bfgs

This MATLAB code demonstrates the finite-difference frequency-domainmethod by modeling transmission and reflectance from a photonic crystal.(This MATLAB code demonstrates the finite-difference frequency-domain method by modeling transmission and reflectance from a photonic crystal.)

這是一本MATLAB程式設計延伸技巧程式書本上的程式碼CH7(一次無法全部上傳會斷線)(This is an extension of MATLAB programming skills in program code books CH7)

MATLAB LabVIEW SystemView 仿真分析(MATLAB LabVIEW SystemView SIMULATION)

有限元单元划分 checkgeometry(Finite Element unit division checkgeometry)

laplace小波相关滤波法的Matlab实现方法，可以作为参考学习(Matlab laplace wavelet correlation filtering method implementations can be used as a reference to learn)

以二体问题为模型，从地球发射航天器探索火星，途中需经过一次无动力金星借力，寻找最优（总速度增量最小）的发射时间窗口和飞行时间，并绘制地球到金星的Pork-Chop发射能量等高线图。发射时间窗口为2023—2033年，总飞行时间不得大于2年。(Taking the two body problem as the model to explore Mars from the earth, it is necessary to seek an unpowered Venus transit force on the way to find the optimal time window and time of flight (the minimum total velocity increment), and draw the contour map of the Pork-Chop emission energy of the earth to Venus. The total launch time window is from 2023 to 2033, and the total flight time is not more than 2 years.)

说明：  基本的直方图绘制方法： （1）直方图的绘制； （2）直方图均衡化(The basic method of drawing histogram: (1) Draw the histogram (2) Histogram equalization)

Bairstow s approach is to use Newton s method to adjust the coefficients u and v in the quadratic x2 + ux + v until its roots are also roots of the polynomial being solved. The roots of the quadratic may then be determined, and the polynomial may be divided by the quadratic to eliminate those roots. This process is then iterated until the polynomial becomes quadratic or linear, and all the roots have been determined, bisection and other

均匀圆阵的波束方向图 注释明了 易懂 对阵列信号初学者有益(Uniform circular array beam pattern annotation beneficial array signal clear and understandable for beginners)

三电平原理仿真，请根据您的实际使用情景进行修改(Three-level principles of simulation, please be modified according to usage scenarios)