Research On Data Transmission Method Of Unmanned Surface Vehicle Based On Video Stream

With the quick development of the communication technology,multimedia technology and computer technology, people don't satisfy with wireless communication just affords audio service. The video communication becomes a new demand of wireless communication business. The mightiness information of video communication makes the design of the wireless video communication become inevitable trend. When the unmanned surface vehicle (USV)navigating at high speed, how to get the real time video data,radar data,control data and some other related data ,then dispose and translate these data at real time ,and make sure the security and the secrecy of these information during the transmitting ,become one of the difficulties and vital part during the unmanned vehicle design phase.Considering this point , this dissertation studied the data multi-channel transmitting method based on the video stream, and designed a video capturing,compressing and transmitting system. The specific works are as follows:Firstly, the dissertation analyzed the actuality and related technology of the real time video transmitting, did a deep research on the basic frame and the optional encoding mode of the H.263 encoding standard.Secondly, the dissertation put forward the principle of the data multi- channel transmitting, and illuminated the process of the data disposal of the Server and Client end.Thirdly, we analyzed the development and related technologies of the video information hiding and video watermark. The paper had accomplished the information encrypting and hiding in the compressed video stream. At the receiving end, the information can be deciphered and extracted entirely.Fourthly, this dissertation designed the scheme of the video transmitting system, chose the structure of the specific video transmitting system and the style of the video capturing,encoding and the protocol of transmitting.Fifthly, the dissertation accomplished the implementation of the entirely video system. In the process of capturing, we used the USB interface camera as the hardware base, and this system was accomplished by the VFW kit. During the process of encoding, we chose the H.263 standard to accomplish the video compress and decompress. During the process of transmitting, we chose the UDP protocol and accomplished the multi-channel transmitting function.