exm

四元数的隆戈库塔法，利用隆戈库塔队四元数进行更新，可以从中提取出载体姿态信息(Quaternion Longo Kutta method, using Longo Coulthard team quaternion update, can be extracted from vector-profile information)

卡尔曼滤波法实现分布式传感器的航迹模拟，matlab源代码(Kalman filter method for distributed sensor track initiation, matlab implementation)

说明：  这是一个无人机锂电池电池管理系统的电量估计算法(This is a power estimation algorithm of UAV lithium battery management system)

single ended primary inductor converter

Matlab S-Function Lecture,very Good!m Code to Simulink module.

SSIM Index, Version 1.0 Copyright(c) 2003 Zhou Wang All Rights Reserved. The author was with Howard Hughes Medical Institute, and Laboratory for Computational Vision at Center for Neural Science and Courant Institute of Mathematical Sciences, New York University, USA. He is currently with Department of Electrical and Computer Engineering, University of Waterloo, Canada.

小数据量法求Lyapunov的优化程序,把网上的源程序优化过了，勘除了一下错误(small data Lyapunov method for the optimization of procedures and on-line optimization of the source too. In addition to this survey errors)

Generates a structure similar to the Claussen Shadow Fading Map but without any shadowing (to deactivate shadow fading)

DFT进行频谱分析时的三种现象 1、混叠：对连续信号采样，要求连续信号是带限的，采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。 采样前加低通滤波器防混叠 2、频谱泄漏：DFT对时域信号进行了截断（相当于采样信号乘了一个窗函数），时域的乘积相当于频域卷积，改变了原信号频谱。 改用其他窗函数（非矩形）改善泄漏。 3、栅栏现象：DFT 只给出了频谱在采样点上的取值，采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)

说明：  这个程序简单的介绍了OFDM的变体f-ofdm的误码率(This program simply introduces the bit error rate of the variant f-ofdm of OFDM.)