The cylinder itself contains a small digital camera, a radio transmitter, an induction-powered charging device to provide electricity and an "orientation actuator".
圆柱体本身含有一个微型数码摄像头，一个无线电发射器，一个感应动力的发电装置，以及一个方位驱动器。
2
The operation principle of marine navigation radar is deeply analyzed in this project, including the basic principle of radio, impulse radar and radio-range orientation.