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自动驾驶汽车是如何准确定位的?
为提升精度,自动驾驶往往采用差分GNSS(DGNSS)或实时动态改正(RTK)技术,通过基准站网络向车载GNSS接收机发送改正信息,将定位精度提升到10厘米以内。即便如此,在城市峡谷或隧道等GNSS弱覆盖区域,GNSS定位还会出现信号中断或精度骤降,需要依赖其他 ...
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