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rev5
基于蒙特卡洛方法的主动声纳信号检测性能分析.主动声纳信号检测性能的分析上,目前在计算机仿真中一般假定混响包络的统计特性符合瑞利分布模型。基于此模型,已经有了较完善的理论。然而,在现代高分辨声纳系统中,混响包络的统计特性并不符合瑞利分布模型。此时在接收机工作特性分析时存在大量繁琐的公式推导。因此该文采用蒙特卡洛(M onte Carlo)统计试验方法,实现对瑞利分布混响背景下的主动声纳信号检测性能分析。结合对接收机工作特性曲线的仿真,得出了检测概率的理论值和仿真结果的误差曲线。误差曲线表明,蒙特卡洛方法在主动声纳信号检测的性能评估中是可行的。 更多还原
(Active sonar signal detection performance analysis, computer simulation is generally assumed that the statistical properties of the reverberation envelope distribution model of Rayleigh active sonar signal detection performance analysis based on the Monte Carlo method. Based on this model, has been a better theory. However, in the modern high-resolution sonar system, the statistical characteristics of the reverberation envelope does not comply with the Rayleigh distribution model. At this point in the receiver operating characteristic analysis, there is a lot of tedious formula derivation. In this paper, using the Monte Carlo (M onte Carlo) statistical test methods, active sonar signal detection performance analysis reverberation background Rayleigh distribution. The receiver operating characteristic curve simulation obtained the error curve of the theoretical value and the simulation results of the detection probability. The error curve shows that the Monte Carlo method in the assessm)
- 2012-08-21 21:07:24下载
- 积分：1
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matlab
1. 给一段原始的语音信号（可以是自己录制的一段语音），加上一频率为3.8kHz的高频余弦噪声和频率为3.6kHz的高频正弦噪声（幅度自己可以选择），用窗函数设计一滤波器（要求最小阻带衰减为50dB）对加噪后的语音信号进行滤波，画出滤波器的频率响应曲线，画出滤波前后的时域图和频谱图。
需要用到的函数：
fir1 用窗函数设计FIR滤波器的函数
2. 用GUI设计一界面（如图1所示）完成如下功能：
1） 输入一语音信号，画出语音信号的时域图和频谱图；
2） 对语音信号加噪处理，画出加噪后的时域图和频谱图；
3） 给定滤波器的性能指标，采用几种不同的方法设计滤波器对加噪信后进行滤波，画出各滤波器的频率响应曲线，画出滤波后的时域图和频谱图。
(1. to some of the original speech signal (which can be a voice you record yourself), plus a cosine frequency of 3.8kHz frequency noise and frequency of 3.6kHz frequency sinusoidal noise (in the range that they can choose), with a window function to design a filter (requires a minimum stop band attenuation is 50dB) after adding noise to the speech signal is filtered, the filter frequency response curve to draw, draw diagrams and time-domain spectrum before and after filtering. Need to use the function: function fir1 with window function design FIR filter design 2. Using a GUI interface (Figure 1) complete the following functions: 1) an input speech signal, the speech signal in the time domain to draw graphs and spectrum 2) adding noise to the speech signal processing, draw diagrams and time-domain plus noise spectrum after 3) to set the filter performance, using several different methods designed to filter letter after adding noise filtering, draw the frequency response curve of each )
- 2015-01-09 10:00:04下载
- 积分：1
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quadtree
Implement the split and merge procedure for segmenting
- 2010-03-15 04:17:56下载
- 积分：1
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ICA
说明： 一个对数据进行独立成分分析的小程序，可对统计数据进行快速的降维。(An independent component analysis of the data of small procedures, statistical data on the fast dimension reduction.)
- 2011-03-05 17:15:14下载
- 积分：1
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detection
一种matlab实现网络划分的算法，主要用于复杂网络中的社区发现(A matlab algorithm for network partition, which is mainly used for community discovery in complex networks)
- 2020-10-12 15:37:32下载
- 积分：1
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GA-MATLAB
关于遗传算法的一些介绍及其matlab程序(Program on genetic algorithm matlab)
- 2011-09-07 13:18:17下载
- 积分：1
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4cpfsk
生成进制数为4，调制指数为1的4CPFSK信号(Generate a hexadecimal number is 4, the modulation index for 1 4CPFSK signal)
- 2021-03-30 19:19:10下载
- 积分：1
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新建 DOCX 文档
说明： 运用newmark法计算车桥耦合振动
桥取4阶模态，车为单自由度，车速5m/s，车辆，桥梁参数已经带入矩阵(Calculation of coupling vibration of vehicle and bridge by Newmark method)
- 2020-11-05 20:59:50下载
- 积分：1
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ga
说明： 使用“旋轮法正比选择”、“单切点交叉”和单点突变的遗传算法(Use " proportional to select the roller method," " single-cut point crossover" and the single point mutation in the genetic algorithm)
- 2010-06-29 11:59:05下载
- 积分：1
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signaal_tone
analysis example frequency varable signal and different bandwidth
- 2010-01-14 16:16:23下载
- 积分：1
