spectrum spread造句
例句與造句
- Research on spectrum spreading technology based on a local radio intranet
無線局域網(wǎng)擴頻技術研究及實現(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用面臨非常復雜的雜波環(huán)境,雜波功率很強,載機的平臺運動效應使雜波譜展寬。 - 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)。 - It's difficult to find spectrum spread in a sentence. 用spectrum spread造句挺難的
- 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,采用較低的重復頻率,但會存在多普勒模糊,地雜波譜擴散到整個多普勒域。