The independent direction is a key technology for large scale equipments of photoelectric tracking and inertial navigation.In order to satisfy the demand of fast high precision independence north-seeking,the accelerometer dynamic northseeking(also by the name of non-gyroscopic north-seeking) system based on Coriolis effect was lucubrated.According to the working principle of accelerometer north-seeking and project practicality of north instrument,the vertical angular velocity turntable scheme was devised.Th...