Application of Wavelets Transform in Rotorcraft UAV’s Integrated Navigation System
Lei Dai, Juntong Qi, Chong Wu, Han Jianda · InTech eBooks · 2012
In low cost and small size integrated navigation system, MEMS (Micro Electronic Mechanical System) inertial sensors are used widely.But MEMS inertial sensors, especially MEMS gyroscopes have large noise.It affects the calculation accuracy of angle rotation matrix, and will further affect calculation accuracy of other navigation data such as position, velocity, and angular velocity.In order to improve the calculation precision of position and angle, digital filter is required to reduce the noise of gyroscope.Commonly, we used www.intechopen.