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Description: How to retain the aspect ratio of an image while resizing.
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Size: 29696 |
Author: zxc |
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Description: 这是求信噪比的程序，就是信息噪声功率比上噪声功率-This is the signal to noise ratio for the procedure is, the information on the noise power ratio noise power
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Size: 1024 |
Author: 尹超 |
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Description: 梯度倒系数实现背景抑制,提高小目标检测的信噪比-reversing Coefficients gradient background suppression, and enhance the signal-to-noise ratio target detection
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Size: 1024 |
Author: 李彪 |
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Description: 本程序是经典谱估计方法的程序，仿照＜数字信号处理＞胡广书．包含了书中后面三章的所有方法．另外还有ＦＩＲ，ＩＩＲ数字滤波器的去噪方法，ＳＶＤ特征值去噪，信噪比的计算等等．是一经典的程序组．希望和所有人共享-this procedure is classic method of spectral estimation procedures, modeled on the "Digital Signal Processing" Mr Kwong book. The book contains three chapters behind all the way. Another FIR, IIR digital filter de-noising, SVD eigenvalue denoising, the signal-to-noise ratio calculation, and so on. Is a classic procedure group. All sharing hopes and
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Size: 2530304 |
Author: 单昊 |
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Description: 这是一个实现图象加权信噪比算法，他能实现图象失真程度的衡量-This is a weighted signal-to-noise ratio images algorithm, he is able to achieve levels of image distortion measure
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Size: 3072 |
Author: 杨永 |
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Description: 利用duffing振子检测微弱信号频率的matlab程序。可以检测与周期策动力频率相差0.03之内的微弱信号频率。信噪比达到-68db-use Duffing oscillator frequency detection of weak signals in Matlab procedures. Can be detected with the cycle driven frequency difference of 0.03 within the weak signal frequency. Signal-to-noise ratio-68db
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Size: 1024 |
Author: 张文 |
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Description: 高分辨率要求系统具有大的带宽，瞬时带宽的增加必将提高系统对硬件的要求，本文采用方便灵活的步进频率波形信号。脉间频率步进波形通过子脉冲载频的步进变化来获得大的有效带宽，使成像具有高分辨率，采用加窗和补零方法提高信噪比，但该信号对目标径向速度非常敏感。采用补零方法提高距离取样分辨率，使距离像细化，并用公式说明了补零只能提高距离取样分辨率，并不能改变频率步进信号的距离分辨能力。该信号波形对目标径向速度的敏感，使目标能量分散到邻近的距离单元造成距离分辨率下降，如果不事先进行速度补偿，直接对回波信号进行逆傅立叶变换，将使所成一维距离像发生频谱展宽，并伴有距离像发生平移。本文证明了当目标有径向速度时仍采用对回波信号直接进行逆傅立叶变换的方法将使一维距离像发生频谱展宽并伴有距离像发生频移，从而严重影响了一维距离像的质量。-high-resolution requirements of the system with large bandwidth, the increased instantaneous bandwidth will improve the system of hardware, In this paper, a flexible and convenient step frequency signals. Pulse frequency step-pulse waveform through the carrier frequency step to achieve great changes in the effective bandwidth. make imaging with high resolution, increasing the window and fill methods to improve signal-to-noise ratio is, However, the signal on the target radial velocity is very sensitive. Using zero-distance sampling method to improve resolution, so that distance as refinement, and formulates a zero-distance sampling can improve resolution, does not alter the frequency of the signal from stepping resolution capabilities. The signal waveform on the target radial velocity sens
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Size: 2048 |
Author: 石榴石 |
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Description: 已知载波频率的扩频通讯MATLAB程序，通过扩展频率实现低信噪比的传输 -known carrier frequency of spread spectrum communication MATLAB program, through the expansion of low-frequency signal-to-noise ratio transmission
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Size: 1024 |
Author: zhouhui |
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Description: 模拟高斯信道，画出误码率与信噪比的关系曲线-simulation Gaussian Channel paint BER and the signal-to-noise ratio curve
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Size: 1024 |
Author: xutao |
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Description: 语音端点检测是语音识别中至关重要的技术。无论军用还是民用，语音端点检测都有着广泛的应用。在低信噪比的环境中进行精确的端点检测比较困难，尤其是在无声段或者发音前后-voice activity detection is critical speech recognition technologies. Whether military or civilian, voice endpoint detection have broad application. Low signal-to-noise ratio in the environment for accurate endpoint detection more difficult, especially in or pronunciation of the silent before and after
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Size: 531456 |
Author: 李一 |
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Description: 一个OFDM系统的仿真程序,可看出信噪比与误码率之间的关系.-an OFDM system simulation program, we can see the signal-to-noise ratio and bit error rate of the relations between them.
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Size: 1024 |
Author: huang |
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Description: 有关于OFDM在不同信噪比下的误比特率，大家可以看看啊-on OFDM different signal-to-noise ratio in the bit error rate, we can see ah
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Size: 3072 |
Author: fancyou |
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Description: 实现对数压缩PCM和线性PCM的信噪比特性曲线的仿真，非均匀量化级数为n=8和n=6。-realization of a number of PCM compressed and linear PCM signal-to-noise ratio of the characteristic curve simulation, non-uniform quantization Series n = 8 and n = 6.
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Size: 1024 |
Author: 段美姣 |
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Description: 这个程序是用格雷-RM编码法抑制峰均功率比的matlab仿真程序，对1000个OFDM符号进行统计然后表征算法对PAPR的改进程度，绝对可以运行-This procedure is used Gray- RM coding method for suppressing the peak to average power ratio of Matlab simulation program, 1,000 pairs of OFDM symbols statistics then PAPR characterization of the algorithm improvements, definitely can run
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Size: 1024 |
Author: baoruihan |
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Description: 改进的SLM算法，用于降低OFDM系统的峰值平均功率比-Improved algorithms for OFDM system to reduce the peak-to-average power ratio
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Size: 254976 |
Author: guoxu |
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Description: OFDM系统中用SLM算法降低系统的峰值平均功率比-SLM OFDM system using the algorithm to reduce peak-to-average power ratio
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Size: 1024 |
Author: guoxu |
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Description: OFDM系统中用限幅法降低系统的峰值平均功率比-OFDM system limiting method used to reduce the peak-to-average power ratio
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Size: 1024 |
Author: guoxu |
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Description: The source code for OFDM Peak-to-Average Power Ratio
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Size: 1024 |
Author: thanh |
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Description: matlab数字图像分割，可以提取一幅图中想要的目标，并计算出目标的面积，周长和长宽比。-Digital Image Segmenting Useing Matlab.This program can extract the interesting target from a figure, and calculate the target area, perimeter and aspect ratio.
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Size: 2048 |
Author: 郑 |
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Description: Optimization of the gear ratio of two speeds in terms of the lowest battery consumption
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Size: 3072 |
Author: habib1418 |
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