Strapdown inertial navigation system

Depending on the gyro’s different, strapdown inertial navigation system (SINS) is divided into two classes: one use the rate gyroscope, such as single degree freedom flexible gyroscope, laser gyroscope etc., they are measuring aircraft angular velocity. This system is called rate of strapdown inertial navigation system; Another kind of double freedom gyro, such as electrostatic gyroscope, it measures the angular displacement of aircraft. This system is called position type strapdown inertial navigation system. Refers to the rate of strapdown inertial navigation system, it is also called strapdown inertial navigation system.