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现阶段,卫星电视接收设备的兼容性相对薄弱,特别是在中低端轿车车载前装市场中。所以,下文将以中国移动多媒体广播技术(简称为CMMB技术)为重要基础,合理地设计车载卫星接收系统。综合考虑车载前装性的要求,设计了主从模块,并且构建CMMB模块硬件接口电路,可以把所接收的卫星信号有效地转化为CVBS信号。此外,对其他相关问题展开了研究与分析,通过对该车载卫星接收系统的实际应用,效果理想,所以在车载前装市场中十分适用。
At this stage, satellite TV receiving equipment compatibility is relatively weak, especially in the car market in the low-end car front loading. Therefore, the following will be based on China Mobile Multimedia Broadcasting Technology (referred to as CMMB technology) as an important basis for the rational design of vehicle satellite receiving system. Considering the requirements of vehicle front-loading, the master-slave module is designed, and the hardware interface circuit of CMMB module is constructed, which can effectively convert the received satellite signal into CVBS signal. In addition, the research and analysis on other related issues are carried out. The practical application of the car satellite receiving system has achieved good results and is therefore very suitable for the on-vehicle front-loading market.