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Okamura
- 该模型是基于实地测量的即以准平坦地形、大城市市区的中值场强或路径损耗作为参考,对其他传播环境和地形条件等因素分别以校正因子的形式进行修正,用来预测地面移动系统信号的强度。其频率适用范围是150MHz到1000MHz的UHF/VHF频带。目前使用的主要频段资源为800~900MHz。这一频段,在相对平坦区域,一般可应用Okumura-Hata传播模型。Hata提供了对这些数据的解析逼近,并捕捉到大部分的主要影响-The model is based on field measurements of
Untitled3
- The purpose of this chapter is to familiarize the reader with the basic propagation characteristics that describe various wireless communication channels, such as terrestrial, atmospheric, and ionospheric for VHF to the X-band. Well-known stand
GDFT
- 该程序基于开源项目,是一种快速样条分形变化的算法,用于通过频域采样数据对图像进行伪作色还原,对提高甚高频扫描隧道显微技术成像质量有着非常重要的意义。-The program is based on the open source project, a fast-spline fractal algorithm change for pseudo-pornographic images by the frequency-domain sampling data restore quality of