Form21s

Matlab function reference Book Matlab function reference BookMatlab function reference BookMatlab function reference BookMatlab function reference BookMatlab function reference Book

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). )

介绍了基2时域抽取法FFT的原理和算法,并在MATLAB仿真软件的辅助下、在数字信号处理 DSP上实现。 (Describes the radix-2 time-domain extraction principle and FFT algorithms, and the aid of MATLAB simulation software, in digital signal processing DSP to achieve.)

快速傅立叶变换和圆周卷积的通用MATLAB源程序,非常有参考价值(Fast Fourier Transform and Convolution circumference generic MATLAB source code, very useful)

2.LFM信号的分数阶傅里叶域自适应滤波算法研究.rar(2.Fourier domain adaptive filtering algorithm Fractional LFM signals.rar)

设有一个随机信号 服从AR(4)过程，它是一宽带过程，参数如下： 我们通过观测方程 来测量该信号， 是方差为1的高斯白噪声，用LMS算法和RLS算法通过观测方程来估计原信号。并用Matlab对此问题进行仿真。 (There is a random signal obedience AR (4) process, which is a broadband process parameters are as follows: We are measured by observing the signal equation is a Gaussian white noise variance, with the LMS algorithm and RLS algorithm to estimate the observation equation the original signal. This issue with Matlab simulation.)

说明：  机动目标跟踪的一本书，pdf版的，经典。要看。(Target tracking in a book, pdf version of the classic. Look.)

包含matlab常用的各种函数，适合于初学matlab者查询、使用。(Contains a the matlab commonly used in a variety of functions, suitable for beginners matlab query, use.)

Matlab code for simulation of Genetic Algorithm

利用有限差分软件Flac3d生成人工地震波，并用于岩土工程动力分析(Using finite difference software Flac3d generate artificial seismic waves, and for dynamic analysis of geotechnical engineering)