光学镜头基础知识及测试
光学镜头基础知识,CCD&CMOS性能对比,相机成像质量主要评测参数,测试卡,图像分析软件,实验方法,干涉衍射三原色散射几种现象
光学镜头基础知识,CCD&CMOS性能对比,相机成像质量主要评测参数,测试卡,图像分析软件,实验方法,干涉衍射三原色散射几种现象
This volume consists of detailed articles written by leading engineers for readers who wish to learn about the basic technologies, systems, networks, services and operations of W-CDMA in a systematic manner. We hope that it will help deepen your interest in, and understanding of, mobile communication technologies.
TD-SCDMA 系统全面满足IMT-2000 的基本要求。采用不需配对频率的TDD(时分双 工)工作方式,以及FDMA/TDMA/CDMA 相结合的多址接入方式。同时使用1.28Mcps 的低 码片速率,扩频带宽为1.6MHz。 TD-SCDMA 系统还采用了智能天线、联合检测、同步CDMA、接力切换及自适应功率控 5 制等诸多先进技术,与其它3G 系统相比具有较为明显的优势