peak_search

说明：  用牛顿插值法对离散点进行差值，如果在原来的基础上增加一个点，用该种插值法速度很快，效率高(Using Newton)

声纳技术 常规的波束形成 信号形式：实信号,f0=1.5kHz，fs=15kHz 与带通采样等效。 统计方位估计性能与信噪比之间的关系，snr=0:30(Sonar technology)

经典的MUSIC算法可对非相干信号实现很好地估计，在相干信源的情况下经典的MUSIC算法失效，无法准确估计出信源波达方位角度。引入空间平滑技术来对相干信号进行预处理,以减弱或消除信号之间的相干性，改进后的MUSIC算法能对相干信号的DOA 实现精确估计。(The classical MUSIC algorithm can achieve a good non-coherent signal is estimated that in the case of coherent sources the classic MUSIC algorithm is disabled, can not accurately estimate the source azimuth angle of arrival. Spatial smoothing technique to the introduction of coherent signals pretreatment to weaken or eliminate the coherence between the signals, the modified MUSIC algorithm for DOA of coherent signals to achieve precise estimates.)

说明：  to detect branch and end points of bones

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). )

这是基于观测器的DMC算法，可以和GPC算法进行比较，控制效果不输GPC算法(This is the DMC algorithm based on observer , and it can be compared with GPC algorithm ,it s control effect is better than GPC algorithm)

地震波的加pml边界的正演模拟程序，震源在中心，向四周扩散。(Plus pml boundary of the seismic wave forward modeling program source in the center to the edges.)

Matlab实现界面友好，利用matlab针对图像进行马氏距离计算 ,抑制载波型差分相位调制。( Matlab to achieve user-friendly, Using matlab to calculate the Mahalanobis distance for the image, Suppressed carrier type differential phase modulation.)

MATLAB用户应用程序编程接口方面书籍，讲解详细，是一本好书。(MATLAB user interface application programming books, explain in detail is a good book.)

how to construct a gui using matlab