Abstract
In this thesis, I designed a quadrotor system structure and implemented several quadrotor platform based on this design. On this quadrotor system, I realized a quadrotor attitude controller, velocity controller and position controller. The quadrotor system and its controller were used to develop different quadrotor autonomous flight technologies, including vision-based target position estimation and GPS-based trajectory following. With these technologies as building blocks, I constructed two quadrotor autonomous applications, namely precise autonomous landing and complex trajectory following and control. Both applications were successfully proved by simulation experiments and real implementations.