But the capture processes of digital video introduce noises unavoidably 在视频采集过程中,噪声信号的引入是不可避免的。
During the automatic data capture process , the epc number is read by an rfid reader via electromagnetic waves and the number is passed on to the epc middleware 在自动数据收集过程中,射频识别阅读机通过无线电波读取电子产品码编号后,将数据传输至电子产品码中介软件。
During the automatic data capture process , the epc number is read by an rfid reader via electromagnetic waves and the number is passed on to the epc middleware 在自动数据收集过程中,射频识别阅读机通过无线电波读取电子产品码编号后,将数据传输至电子产品码中介软件。
Wide doppler range . varied code length , varied code rate , which have more difficulties . little acquisition time and high acquisition probability are required during the capturing process of spread spectrum signals 对高动态、高码率、低信噪比、大多普勒及变化的码长和码率的扩频信号的快捕是本文的难点。