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MATLAB Recipes for Earth Sciences

运用MATLAB对控制系统进行仿真操作(to use MATLAB simulation and control systems operation)

说明：  用matlab计算二维光子晶体带隙并做出带隙图 以及计算二维声子晶体（XY模）的能隙并作出图(2D Photonic crystal band structure 2D phonic crystal(XY model) band structure)

使用泰勒算法设计的具有抑制旁瓣功能的雷达方向图(Using Taylor algorithm design direction of the radar chart)

本文首先概述了预编码技术的发展历史、基本原理和研究意义。重点介绍了预编码技术在LTE及LTE-A系统中的应用，最后对预编码技术的发展趋势做出预测及综合评论。(This paper outlines the history of pre-coding technology, the basic principles and significance. Focuses on the pre-coding technology in LTE and LTE-A system, and finally to make predictions and comprehensive review on the development trend of the pre-coding technology.)

在matlab环境下，实现一个雷达仿真程序。(in Matlab environment, the realization of a radar simulation.)

Latitude, longitude, altitude to earth ECI position conversion. WGS84 coordinates was used.

等间距线性阵列，阵元间距d= λ /2，等幅加权，目标方位φr = 0°，无噪声。 分别仿真计算阵元数M=8 、16时的阵列方向图，定性分析产生的原因。（可通过3dB波束宽度计算公式说明） (Equally spaced linear array, the array element spacing d = λ/2, equal amplitude weighted target azimuth φr = 0, no noise. , Respectively, the number of array elements M = 8 and 16 when the array pattern, qualitative analysis to produce simulation. (Available by 3dB beamwidth formula noted))

Introducing Mass and Stiffness Matrices Mass elements are introduced based on the 9-strory benchmark FEM model

非对称加密，根据RSA原理，利用matlab编写的代码，能对任何信息进行加密处理(IT CAN )