NASA“毅力号”火星车在火星表面的累计行驶距离达到45.22公里(约28.10英里),这一成就于2026年10月11日(火星日Sol 2006)达成,正式打破了人类在地外天体上行驶的最远纪录 1。事实上,早在近两个月前的火星日Sol 1947,该探测器距离里程碑仅剩约200米,但为了执行岩石研磨及邻近科学任务,团队选择推迟了最终突破的时刻 1。
为支撑此次长距离自主导航并适应复杂地形,工程团队对驾驶指南进行了关键更新,将火星车的倾斜极限提升至24度,同时将底盘下方的间隙要求放宽至20厘米(约7.9英寸) 1。此外,一种名为“板载全局定位”(GBLC)的新型自主功能被引入,该技术复用“机智号”直升机基站内部的高速商业处理器进行图像比对定位 1。针对火星表面辐射环境可能引发的内存“瞬态位翻转”问题,团队还开发了基于软件的抗辐射加固方法以及动态滑移模型,以增强火星车长距离自主导航能力 1。
NASA’s Perseverance rover has set a new record for the longest drive on another world, reaching a total mileage of 45.22 kilometers (28.10 miles) 1. This milestone was achieved on Sol 2006, corresponding to October 11, 2026 1. Although the rover had been within approximately 200 meters of the record as early as Sol 1947, nearly two months prior, the final break was delayed while the team executed rock grinding and other nearby scientific tasks 1.
To enable this extended range across complex terrain, mission engineers updated driving guidelines, raising the rover's tilt limit to 24 degrees and reducing the required clearance beneath its chassis to 20 centimeters (about 7.9 inches) 1. They also deployed a new autonomous positioning technique called "Onboard Global Localization" (GBLC), which utilizes high-speed commercial processors from the Ingenuity Helicopter Base Station to perform image-comparison localization 1.
The team further enhanced the rover's long-distance navigation capabilities through software innovations designed for the Martian environment 1. These included software-based radiation hardening methods to counteract transient bit flips in memory caused by surface radiation, as well as dynamic slip models 1.
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