频率差可以获得目标与雷达之间的什么信息,差频信号频率较低,一般为kHz,因此硬件结构相对简单、易于数据采集并进行数字信号处理",{"answer":53,"createTime":5,"id":54,"options":55,"question":56,"source":30,"type":31},[],138166815,[8,10,11,50],"【单选题】在三角的上升沿和下降沿分别可得到差频 △f1与△f2,根据所得可以求得雷达与目标的什么",{"answer":58,"createTime":5,"id":59,"options":60,"question":61,"source":30,"type":31},[],138166816,[8,10,11,50],"【单选题】雷达具有多个接收天线,目标反射到不同接收天线的信号幅度和相位都有差异,结合接收天线的位置关系,通过分析处理多个接收天线捕获的信号,就可以得到目标的什么",{"answer":63,"createTime":5,"id":6,"options":64,"question":19,"source":30,"type":65},[],[8,9,10,11],1,{"answer":67,"createTime":5,"id":68,"options":69,"question":74,"source":30,"type":65},[],138166818,[70,71,72,73],"探测","识别","跟踪","分辨","【多选题】毫米波雷达检测具有全天候工作的能力,在智能网联汽车领域主要用于目标识别和跟踪",{"answer":76,"createTime":5,"id":77,"options":78,"question":83,"source":30,"type":65},[],138166819,[79,80,81,82],"前碰撞预警(FCW)","实现盲点监测(BSD)","自动泊车辅助(PA)","换道辅助(LCA)","【多选题】24GHz 毫米波雷达主要用于50~70m的中、短程检测,能实现什么功能",{"answer":85,"createTime":5,"id":86,"options":87,"question":90,"source":30,"type":65},[],138166820,[88,79,89,82],"自适应巡航(ACC)","紧急制动(AEB)","【多选题】77GHz毫米波雷达主要用于 100~250m的中、远程检测,能实现什么功能"]