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说明：  大叔大叔大叔的撒的大大说的我该如何一天大大说的撒的撒(qazqqswqfdeferhgtyndvSXVergbVberhaegadfvxczvzxcvcxzvzxczxcvzxczxcvzxcv)

complete source code for game quake 1 by id software, a must have for game programers

在对适用于 ＧＰＳ／ＩＮＳ组合导航非线性模型的容积卡尔曼滤波进行深入研究的基础上，提出了一种改进的多重渐消 Ｈ∞ 鲁棒容积卡尔曼滤波算法．基于系统状态的可观测性给出多重渐消因子矩阵求解过程，提高滤波算法的稳定性，抑制滤波发散；引入 Ｈ∞ 鲁棒思想，构造多重渐消Ｈ∞ 鲁棒容积卡尔曼滤波器；提出采用一种奇异值分解的矩阵分解策略代替标准容积卡尔曼滤波中的 Ｃｈｏｌｅｓｋｙ分解，进一步提高算法的数值稳定性．结果表明：改进的多重渐消 Ｈ∞ 鲁棒容积 算法不仅能有效抑制滤波发散，提高算法的稳定性，还对观测异常值具有更高的鲁棒 性；(Based on the in-depth study of the volume Kalman filter for the nonlinear model of GPS/INS integrated navigation, a new method is proposed. An improved multi-fading H_ infinity robust cubic Kalman filter algorithm is proposed. Based on the observability of the system state, the multi-fading is given.)

说明：  function C=capacity(SNR,Nt,Nr) %SNR=0; %定义信噪比为0HZ A=10^(SNR/10); %信噪比的单位转换关系式 Im=eye(min(Nr,Nt)); %这里的"1"为发射天线和接收天线两者数目少的根数 sum=0; %初始化sum为0 for i=1:10000 %程序循环10000次 H=randn(Nr,Nt); %产生高斯信号源 if Nr<Nt Q=H*H'; %求威沙特矩阵 else Q=H'*H; end sum=sum+log2(det(Im+A*Q/Nt)); %10000次循环得到的信道容量总和 end C=sum/10000 %10000次循环的平均值(function C=capacity(SNR,Nt,Nr) %SNR = 0;% defines SNR as 0Hz A = 10 ^ (SNR / 10);% s / N unit conversion relation Im = eye (min (NR, NT));% here "1" is the number of the less number of transmitting antenna and receiving antenna Sum = 0;% initialize sum to 0 For I = 1:10000% program cycles 10000 times H = randn (NR, NT);% produces Gaussian signal source if Nr<Nt Q = h * H ';% to find the weissard matrix else Q=H'*H; End Sum = sum + log2 (DET (IM + A * q / NT));% sum of channel capacity from 10000 cycles End C = sum / 10000% average of 10000 cycles)

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C语言循环扫描16个按键，按键去抖动，检测按键是否松开。(C language cycle scan 16 keys, keys to jitter, check whether the keys are loosened)

pda连接蓝牙打印机程序，c#开发的语言(pda connection blue printer)

说明：  以悬臂梁为例，用有限元法编程生成质量矩阵和刚度矩阵（采用平面梁单元，单元数在10到30之间）。 使用matlab的用于广义特征值问题分析的函数（eig(A,B,'chol')，该命令使用乔莱斯基分解的方法，计算对称矩阵A和对称正定矩阵B的广义特征值问题。A对应刚度矩阵，B对应质量矩阵）计算梁的前三阶固有频率和振型，计算得到梁的前三阶固有频率和振型，并画出振型图。(Taking cantilever beam as an example, the mass matrix and stiffness matrix are programmed by finite element method (using planar beam elements, with units ranging from 10 to 30). Using Matlab's function (eig (A, B,'chol') for the generalized eigenvalue problem analysis, the command uses the Jo Lessky decomposition method to calculate the generalized eigenvalue problem of the symmetric matrix A and the symmetric positive definite matrix B. A corresponds to the stiffness matrix and B corresponding to the mass matrix. The first three natural frequencies and modes of the beam are calculated, and the first three natural frequencies and modes of the beams are calculated, and the vibration pattern is drawn.)

说明：  Matlab实现对正弦波采样的线性内插，及上采样过程。(Matlab to achieve sampling sinusoidal linear interpolation, and the sampling process.)

难得的FFT计算软件文档。对在设计中用到FFT的同行有一定帮助-dspic fft