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juliangfa
说明: 设计一八木天线,振子数目为4,长度分别为:反射器长度0.39,主馈振子长度0.356,引向器长度均为0.3;反射器和主馈振子的距离0.265,主馈振子和第一引向器的距离0.2575,第一引向器和第二引向器的距离0.225。天线工作频率为400MHz,各振子分段数为9。
利用矩量法模拟该天线的电流分布,并绘制方向图。(A eight wood antenna is designed. The number of vibrators is 4 and the length is 0.39 for the reflector, 0.356 for the main feeder and 0.3 for the director. The distance between the reflector and the main feeder is 0.265, 0.2575 for the main feeder and the first director. The distance between the first director and the second director is 0.225. The working frequency of the antenna is 400MHz and the number of segments of each vibrator is 9.)
- 2020-02-20 22:53:54下载
- 积分:1
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一个vc6.0编译boostregex图书馆下。使用简单方便,做…
一个在vc6.0下编译好的boostregex库。使用简单方便,不用编译-Under a vc6.0 compiled boostregex library. The use of simple and convenient, do not compile
- 2022-01-25 18:34:08下载
- 积分:1
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KDM_v1565
KDM is an open source combat log parser for Aion Online and much more than a damage meter.
- 2019-01-12 17:08:44下载
- 积分:1
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LOL热键连招助手v1.1
应景的变成表秀天天破解,应景的变应景的变(Seemingly intelligible and unproductive)
- 2020-06-22 02:20:01下载
- 积分:1
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LL(1)文法分析
说明: LL(1)文法的识别,和LL(1)分析表的构造(Recognition of LL(1) Grammar and Construction of LL(1) Analysis Table)
- 2019-01-02 15:59:09下载
- 积分:1
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Social force model
说明: 模拟行人从房间疏散过程,基本原理采用社会力模型(An evacuation model based on the social force model)
- 2020-07-09 18:10:54下载
- 积分:1
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心电信号检测与分类算法的研究
说明: (1)心电信号预处理
心电信号是一种低频且含有众多噪声干扰的信号。针对心电信号存在的
噪声干扰问题,本文采用了平稳小波变换结合双变量阈值的方法对其进行去 噪处理。通过对心电信号进行八层平稳小波变换,得到不同的小波系数,采
用双变量阈值函数表达式对其进行处理得到新的小波系数,最后进行逆平稳
小波变换实现小波重构,完成心电信号去噪。Matlab 仿真结果显示,本文算
法的准确率较高,信噪比达到 84.5934dB。 (2)心电信号波形识别
反映心电信号的特征部分往往是信号的突变点,因此需要对心电信号的
突变点进行识别检测。本文通过采用二次 B 样条小波对去噪后的心电信号
进行四层平稳小波变换,在第四尺度上对心电信号的 R 波进行波形检测。 在第二尺度上以正确检测 R 波为基础,实现 Q 波和 S 波的波峰、起始点及
终止点检测。为了保证检测精度,本文设置了误检漏检机制。最后在第五尺 度实现了 P 波和 T 波波峰、起始点及终止点检测。仿真结果表明本文的算
法检测精度较高,准确率达到 99.81%。(This paper proposes an efficient method of ECG signal denoising using the adaptive dualthreshold filter (ADTF) and the discrete wavelet transform (DWT). The aim of this method isto bring together the advantages ofthese methods in order to improve the filtering ofthe ECGsignal. The aim of the proposed method is to deal with the EMG noises, the power lineinterferences and the high frequency noises that could perturb the ECG signal. This algorithm is based on three steps of denoising,)
- 2020-03-06 12:37:15下载
- 积分:1
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Mathcad - boot_loop_clc
说明: 28377 环路计算,基于MATHCAD(28377 loop calculation based on MathCAD)
- 2019-11-28 16:39:29下载
- 积分:1
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code
土地折算:在vb环境下基于mo的不同等级土地折算系统的开发,(Land conversion: vb environment in different grades of land-based mo conversion system development,)
- 2010-05-28 11:24:15下载
- 积分:1
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maze
通过把一个格子图中的一些边删除后生成迷宫图形.下图左边是一个5X5格子图, 有边是生成的一个迷宫图.给定一个MXN的格子图,请用种子填充算法生成一个迷宫图形(By removing some edges of a grid graph, we can create maze graphs. The left side is a 5X5 grid graph, with edges generating a labyrinth diagram. Given a MXN grid graph, please use seed filling algorithm to create a labyrinth graph.)
- 2020-11-20 19:09:36下载
- 积分:1