LFM_chirp

书名《大学数学实验 MATLAB应用篇学习》matlab的基础书籍，从数学角度学习maltab，一是matlab的入门，二可以培养学习matlab的兴趣。(The title of )

High Pass Filter code developed using matlab

通信系统仿真 1.FDMA的simulink仿真 2.TDMA的simulink仿真 3.CDMA的simulink仿真 4.三种多址方式比较 (详细要求请见文件内题目描述)(Communication system simulation 1.FDMA simulink simulation 2.TDMA simulink simulation 3.CDMA simulink simulation 4. Comparison of three multiple access (see the detailed requirements described in the document title))

pso算法描述，使用pso优化BP神经网络算法，该代码为基于PSO和BP网络的预测(The PSO algorithm is described, and the BP neural network algorithm is optimized by pso. The code is based on the prediction of PSO and BP network.)

在未知方向发射信号，由接收阵元接收。对接收的信号使用MUSIC算法处理，得到发射信号方位(process the signals received using MUSIC to get the DOA)

说明：   在三次样条中，要寻找三次多项式，以逼近每对数据点间的曲线。在样条术语中，这些数据点称之为断点。因为，两点只能决定一条直线，而在两点间的曲线可用无限多的三次多项式近似。因此，为使结果具有唯一性。在三次样条中，增加了三次多项式的约束条件。通过限定每个三次多项式的一阶和二阶导数，使其在断点处相等，就可以较好地确定所有内部三次多项式。此外，近似多项式通过这些断点的斜率和曲率是连续的。然而，第一个和最后一个三次多项式在第一个和最后一个断点以外，没有伴随多项式。因此必须通过其它方法确定其余的约束。最常用的方法，也是函数spline所采用的方法，就是采用非扭结(not-a-knot)条件。这个条件强迫第一个和第二个三次多项式的三阶导数相等。对最后一个和倒数第二个三次多项式也做同样地处理。 (the Cubic Spline, to find three polynomial, approaching every right to point the data curve. The kind of terms, these data points called breakpoints. Because only two points a straight decisions, and in between the two curves can be used an infinite number of cubic polynomial approximation. Therefore, in order for the outcome of uniqueness. The Cubic Spline, add the cubic polynomial bound by the conditions. By limiting each cubic polynomial of the first order and second-order derivative, it breakpoint in the same Department, we can better identify all internal cubic polynomial. In addition, the polynomial approximation of these breakpoints slope and curvature is continuous. However, the last one and a cubic polynomial in a breakpoint and the final one, not accompanied by polynomials. There)

matlab 读取显示.obj图形文件，在matlab界面中以三维图像形式显示，并将三维坐标信息生成 Excel保存。(Matlab to read display. Obj graphics files,A 3D image display in the matlab interface, and it will generate Excel save three-dimensional coordinate information.)

matlab程序，用于去掉二值图像中的单个像素的像素点，保留图像中较大面积的区域(get rid of single pixels in images)

利用此程序，可以找出二维离散映射henon map的吸引域(With this program, you can find the two-dimensional discrete domain of attraction map henon map)

说明：  matlab在控制系统方面的讲义，供学习参考(matlab lecture notes in control systems for the study reference)