leach5

说明：  MATLAB做的源代码，用于录制声音等获取信号啦，研究(MATLAB to do the source code, used to record the voice signal, such as access to you, research)

自己编的matlab厂程序。这是将局部坐标系的坐标转化为球面坐标系的坐标，非常实用。(own addendum to the Matlab plant procedures. This is the will of local coordinates into spherical coordinates, very practical.)

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). )

简单的卡尔曼程序，里面详细介绍了5条核心公式的使用，适合初学者，里面的注释也很多。(Simple Kalman procedure, which details the use of the five core formula, suitable for beginners, inside comment.)

Trace for all matlab implementation

matlab对语音信号中断点检测算法的一种实现。(matlab on the voice signal detection algorithm of a breakpoint to achieve.)

matlab遍历算法程序，对所有的元素都遍历一篇，已经验证可用(traversal algorithm matlab procedures, all the elements are traversed one has been used to verify)

64 QAM Constellation Diagram

8155中文资料，详细介绍了8155芯片，包括原理及应用，在网上好不容易找到的(8155 Chinese data, detailing the 8155 chips, including the theory and application, not easy to find on the Internet)

说明：  本文给出了用matlab实现简单UWB定位系统的所有代码，并可产生可视化的操作界面。(In this paper, simple to use matlab UWB positioning system all of the code, and can cause visual interface.)