spread-spectrum中文是什么意思

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中文翻译
造句

扩展频谱

spread vt. (spread) 1.伸开，伸长(手臂等)，展开 ...
spectrum n. (pl. -tra ) 1.【物理学】谱，光谱；波 ...
spectrum spread 频谱扩展
spread spectrum 扩频,扩展频谱; 展布频谱; 展频
direct sequence spread spectrum 直接序列扩频直接序列扩频; 直接序列散谱; 直接序列展频技术
dsssdirect sequence spread spectrum 直接序列扩展
frequency hopping spread spectrum 跳频扩频; 跳频展频技术
frequency-hopping spread spectrum 跳频扩展频谱; 跳频展频
hybrid spread spectrum 混合扩频
spread spectrum communication 扩频通信; 微波扩展频谱通信
spread spectrum communication system 扩展频谱通信系统
spread spectrum modulation 扩展频谱调制
spread spectrum modulation ssm 扩频调制
spread spectrum modulation technique 展布频谱调制技术
spread spectrum multiple access 扩展频谱多址; 展布频谱多址
spread spectrum pseudo noise 扩展频谱伪噪声
spread spectrum radio 展频无线电
spread spectrum random access 扩展频谱随机选址
spread spectrum signal 扩散频谱信号; 扩展频谱信号
spread spectrum systems 分散光谱系统
spread spectrum technique 扩展频谱技术; 展布频谱技术
spread spectrum titransmission 展布频谱传输
spread spectrum transmission 宽频带传输; 扩展频谱传输; 展开光谱传输
spread-spectrum communications 传播光谱技术
spread-spectrum technology 展频技术

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例句与用法

The algorithm adopts the different coding and decoding way from the spread - spectrum cdma ( code division multiple access ) system , it can use the existing tt & c equipment , to solve the task of multi - object trace , and the jam of many users working at the same time by means of the spread - spectrum adaptive feedback filtering algorithm
该算法采用与常用的扩频码分多址体制不同的编码方法和解算方法，可依靠现有的测控设备，应用扩频自适应反馈滤波算法，有效完成对多目标的测控任务，并可成功解决多用户冲突问题。
In addition , hybrid spread - spectrum communication system is propitious to enhance anti - jamming performance of the system that is make up of direct sequence ( ds ) and frequency hopping ( fh ) , and it can satisfy the require of anti - jamming of systems . it concentrate their virtue and overcome shortage in single spread spectrum style . this paper discusses the aspect in detail
另外，将扩频技术中应用最广泛的两项技术直序扩频( ds )和跳频( fh )结合在一起，构成混合扩频通信系统，有利于提高系统的抗干扰性能，更能满足系统抗干扰的要求，而且将跳频系统和直扩系统的优点集中起来，克服了单一扩频方式的不足。
Circular symmetric spread spectrum digital image watermarking using chaotic sequences as the watermark takes advantage of the discrete fourier transform properties and spread - spectrum communication techniques to embed a circular symmetric watermark in the frequency domain . the watermark can be detected without the presence of the original image even when the watermarked image suffers geometrical attacks such as translation , rotation and scaling . experimental results show that the proposed scheme has good transparency and highly good robustness to geometric transformations
基于混沌序列的圆对称扩频水印方案是以实值混沌序列作为水印，根据离散傅立叶变换的特性并结合通信上的扩频技术，将一圆对称水印嵌入到了图像的频域中，且即使图像遭受了平移、旋转、缩放等几何攻击检测水印也不需要原图像。
It consists of three main parts : in the first part , we analyse the effect of multipath on code - tracking loops of receivers in spread - spectrum ranging systems . first , we establish the model of received signals with the present of multipath through the presentation of multipath ’ s characters . then , we analyse the theory of delay lock loop ( dll ) , based on which we derive the tracking error of dll caused by multipath
首先通过对多径信号特性的分析得到存在多径时的接收信号模型,然后在对扩频测距系统的延迟锁定环路( delaylockloop )工作原理的分析的基础上,阐明了多径存在时码跟踪环路产生误差的机理。