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normal-estimation-for-3D
三维点云法向量估计综述由于获取方便、表示简单、灵活等优势，点云逐渐成为常用的三维模型表示方法之一。法向量作为点云必不可少的属性
之一，其估计方法在点云处理中具有重要的位置。另一方面，由于点云获取过程中不可避免的噪声、误差和遮挡，点云中通常含
有噪声、外点和空洞，并且部分采样模型如CAD模型，也会存在尖锐特征，这些都给法向量估计提出了挑战。对当前已有的点云
法向量估计算法进行综述，分析其原理及关键技术，着重分析它们在处理噪声、外点和尖锐特征等方面的能力并给出比较，最后
为未来研究提供了一些建议(The three-dimensional point cloud normal vector estimation summarized obtain convenient, represents a simple, flexible, and becoming one of the methods commonly used three-dimensional model represents the point cloud. Normal vector of one of the as point clouds essential attributes, its estimation method has important position in the point cloud processing. On the other hand, the noise is inevitable in the process to obtain because of the point cloud, error and occlusion, point cloud typically contains noise outside point and empty, and part of the sampling model such as CAD models, there will still be sharp features, which gave the normal vector estimated that presents a challenge. Overview of current existing point cloud normal vector estimation algorithm, analysis of the principle and key technologies, and analyzed their ability to deal with the noise, the outer points and sharp features and gives comparison, and finally provide some suggestions for future research)
- 2013-03-03 15:48:46下载
- 积分：1
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symbol-timing-synchronization
QPSK平方律定时同步算法实现定时误差和定时恢复(QPSK square timing synchronization algorithm ，estimate timing error and timing error correction
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- 2021-03-26 13:59:13下载
- 积分：1
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sanciyangtiao
根据给定函数的结点的函数值，以及边界条件，计算差指点的近似值。(According to a given function node function values, as well as boundary conditions to calculate the approximation of poor advice.)
- 2008-06-10 20:47:48下载
- 积分：1
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trans_sigPnoisePinterference
根据直扩原理，首先有随机数发生器产生一系列二进制信息数据（+1，-1），每个信息比特重复Lc次，Lc对应每个信息比特所包含的伪码片数，包含每一比特Lc次重复的序列与另一个随机数发生器产生的PN序列c(n)相乘。然后在该序列上叠加高斯白噪声和形式为i(n)=Acosw0n余弦干扰下次信号，切余弦干扰信号的振幅满足条件A<Lc。在解调器中进行与PN序列的互相关运算，并且将组成各信息比特的Lc个样本进行求和。加法器的输出送到判决器，将信号与门限值0进行比较，确定传送的数据为+1还是-1，计数器用来记录判决器的错判数目。(According to the principle, first some straight expansion random number generator produces a series of binary data (+ 1-1), each information bit repetitive Lc times, Lc for each information bit contains PN code piece count, embraces each bit Lc times repeated sequence and another random number generator produces PN sequence c (n) multiplication. Then in the sequence superimposed on gaussian white noise and forms as I (n) = Acosw0n cosine interference next time signal, cut cosine interfering signal amplitude satisfy conditions A < Lc. In the modem with the cross-correlation operation PN sequence, and the information will comprise the Lc a sample bits peace. The output of the adder judgment device, will signal to compare with threshold 0 data transmitted, determine for+ 1 or-1, counter is used to record the number victimised judgment.
)
- 2011-04-20 10:18:47下载
- 积分：1
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QRfenjiwsuanfa
基于QR分解算法的自适应波束方向图形成，运算量较小(adaptive beamforming algorithm based on QR decomposition)
- 2012-04-06 16:28:17下载
- 积分：1
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zishiyin
线形阵列天线的自适应波束形成SMI SLC LMS 圆环形阵列的三维方向图(Adaptive beam forming a three-dimensional linear array antenna pattern SMI SLC LMS annular array)
- 2014-02-18 18:28:18下载
- 积分：1
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StringRecognition
上传的matlab程序代码是一个水表字符识别代码，采用BP神经网络识别。(Upload matlab code is a meter character identification code, using BP neural network.)
- 2014-05-21 16:28:23下载
- 积分：1
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RANSAC
随机抽样一致性（RANSAC）算法MATLAB实现(Random sample consensus (RANSAC) algorithm based on MATLAB realization)
- 2014-07-01 09:56:28下载
- 积分：1
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multiple_access_protocols
该源程序代码实现了如：纯ALOHA，扩展ALOHA,CSMA,ISMA等的多径通信协议通信仿真实现，程序结果给出了各个通信协议下传输数据的成功率和时间延迟。(Realize that the source code such as: pure ALOHA, the expansion of ALOHA, CSMA, ISMA and other multi-path communication protocol communication simulation realize, given the results of the proceedings of various communication protocols to transmit data under the success rate and time delay.)
- 2007-08-19 10:26:21下载
- 积分：1
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Moses_By_Mahmoud_Ghassan
Narration de l histoire du prophète Moise
- 2013-11-14 17:28:14下载
- 积分：1
