Perseverance rover surpasses Opportunity's driving distance, setting a new historical record
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On October 11, the Perseverance rover's odometer reading reached 28.10 miles (45.22 kilometers), surpassing the record of 28.06 miles (45.16 kilometers) held by Opportunity and becoming the probe with the longest driving distance on the surface of an extraterrestrial body. Opportunity took nearly 15 years to cover that distance, while Perseverance took only five and a half years; more than 90% of its driving distance was completed relying on the AutoNav autonomous navigation system, and it can advance up to 1,351 feet (412 meters) in a single Martian day.
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毅力号火星车创下新的世界纪录——它在地外天体表面的行驶里程，超过了此前所有探测器。10月11日，它的里程表读数达到28.10英里（45.22公里），超越了此前由机遇号保持的28.06英里（45.16公里）纪录。机遇号于2004至2018年间在火星开展探测。机遇号耗费近15年才跑完该里程，而毅力号仅用时5年半。这一里程碑事件发生在它的第2006个火星日。毅力号能长途行进，一大核心原因是搭载了先进的自主行驶系统。这套系统名为 AutoNav。依靠它火星车大多时候不需要等待地球发来详细行驶指令，就能自主在火星地表认路。行进过程中，毅力号持续拍摄周边影像，绘制包含障碍物信息的三维地图，在地面操控人员选定的目的地之间自行规划安全路线。该系统可以让火星车以接近最高速度行驶，单个火星日最多可前进1351英尺（412米）。毅力号超过90%的行驶里程都依靠AutoNav自主评估地形。与之对比，机遇号及其孪生探测器勇气号早期自主导航系统，仅能自主评估约5%的行驶路段。