中波导航数据实时采集与处理系统设计

Design of Real-Time Data Acquisition and Processing System on NDB Navigation

传统的数据采集系统存储容量小、开发难度大,无法满足工程应用中实时性和灵活性的要求。为使处于中频的中波导航信号顺利实现数据实时采集、存储与处理,设计了基于Lab VIEW的中波导航数据实时采集和处理系统。采用队列技术和事件结构进行数据缓冲和控制数据存储,然后对中波导航数据进行频谱分析,提取信号频率、幅度和相位,完成导航参量的测量。结果表明,系统成功实现了中波导航信号的实时数据采集、存储和处理,提高了采集效率,实现了资源共享。该系统已成功用于实验室研究中。

The traditional data acquisition system can＇t meet with the demand of instantaneity and flexibility in the engineering application. In order to get the goal of data real-time acquisitioning, storing and processing, this system takes the queue as a data buffer and controls the data storage by using event structure. Spectrum analyzing was performed in the NDB signals stored and the frequencies, the amplitudes and the phases were also picked up. Thus, the measurement of navigation parameters was finished. As was demonstrated in the results, the integration of data real-time acquisitioning, storing and processing was finished successfully. So the efficiency of data acquisition was improved, and the resource was shared. The system was successfully applied in the lab research.