FM 解调及AFC算法的VHDL设计实现

根据遥测中频PCM/FM信号的解调原理,介绍了FM解调及 自动频率控制（AFC）设计的理论架构和实现方法,通过理论分析、公式推导和Matlab仿真 等手段证明了方法的正确性,在此基础上完成VHDL程序设计,最后进行了仿真测试和实验验 证。仿真结果和实验结果证明了该实现方法的可行性。     

城市轨道交通AFC系统标准读卡器分析

南京地铁Reader_9200_2C系列轨道交通专用读写器是一款针对轨道交通行业的特点,专门研究满足轨道交通行业需求的、交易处理内置型非接触式IC卡读写器。它可用于轨道交通自动售检票系统和票务清分系统中的自动售票机、自动加值机、票房售票机、自动检票机、初始化编码机等设备。     

综述轨道交通地铁自动售检票（AFC）系统运行模式

文章介绍了轨道交通地铁自动售检票（AFC）系统的运行模式,包括系统运行模式、车站运行模式和设备运行模式等。     

Alternative food consumption (AFC): idiocentric and allocentric factors of influence among low socio-economic status (SES) consumers

ABSTRACT

This paper explores the factors that drive consumer demands for alternative food consumption (AFC) options in western society (i.e. plant-based, organic and local diets) as means to achieve sustainability and a state of food well-being. Specifically, we propose a holistic framework in order to identify factors that influence its adoption: idiocentric (functional, ideological and experiential) and allocentric (situational, sociocultural and institutional). The proposed framework provides a basis for discussion on how marketing can contribute to the establishment of AFC in western society and contribute to sustainability and food-well-being among low socio-economic status (SES) consumers. Marketing and public policy implications of this framework are discussed in light of food consumption by low SES consumers, a target particularly vulnerable to flawed states of food well-being.     

一种用于气象雷达的AFC系统

本文根据某型气象雷达的性能要求,提出了一种分频段跟踪的AFC系统方案,有效地解决了大范围跟踪、跟踪精度与接收机镜频抑制之间的矛盾,并且用一个一阶环路模型对系统跟踪误差进行了理论分析,分析结果与工程实践均证明本方案是可行的。