According to a NASA blog post written by Vandi Verma, Chief Engineer for Robotic Operations at NASA’s Jet Propulsion Laboratory, the record was set after the rover spent two months conducting detailed science in a scientifically rich area, executing short drives for rock abrasions and proximity analysis. Once the science was complete, Perseverance sailed past the record, which earned its engineering twin on Earth a plaque from Guinness World Records.
To reach this distance, the Perseverance team had to overcome challenging terrain including dense boulder fields and steep slopes. The team raised the rover's tilt limit to 24 degrees, reduced the required clearance under its belly pan to 20 centimeters (about 7.9 inches), updated braking software, nearly doubled steer motor current limits, and introduced dynamic slip tables to model expected wheel slip. They also implemented cross-slope driving to better anchor wheels on exposed bedrock.
One of the most significant upgrades is a new autonomous drive capability called onboard Global Localization (GBLC). This capability repurposes the high-speed commercial processor from the Ingenuity Helicopter Base Station to compare ground and orbital imagery, allowing the rover to locate itself in global coordinates at the end of a drive, effectively providing a GPS-like function on Mars without a global positioning system. The processor is not hardened against Martian radiation, so the team developed a software-based approach to radiation hardening to handle transient bit flips.
Looking ahead, the team is exploring the use of generative SI to help plan longer strategic drives with fewer resources. As Perseverance climbs higher along the crater rim, the team is applying hard-won lessons from 45 kilometers of driving to reinvent how the rover traverses the Martian surface, promising further leaps in autonomous exploration.
