A Ukrainian drone tech firm has unveiled an alternative to GPS navigation. Sine.Engineering built the system to counter Russia’s electronic warfare, which has wreaked havoc on GPS signals. To dodge the interference, Sine invented a satellite-free replacement. The approach is inspired by time-of-flight (ToF) methods, which began tracking aircraft long before the advent of GPS. Unlike GPS, ToF systems don’t rely on satellites. Instead, they measure the time it takes a signal to between a transmitter and a target. In Sine’s framework, the calculations come from a communication module for drones. Smaller than a playing card, the module shares signals with a…
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