grayerror

主路径信号的前导码，主要包含功能信号和基准时间信号。(The preamble of the main-path signal)

用matlab实验水平集，运用到灰度图像上面可以得到的很好的分割效果，下载后可以直接运行得到结果(Matlab experiment level set, apply to the gray image, it can get very good segmentation effect can be run directly after download the result)

Energy consumption is a significant issue in ad hoc networks since mobile nodes are battery powered. In order to prolong the lifetime of ad hoc networks, it is the most critical issue to minimize the energy consumption of nodes. In this paper, we propose an energy efficient multipath routing protocol for choosing energy efficient path. This system also considers transmission power of nodes and residual energy as energy metrics in order to maximize the network lifetime and to reduce energy consumption of mobile nodes. The objective of our proposed system is to find an optimal route based on two energy metrics while choosing a route to transfer data packets. This system is implemented by using NS-2.34. Simulation results show that the proposed routing protocol with transmission power and residual energy control mode can extend the life-span of network and can achieve higher performance when compared to traditional ad-hoc on-demand multipath distance vector (AOMDV) routing protocol

这是一个matlab源码，利用小波原理进行图像压缩编码(This is a source Matlab, using wavelet theory for image coding)

波达方向（Direction Of Arrival）估计，又称为谱估计（spectral estimation）、波达角（Angle Of Arrival）估计。一个信源有很多可能的传播路径和到达角。如果几个发射机同时工作，每个信源在接收机处形成潜在的多径分量。因此，接收天线能估计出这些到达角就显得很重要，目的是破译出哪个发射机在工作以及发射机所处的可能位置。通过测量辐射信号的波达方向（DOA全称Direction Of Arrival）或波达角（AOA）来估测辐射源的位置。理论上这种估计只需要两个接收阵元就可以确定辐射源的位置，但在实际中，由于受到角度分辨率、多径和噪声限制，所需阵元通常要多于两个。DOA定位技术原理是利用接收机处的阵列天线和波达方向（DOA）估计技术来确定一个从接收机到信源的波达方向线，即为方向线（LOB），最后利用多个接收机估计的DOA进行三角测量，方向线的交点就是信源的估计位置。(DOA (Direction Of Arrival) estimation , also known as spectral estimation (spectral estimation), angle of arrival (Angle Of Arrival) estimation. There are many possible sources a propagation path and the angle of arrival . If several transmitters simultaneously, a potential source for each multipath component at the receiver. Therefore, the receiving antenna can estimate the angle of arrival becomes very important, which aims to decipher the location of the transmitter at work as well as possible in which the transmitter . By measuring the radiation signal DOA (DOA stands for Direction Of Arrival) or the angle of arrival (AOA) to estimate the location of the radiation source . Theoretically this estimate requires only two receiving array element can determine the position of the radiation source , but in practice , due to the angular resolution , multipath and noise limits , usually required more than two array elements . DOA positioning technology is the use of an array of antennas at)

《MATLAB时尚百例实例》实例1-13()

The TSP problem ant colony algorithm MATLAB source code

压缩图像，本代码主要介绍压缩图形的主要步骤，非常简单有很明了，非常适合阅读(The compressed image, the code describes the main steps of compressed images are very clear, very simple, very suitable for reading)

共炮点地震记录合成，添加不同比例噪声，进行小波变换去噪处理，得到比较理想的效果(the synthetic seismic record of common shot, add different noise, and do wavelet transform on it, then we can get a better record)

vebyk is a flexible and user-friendly matlab-program, which performs ordinary kriging and can be easily adapted to other kriging methods.