Source: Blog – Hackaday
Adding retroreflector arrays to GPS satellites enables ground-based laser ranging to validate and correct orbital data in real time, closing the feedback loop between space infrastructure and Earth observation. This represents a shift from passive positioning systems toward actively calibrated ones—a pattern we’re seeing across critical infrastructure where centimeter-level accuracy increasingly enables autonomous systems, autonomous vehicles, and precision agriculture at scale. As commercial space traffic and terrestrial positioning demands intensify, making satellites themselves more verifiable and accurate becomes a foundational requirement, not a luxury enhancement.