signal noise ratio造句
例句与造句
- Raw thermal images acquired by pulsed thermography ( pt ) usually have low signal noise ratio ( snr ) and temperature contrast
摘要脉冲热像检测中直接获取的原始热像往往信噪比较低、对比度较差。 - Experiment results show that in low bit rate environment , the new image compression scheme performs better than jpeg in the aspects of perception and psnr ( peak signal noise ratio )
实验结果表明该算法在低码率下，相比jpeg ，获得了在视觉效果和峰值信噪比方面更好的恢复图像质量。 - Finally , by using mismatched filter technique , optimized code is studied and searched . this kind of code will be used broadly in the future because it has the property of no sidelobe and low snr ( signal noise ratio ) loss
最后，采用失配滤波器技术，研究并计算机搜索了距离旁瓣为零而信噪比损失很小的优化码，该优化码可有良好的应用前景。 - In order to improve signal noise ratio ( snr ) , wavelet denoising is used , and the radar in - pulse characteristics is extracted by wavelet - ridge , radar emitter signal sorting is realized by neural networks
该方法首先对接收到的雷达信号进行小波去噪，达到提高信噪比的目的，然后利用小波脊线法准确提取其脉内特征参数，最后基于神经网络实现信号的分选。 - The maximum likelihood estimator ( mle ) approach is an important one in frequency estimation domain . this approach has the merit such as exhibiting best performance and requiring minimum threshold of signal noise ratio in calculation
最大似然频率估计法是该领域中的一种重要的研究方法；该方法具有估计结果准确，计算所要求的信噪比门限值低等特点。 - It's difficult to find signal noise ratio in a sentence. 用signal noise ratio造句挺难的
- This kind of sensor should have enough defect quantitative differentiation and high signal noise ratio . and the data dealing and recognizing is also a very difficult task in the nondestructive defect detection of the wire rope
传感器应该具有足够的缺陷定量分辨能力和高的信噪比，而且对检测信号进行数据处理和定量识别也是钢丝绳缺陷检测系统研究中的难点。 - Not only can gain mismatch of the sigma - delta modulator be minimized , but the overload of the later stage sigma - delta modulator can also b e resolved without sacrificing the signal noise ratios ( snr ) of the over all system
不仅可以减轻积分三角调变器增益不匹配之困扰，并且可以解决后级积分三角调变器容易过负载之问题；然而，却不会让整体系统的讯号杂讯比( snr )降低。 - Based on adaptive quad - tree fractal image encoding scheme , the concept and algorithm of peak signal noise ratio ( psnr ) based on the fractal codes is put forward , and is used to match the similarities between images
本文以自适应四叉树分割的分形图像编码为基础，提出了图像的分形码峰值信噪比的概念和算法，在无须解码的情况下，直接对分形码来量化图像间的相似性。 - Moreover , an optimized lna structure - inter - stage inductor matching - is presented , which can achieve conjugate match of two stages , maximize the forward transmission , sequentially increase the signal noise ratio ( snr ) and reduce the noise figure
并提出了级间匹配电感的设计方案,此优化结构能实现两级之间的共轭匹配,使信号的正向传输最大化,从而增大信噪比,降低了噪声。 - It is difficult for moving dim target to tracking and detect because the signal noise ratio ( snr ) of target is low and it has not texture etc . first of all , this paper introduces the state of researches of dim target detection and tracking in domestic and abroad
本文重点研究了弱小目标检测及其跟踪的方法。研究低信噪比弱小目标的实时检测及跟踪算法,其困难主要为:目标信噪比低,无纹理特征。 - Area electronic buoys system is a large - scale underwater sound equipment of tracking and locating moving objects such as submarines , torpedoes and ships . with advanced vector sensors as detective devices , it has excellent antinoise performance , and its signal noise ratio is high
区域电子浮标系统是一套大型的水声跟踪定位设备，其主要任务是准确跟踪和定位海上多个运动目标(如潜艇、鱼雷、船只等)的运动轨迹。 - On the basis of the above we put forward some improved schemes such as the linear prediction in lower snr ( signal noise ratio ) environment , the endpoint detection method and the threshold decision by ann according to the real circumstance
在此基础上本文还针对特定的应用领域提出了系统的一些改进方案，如适应低信噪比环境的线性预测方法，改进的dtw算法，以及用人工神经元方法进行端点检测两级判别法的阀值确定。 - Meanwhile , under the condition of continuous wave radiant , how to get the time difference precisely in the low signal noise ratio become another problem . the paper firstly introduce basic principle of the tdoa location technology while the merits and demerits is also given
同时,电子战中不仅有大量脉冲辐射源,而且还有连续波辐射源的现状使得怎样在信噪比较低的条件下准确无误得到辐射源的时差也是该领域一个难点。 - Firstly , introduce the design of sonar display , trace - to - trace correlation and gray scale display , develop a new method of gray scale based on signal noise ratio . and next , discuss array signal processing and image processing in order to improve the display . finally , develop a software of sonar display simulator based on object oriented programming , with which the sonar display console is simulated and the performance of sonar signal is tested
本文工作围绕如何提高声纳显示效果，介绍了声纳显示屏幕的设计方案，论述了“迹迹相关”技术、灰度显示技术在声纳显示中的应用，提出了基于信噪比的灰度级别划分方法；结合阵列信号处理、图象处理技术，本文引入了子带峰值能量检测算法、图象边缘检测算法，进一步提高了声纳检测性能；基于面向对象的程序设计方法，设计了声纳显示平台软件，为模拟声纳显示、检验声纳信号显示性能提供了仿真环境。 - The technology of very low bit rate for hf ( high frequency ) communication means that , one technology of ecm ( electronic counter measures ) resistant communication is developed for low bit data message exchange in the time of battle which data communication is destroyed by electronic disturber . it is regarded by armies in the battle of information , because that it can overcome the very low snr ( signal noise ratio ) , very high narrow - band interference and multipath with maxium delay of fifty millisecond
短波最低限度通信技术是在战时强电磁干扰情况下能实现保证最低限度的数据报通信的一种抗干扰通信技术。由于其能有效的克服极低信噪比、较强的窄带干扰和几十毫秒的多径，在信息战中受到各军高度重视。
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