Based on the research of video surveillance system's history actuality and trend, thesis complete the research and design of gather subsystem of multimedia digital video surveillance.
基于对视频监控系统的历史、现状和发展趋势的研究，本论文完成了多媒体数字视频监控采集子系统的研究与设计。
Design, construction and verification test is made to complete a multi-frequency excitation source based on FPGA and to complete a digital quadrature demodulator.
完成了基于FPGA平台的多频恒流激励源和数字化正交序列解调模块的设计、构建与实验验证。
Based on the geometry model which had been established, we make sure the choice of the experiment project and complete the experimental equipment design of the digital knife-edge testing.
根据建立的几何模型，确定了实验方案的选择，完成了实验装置设计，建立了数字刀口检测的实验装置。
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