Communication in a slow?at Rayleigh fading channel with AWGN is not reliable as the channel frequently enters into deep fades, (i.e., the channel attenuation is large). More speci?cally, as seen in class, Rayleigh fading converts an exponential depe
Wireless Sensor Network security localization technologies are usually designed just for one type of attack or single step transmission for the message packets, which would be less robust in complex network environment. In this paper, we propose a n
Nate Robin编写了一套教学程序，用于演示OpenGL编程的基本概念。它允许用户修改函数的参数，以交互的方式观察它们的效果，这套教程所涵盖的主题包括变换、光照、雾和纹理。这些教程具有直观效果，且可以改变参数来从两个角度看到对比效果，而且具有可移植性，并使用了GLUT。 以下是作者本人对各个例子的说明： The fog tutorial program (shown at right) demonstrates how to use depth cueing (or fog) in Ope
Principles of Planar Near-Field Antenna Measurements 介绍天线近场测量的基础知识 Contents Preface xi 1 Introduction 1 1.1 The phenomena of antenna coupling 1 1.2 Characterisation via the measurement process 4 1.2.1 Free space radiation pattern 6 1.2.2 Polarisatio
Table of Contents Foreword..............................................................................................................xvii Preface.....................................................................................................
Preface xv Introduction xvii Mathematical Notation xix Pseudo-Code xxi Contributors xxvi 1 2D GEOMETRY Useful 2D Geometry 3 Trigonometry Summary 12 Useful Trigonometry 13 Trigonometric Functions at Select Points 18 Triangles 20 Generating Random Poi
A model for the temperature sensitivity of radiation-induced attenuation (RIA) is investigated. The RIA spectra in a germanium (Ge) and phosphorous (P) co-doped fiber ranging from 825 to 1600 nm at different temperatures are measured and decomposed a
Image stabilizer is important for most unmanned helicopter system. Usually it should be able to drive the video sensor to track some targets precisely under heavy vibration due to the high speed rotation of the rotor. This is the so-called simultaneo
The noise origin of attenuation system is explored by analyzing the wedged plate attenuator based on Fresnel transmission through two pairs of wedged plates. Multiple reflections between two surfaces of a pair of wedged plates introduce fluctuating e
A new method to determine the radial distribution of attenuation in single-mode optical fibers is proposed. As an example, radiation-induced losses in gamma-irradiated germanosilicate fibers are characterized at 633 nm.
We investigate the temperature dependence of radiation-induced attenuation (RIA) at 1 310 nm for a Ge/P co-doped fiber after a steady-state \gamma -ray irradiation. A irradiation facility 60Co source is used to irradiate the fiber at a dose rate of
A compact variable optical attenuator, covering C and L bands with over 50 dB attenuation range, is realized using a single liquid crystal cell with a tilted fused silica coating compensating the cell's small residual birefringence.
A bandwidth-tunable optical passband filter with tunable attenuation is proposed. The filter, composed of a transmission liquid crystal array and high-resolution diffraction grating, was successfully demonstrated based on the compact spatial light de
