Multibeam-Sonar-Reverberation

test, this is only to learn ow to start.

对于雷诺方程的求解和绘制滑动轴承的压力分布图，自带测试数据，点击可运行(a kind of solution of reynolds equation and the picture of pressure )

说明：  MATLAB实用教程（第2版）实例源代码程序EXE0705(MATLAB Practical Guide (2nd Edition) examples source code program EXE0705)

QPSK的调制解调，跟书上的框图基本如出一辙，希望对大家有帮助。(QPSK modulation and demodulation, the basic block diagram of the book with the same, we want to help.)

由设计要求可知，wp<=0.2π，允许误差幅度小于1dB，ws>=0.3π内衰减应大于15dB。为了验证数字滤波器的实际滤波功能，设计程序时，把输入序列定为验证函数x（t）=4sin（100πt）以及x（t）=4sin（200πt）和x（t）=4sin（400πt）。又因为Ts=1.25ms，T=80ms，故采样点为64，即N=64，所以当M=6，可以同时调试并验证程序的滤波功能。(Seen by the design requirements, wp < = 0.2π, allow a margin of error of less than 1dB, ws> = 0.3π within attenuation greater than 15dB. In order to verify the actual filtering function of the digital filter design program, the input sequence as validation function x (t) = 4sin (100πt) and x (t) = 4sin (200πt) and x (t) = 4sin (400πt) . And because Ts = 1.25ms, T = 80ms, so the sampling points is 64, that is N = 64, so when M = 6, can debug and validate filtering program.)

属于真实气体状态方程，可用于计算气体温度、压力和密度。(Calculate physical parameters of a gas, such as pressure, density, and temperature)

MATLAB中提供了汉明码的编解码、4FSK调制解调函数和不同通信信道模型函数，本程序直接调用进行编程。借助于MATLAB可大大地拓宽研究分析的视野提高研究设计的效率,具有重要的推广和应用价值。 (MATLAB provides the hamming codec 4FSK modem function and different communication channel model function, the program calls directly programming. Help of MATLAB can greatly broaden the horizons of research and analysis to improve the efficiency of the study design, with promotion and application value.)

说明：  在MATLAB中表示信号的常规格式是向量或者矩阵。本示例中利用randint 函数来产生一个表示二进制数据序列连续值的列向量。其中二进制数据序列的长度（即为列向量中的行数）设置为30,000。 下面的代码同时还绘制了数据序列的杆图（stem plot），用来显示数据的0、1值。你所产生的图可能与次示例中的图有一点不一样，这是因为本示例中应用了随机数。 (Said signal in MATLAB conventional format is a vector or matrix. In this example use randint function to generate a column vector of a sequence of binary data, said successive values. Wherein the length of the binary data sequence (i.e., the number of rows in the column vector) is set to 30,000. The following code sequence of data is also plotted in Fig rod (stem plot), the value 0 is used to display the data. You may have generated the second example of FIG FIG little different, this is because the present example, the application of the random number.)

此文件夹为七单元线阵的波达方向（music罚法）估计程序，包含不加平滑的估计程序和加上前向平滑的估计程序。程序中每部分都有详细的中文注释，非常容易理解，特别适合于初学者。是本人学习波达方向估计时的心得，希望对大家有帮助。(This folder linear array of seven units of DOA (music Penalty Act) estimation procedures, including without smoothing estimation procedures and smooth with the forward estimates process. Each part of the program are detailed notes in Chinese, is very easy to understand, especially for beginners. DOA estimation is when I am learning experiences, we want to help.)

matlab写的实用的chan 算法，在tdoa中(chan matlab write practical algorithm in tdoa)