spectrum spreading中文是什么意思

發(fā)音:

中文翻譯
造句

頻譜擴散

spectrum n. (pl. -tra ) 1.【物理學(xué)】譜，光譜；波 ...
spread vt. (spread) 1.伸開，伸長(手臂等)，展開 ...
spectrum spreading code sequence 頻譜擴展碼序列
spectrum spreading factor 頻譜擴展因數(shù)
spreading 就偵察線散開; 跨期買賣；跨價買賣; 擴展; 擴張; 拉布; 使藥液能散布; 套期圖利：同時買進與賣出相關(guān)期貨合約以獲取價差利潤的各種套利方式; 涂布; 展寬撒布接長攤鋪套期圖利噴散敷敷涂分散風(fēng)險蔓延加寬焊道
a spectrum of 連續(xù)的，連串的
spectrum n. (pl. -tra ) 1.【物理學(xué)】譜，光譜；波譜；能譜，質(zhì)譜。 2.【無線電】射頻頻譜；無線電(信號)頻譜。 3.【心理學(xué)】(眼睛的)余像；殘像。 4.〔轉(zhuǎn)義〕范圍，幅度；(連續(xù)的)系列。 an absorption spectrum 吸收(光)譜。 a bright line spectrum 線狀光譜。 an optical spectrum 光譜。 a solar spectrum 太陽光譜。 a wide spectrum of opinion 意見的不同幅度甚大。
spreading rate spreading capacity 涂布率
angular spreading 角傳播; 角擴散; 角擴展
asymmetric spreading 不對稱擴張
axis of spreading 擴張軸
backarc spreading 弧后擴張
band spreading 帶狀撒布; 頻帶擴展; 頻帶散布; 譜帶擴展
beam spreading 束散
binder spreading 粘合劑灑布
blanket spreading 墊帶刮涂
brush spreading 刷涂
concrete spreading 混凝土平倉
continental spreading 大陸擴張
crustal spreading 地殼擴張
cylindrical spreading 柱面擴展
direct spreading 直接蔓延
double spreading 兩面貼膠; 雙面涂膠
dust spreading 撤巖粉
even spreading 均勻撒布

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例句與用法

Research on spectrum spreading technology based on a local radio intranet
無線局域網(wǎng)擴頻技術(shù)研究及實現(xiàn)
But airborne radar will face highly complicatied clutter environment . the complexities of clutter back ground mainly embody in large amplitude interference of ground clutter , clutter spectrum spread caused by platform movement effect
但由于機載雷達的應(yīng)用面臨非常復(fù)雜的雜波環(huán)境,雜波功率很強,載機的平臺運動效應(yīng)使雜波譜展寬。
Adaptive interference suppression can improve further the anti - interference capacity of spectrum spreading ( ss ) systems , reduce the requirement of system processing gain , and thus is important to military communications system
自適應(yīng)干擾抑制能進一步提高擴頻通信系統(tǒng)的抗干擾能力，降低對處理增益的要求，因而具有重要的軍事意義。
When signals pass high power amplifier , they would be distorted in amplitude and phase , leading to spectrum spread and distortion of in - band signals , both of which would weaken performance of the whole system in turn
在無線通信中,信號在通過高功率放大器時會產(chǎn)生幅度和相位失真,造成頻譜擴展以及帶內(nèi)信號畸變,導(dǎo)致整個系統(tǒng)性能的降低。
This dissertion majored in dicussing the signal source and signal transmitting channel ’ s code and decoding of spectrum spread radio station under the concept of the software wirelss radio . the author ’ s main work and new ideas are listed blow : 1
本文主要討論的是在軟件無線電的構(gòu)架下討論和實現(xiàn)跳擴頻電臺的語音編解碼以及信道上的編碼和解碼的理論和實現(xiàn)。
The different transmit and receive diversity schemes of wcdma are given out in the fifth chapter , and pay much attention to stbc application in wcdma specially , compared the sequence of spectrum spreading and stbc , give out the conclusion : spectrum spreading firstly is better than later
特別針對空時編碼在wcdma中的應(yīng)用作了重點研究,對擴頻和空時編碼的先后順序進行了比較研究,得出了擴頻在前要優(yōu)于擴頻在后的結(jié)論。
1 ) the ground clutter is very strong when radar works in its down - look mode . 2 ) the clutter has the character of space - time coupling and the clutter spectrum spreads due to the movement of platform . 3 ) the lower repeat frequency results in doppler blur and the clutter spectrum spreads in the whole doppler domain
地面動目標(biāo)檢測的最大難點： 1 )雷達下視時地雜波特別強; 2 )由于平臺運動，地雜波存在著空時耦合，雜波譜展寬； 3 )為避免距離模糊，采用較低的重復(fù)頻率，但會存在多普勒模糊，地雜波譜擴散到整個多普勒域。

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