Traditional LIDAR systems can struggle with accuracy, especially when there are reflections from other surfaces. They also have trouble measuring very small changes in distance. This invention solves those problems by using optical frequency combs, which allow for both coarse and fine distance measurements. It reduces errors caused by noise or interference. The result is a much more reliable and precise way to measure distances.
This invention is a new kind of laser radar (LIDAR) that uses two special lasers called femtosecond fiber lasers. One laser sends out a signal, and the other helps detect the signal that bounces back from a target. It combines two types of measurements—time-of-flight and interferometry—to measure distances very accurately. It can measure with precision as fine as 5 nanometers. The system also works well even when there are unwanted reflections.
This technology could be used in self-driving cars for better navigation and obstacle detection. It can help in construction and surveying by providing super-accurate distance measurements. It’s useful in aerospace for docking spacecraft or guiding drones. It could also be used in manufacturing for quality control and precision alignment. Even scientific research labs could use it for experiments that need exact measurements.