-
Sattellite6
code for sattelite calculaton
- 2013-09-14 17:35:12下载
- 积分：1
-
实验代码
由于卫星与用户接收机二者的连线方向上存在相对运动，因此引起了载波和伪码的多普勒效应，再加上接收机晶体震荡频率漂移和卫星时钟频漂等原因。接收机实际接收到的卫星载波中心频率一般不再等于信号被发射时的标称频率，这就需要接收机在载波频率一维对信号进行搜索。同时，由于卫星到接收机的距离时刻变化，加上接收机始终相对于GPS时间的偏差又并不固定，因而接收信号的伪码相位值也在改变，所以接收机也要在码相位一维对信号进行搜索。扩频信号的捕获是一个对目标信号频率域和相位域进行的二维搜索过程。(Because of the relative motion between the two of the satellite and the user receiver, the Doppler effect of the carrier and pseudo-code is caused, and the frequency drift of the oscillation of the receiver crystal and the frequency drift of the satellite clock are added. The frequency of the satellite carrier center that the receiver actually receives is generally no longer equal to the nominal frequency of the signal being transmitted, which requires the receiver to search the signal in one dimension of the carrier frequency. At the same time, because the distance between the satellite to the receiver is changed, the deviation of the receiver always relative to the GPS time is not fixed, so the pseudo code phase value of the received signal is also changing, so the receiver also searches for the signal in the code phase. The acquisition of spread spectrum signal is a two-dimensional search process for the frequency domain and phase domain of the target signal)
- 2018-06-27 08:59:05下载
- 积分：1
-
pso-svm电力负荷预测
电力负荷预测是电力系统规划的重要组成部分，也是电力系统经济运行的基础，其对电力系统规划和运行都极其重要。利用粒子群算法优化支持向量机更加高效准确预测电力负荷。(The power load forecasting is an important part of the power system planning, and it is also the basis of the economic operation of the power system. It is very important to the planning and operation of the power system. Particle swarm optimization is used to optimize SVM to predict power load more efficiently and accurately.)
- 2018-07-09 10:58:10下载
- 积分：1
-
新建文件夹
ICA(独立成分分解),可实现采集信号中源信号的分离，便于提取特征量，实现模式识别。同时由于可以将源信号分离开来，可实现信号的降噪，去掉基波、三次谐波、五次谐波等(ICA (independent component decomposition) can realize the separation of the source signals in the acquisition signal, and facilitate the extraction of the feature quantity, and realize the pattern recognition. At the same time, because the source signal can be separated, it can realize the noise reduction of signal, remove the fundamental wave, the three harmonic, the five harmonic, etc.)
- 2017-11-27 11:18:31下载
- 积分：1
-
shiyan
关于数学实验的几个matlab程序，里面有一个说明的幻灯片(Mathematical Experiments on several matlab program, which has a description of the slide)
- 2008-12-18 16:14:41下载
- 积分：1
-
domntet
编程的文档写的很好功能很强大，谢谢你的支持(Programming document written in a very good feature is great, thank you for your support)
- 2009-12-06 12:29:17下载
- 积分：1
-
Foundations-of-Fuzzy-Control---A-Practical-Approa
Foundations of Fuzzy Control - A Practical Approach (2e) (C5-PPTX) Fuzzy Nonlinear
- 2015-02-07 12:33:12下载
- 积分：1
-
SPHIT3
实现SPHIT编码，有n=5~2时的编码输出值！！(SPHIT coding show the output with n =5.....2)
- 2013-12-19 17:26:04下载
- 积分：1
-
bbbcfv1
BBBCF 宇宙大爆炸优化算法的matlab源码,一种相对来说比较新的优化方法，用于求解最优解问题(BBBCF iterates one iteration a population according to the rules of
Big-Bang Big Crunch method. It overwrites new population over the previous one. As the number of iterations grow, it searches new candidates in alimited search space.)
- 2014-02-25 10:32:55下载
- 积分：1
-
a-remez-exchange-algorithm-for-orthonormal-wavelet
最大频率选择的小波实现的经典论文之一，论述非常详尽.(Wavelet maximum frequency of choice, one of the classic paper discusses in great detail.)
- 2009-12-14 13:28:44下载
- 积分：1
