What can laser strapdown inertial navigation system do and what is its use? Who can say it in a popular way!

It is actually a navigation system. It is very important to determine your position on the battlefield, especially in the absence of any other external manifestations and clues. This requires starting from a known starting point and knowing where you are by tracking and calculating your every displacement. This is the ancient but indispensable inertial navigation. In the past, due to the limitation of technology, it was difficult to measure its own displacement and calculate navigation accurately. Using laser strapdown inertial navigation system, various platforms can accurately measure and calculate their own displacement in real time, thus achieving accurate navigation.