hundun

微波吸收代码，可以计算微波吸收特性，实用传输矩阵方法(Microwave absorption code)

本程序使用MATLAB实现了FSK的调制过程，还实现了其对应的解调(This procedure achieved using the MATLAB process of FSK modulation, but also the realization of the corresponding demodulator)

this file is about an inverter that uses a spwm pulse generator to produce its output! this file is about an inverter that uses a spwm pulse generator to produce its output!

在运载体运动情况下,提出了一种适用于捷联惯导系统(SINS)初始对准的新算法,该算法以惯性空 间为过渡参考基准,即建立了初始时刻惯性坐标系(i0系)和初始时刻捷联惯组惯性坐标系(ib0系)两个惯性坐标 系。将捷联惯组坐标系(b系)与导航坐标系(n系)之间的初始对准姿态矩阵的实现分解为三步骤:(1)通过地理 位置和初始对准时间求解i0系至n系的变换矩阵 (2)通过惯导比力方程变形,引入测速仪速度辅助,求解从ib0 系至i0系的常值变换矩阵 (3)使用姿态更新算法实时计算b相对于ib0系的变换矩阵。最后,载车运动环境下的 初始对准试验结果表明航向角对准精度达到了0.1b(1R)。 (On the moving base, a new initial alignment algorithm for strapdown inertial navigation system (SINS) is proposed. In this algorithm, two special inertial frames, the initia-l time inertial frame (i0frame) and the initia-l time SINS body inertial frame (ib0frame), are defined and are selected as transition reference frames. The calculation of initial alignment direction cosine matrix (DCM) between SINS body frame (bframe) and nav- igation reference frame (nframe) is expanded into three parts: (1) the DCM betweeni0frame andnframe is easily obtained via local geographical coordinates and initial alignment time (2) by expressing SINS specific force equation inbframe and by the aid of external velocity log, the constant DCM fromib0frame toi0frame is achieved (3) attitude updating using gyro samples gets the DCM betweenbframe andib0frame. In the end, some vehicular tests are carried out on the moving base and the accuracy of azimuth reaches about 0.1b(1R). )

说明：  信息论学科中，费诺编码，香农编码，以及霍夫曼编码是三个最为重要的编码方式，改文件包含三种编码的Matlab程序。(In the discipline of information theory, Feyno coding, Shannon coding, and Hoffman coding are the three most important coding methods, and the change file contains three kinds of coding MATLAB programs.)

直升机气动系统参数辨识 (Helicopter pneumatic system parameter identification)

基于传输矩阵法（TMM）计算VCSOA（垂直腔半导体光放大器）的稳态增益的程序。由于是从将输入端功率Pin作为已知条件，程序用Matlab优化工具箱中的fsolve函数计算了满足边界条件时的输出功率。这对于相关研究开发都是较好的资料。(This is a set of source codes, which are used for calculating the steady state gain of VCSOA based on the transfer matrix method(TMM). Since the input power of the VCSOA is regarded as a already-known condition, this program, the function "fsolve" in the Matlab Optimization Toolbox is used for obtaining the output power of the VCSOA when the input power is at some value. This is a good material for further studying the related problems, especially when using the Matlab for device simulations. )

Article about Estimating Optimal Tracking FIlter

Cooperative MIMO system

基于matlab的区域增长算法，能够有效地实现区域增长，实现快速的计算(Matlab-based regional growth algorithm, can effectively realize the regional growth, achieve rapid calculation of)