matlab_dar_mohasebat445758568573427567

为感谢惠俊英老师的谆谆教诲，特为好奇诸君奉上水声物理--海洋传播声场模拟的一份武林秘籍！ 当好奇诸君阅毕此卷，再对照轻松跑完六份作业（六路招式），即入“水声物理”之江湖！ BELLHOP与AcousticsToolbox遵照GNU公共许可证进行分发。感谢Michael B. Porter对BELLHOP的原创，也感谢Orlando Camargo Rodríguez此份大道至简的入门秘籍。更感谢由Free Software凝聚起来的自由科学家社区。(Bellhop is a highly efficient ray tracing program, written in Fortran by Michael Porter as part of the Acoustic Toolbox (available at the website of the Ocean Acoustic Library). Bellhop is designed in order to perform two-dimensional acoustic ray tracing for a given sound speed profile c(z) or a given sound speed field c(r; z), in ocean waveguides with flat or variable absorbing boundaries. Output options include ray coordinates, travel time, amplitude, eigenrays, acoustic pressure or transmission loss (either coherent, incoherent or semi-coherent).)

根据系统传递函数求系统时域性能指标，输入为阶跃信号(Transfer function evaluation system according to the system performance in time domain, the input step signal)

MATLAB串行通信的实现方法 挺实用的(MATLAB and serial communication)

说明：  newton raphson matlab code

分别使用矩形窗和汉明窗函数设计一个线性相位FIR低通滤波器，使其逼近理想低通滤波器的频率特性。采用频率抽样法设计FIR数字低通滤波器滤波器。(Using rectangular window and hamming window function to design a linear phase FIR low-pass filter, the frequency characteristics of the ideal low-pass filter. Frequency sampling method is used to design FIR digital filter based on low-pass filter.)

粒子势垒隧穿算法，与退火原理基本一样，这是解决旅行商问题的源代码。(Particle tunneling barrier algorithm, and annealing the same basic principle, which is to solve the traveling salesman problem' s source code.)

NUMERICAL DIFFERENCE APPROXIMATION based on Taylor s expansion---the program give the finite difference coefficient for any number of discrete point. also with that u can differentiate of any function in any order with high accuracy. also u can use it to develop a general finite difference program.

This programe provides SER analysis of amplify and forward cooperative protocol using QPSK modulation. Results are compared with theoratical results for QPSK modulation with AWGN and Rayleigh fading channels

计算结构动力反应的NEWMARK方法，计算结构动力反应的NEWMARK方法(Calculation of structural dynamic response NEWMARK method in calculating the structural dynamic response method NEWMARK)

空时编码的一个matlab实现源程序，适合初学者。(Space-time coding to achieve a matlab source code, suitable for beginners.)