针对车载天线伺服系统技术，提出了采用扩展局域控制网（CAN）通信协议的数据传输技术，分析了车载天线安装时带来的安装偏差角，提出了一种安装偏差角标定技术。介绍了扩展CAN通信协议的帧格式及其在车载天线伺服系统中的应用，给出了通信流程；分析了天线坐标系和车体坐标系之间的坐标变换，导出了安装偏差角标定的公式，给出了实测结果。%A data transmission technology based on extended Controller Area Network （CAN） communication is introduced for vehicular antenna servo system. Offset angle in mounting the vehicular antenna is analyzed and a mount offset angle technology is proposed. The frame format and application in vehicular antenna servo system of extended CAN communication is introduced. And communication flows is listed. Then the transformation of antenna coordinate system and vehicle coordinate system is analyzed, the formula is concluded.and test results are presented.
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