分析了中国数字电视地面广播标准中的系统帧结构，并根据信号帧头的循环特性，提出了一种性能较好的信道估计算法；
The frame structure in Chinese DTTB standard is introduced, and a channel estimation algorithm with a better performance is given according to the cycle characteristics of the signal frame head.
文中详细介绍了时空域离散信号处理的理论计算公式和处理系统结构，对风速测量结果进行了分析和比较。
The theoretical formulas of discrete signal processing and circuit structure in the system are described, and results of wind-speed measurement are analyzed and compared.
主要介绍庞巴迪公司的EBI950计算机联锁系统基本组成，为国内信号专业人士了解国外信号系统结构提供参考。
This paper introduces the basic composition of Bombardier's EBI950 computer-based interlocking system, which can offer reference of signal system architecture for the researchers abroad and domestic.
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