They could use UWB positioning systems. Accuracy is still not the best, but power consumption is very low and range more than adequate for a small base camp lik

They could use UWB positioning systems. Accuracy is still not the best, but power consumption is very low and range more than adequate for a small base camp like the landing area. Solar power alone should be enough to power each beacon during Mars' daytime. https://www.firaconsortium.org/discover/how-uwb-works https://www.firaconsortium.org/discover/how-uwb-works