a

求解Lambert问题。 输入：轨道上两个点的位矢R1、R2，以及从R1到R2所用的时间t(缺点是脉冲太大)。 输出：质点在R1端点的速度V1，质点在R2端点的速度V2. 此函数用于：在给定轨道上两个点的位矢R1、R2，以及从R1到R2所用的时间t。求解V1、V2。再调用前面的函数就可以确定轨道根数，及任意时刻质点的状态。(To solve the Lambert problem. Input: track two-point position vector R1, R2, and R1 to R2 used in the time t (The disadvantage is that the pulse is too large). Output: particle R1 endpoint speed V1, the particle in the R2 endpoint speed V2. This function is used: two points in a given orbit position vector R1, R2, and from R1 to R2 with the time t. Solve the V1 and V2. And then call the previous function can determine the orbital elements, and any moment of the particle' s state.)

AITKEN S INTERPOLATION Aitken s procedure yields systematically and successively better interpolation polynomials corresponding to successively higher order truncation of Newton s divided difference formula. Given a set of x and corresponding f(x), estimate f1(x1) f1= aitkenInterp(x,f,x1) f = corresponding function of x f1= corresponding function of x1

主要就是实现L_M优化算法，用matlab写的 转成c该很容易的，用来仿真用的，希望大家给出点意见，第一次上传(err)

说明：  一个用matlab实现的ARMA变换程序(a program of ARMA based on matlab)

matlab code for image to pixels conversion and vice verse

simulation on the schtocastic processesx is given

说明：  一个MATLAB的应用程序，很方便的！使用时需要转换为M文件。(A MATLAB application, very convenient! The use of M need to convert files.)

四元数法实现对卫星姿态的判断，四元数法实现对卫星姿态的判断，四元数法实现对卫星姿态的判断(Quaternion method on the judgment of the satellite attitude quaternion method to achieve a judgment of the satellite attitude, the quaternion method on the judgment of the satellite attitude )

凸分析基础 中文教材。纯粹这方面的资料不多（多为凸优化之类），中文的书籍更难找，有用该方面知识的同行多多交流。(Chinese textbook based on convex analysis. Little information in this area (mostly convex optimization and the like), Chinese books are harder to find, useful knowledge that more exchanges with colleagues.)

particle swarm optimiztion