NS-FDM

matlab code for inertial navigation

一种好的数学优化算法，可以既快又好的求得局部最优值。(A good mathematical optimization algorithms, can be fast and achieve good local optimum value.)

实现了二维结构的拓扑优化设计，并且对程序的每一步进行了详细的解释和说明，对于拓扑优化的初学者来说，很有帮助(The topology optimization design of two-dimensional structure is realized, and every step of the program is explained and explained in detail, which is very helpful for beginners of topology optimization.)

形象展示粒子滤波过程的代码，与扩展卡尔曼滤波进行比较，部分代码含注释，易于理解(Image display code particle filter process, compared with the extended Kalman filter, part of the code with comments, easy to understand)

this program helps you to perform signal modeling for AR, MA and ARMA signals

导航初对准程序，在接连导航技术中方便进行姿态更新计算(Align the beginning of the navigation program, in a series of navigation technology to facilitate attitude update calculations)

说明：  高通滤波器，带通滤波器，数字FIR滤波器(The Shannon entropy is a measure of the average information content one is missing when one does not know the value of the random variable. The concept was introduced by Claude E. Shannon in his 1948 paper "A Mathematical Theory of Communication". Shannon s entropy represents an absolute limit on the best possible lossless compression of any communication, under certain constraints: treating messages to be encoded as a sequence of independent and identically-distributed random variables, Shannon s source coding theorem shows that, in the limit, the average length of the shortest possible representation to encode the messages in a given alphabet is their entropy divided by the logarithm of the number of symbols in the target alphabet. )

说明：  根据教科书上已经给出的简单的数学算式，运用matlab编写出简单的代码，计算出结果(According to the textbook has been given a simple mathematical formula, using matlab write simple code to calculate the results)

matlab做回归分析必看的资料，里面有直线、曲线，一员多元分析具体实现方法(matlab to do regression analysis of data must see, there are lines, curves, more than one yuan of specific method)

Least Square - ARMA 算法的MATLAB代码, 是频谱分析(通常是在高级DSP这门课中会用到的)的常用算法(Least Square-ARMA algorithm MATLAB code, Analysis of the spectrum (usually at the senior DSP This class will be used) to the commonly used algorithm)