"Electronic fence", "UAV cloud system" and "detection and countermeasure" are three important technical means of UAV surveillance. In general, the regular…
From the north seeking measurement principle, the inclinometer can use liquid floated gyroscope, DTG, electrostatic gyroscope, ring laser gyroscope, optical fiber gyroscope gyro…
Fiber optic gyroscope north finder is used to quickly determine independent the true north direction. Angular velocity of rotation of the earth is obtained by…