寬頻帶間隔 的英文怎麼說
中文拼音 [kuānbīndàijiāngé]
寬頻帶間隔
英文
broad band space-
The echolocating calls in the state of fly were compared with those in the state of hang in two kinds of bats, r. yunanensis and h. pratti, and the doppler compensation effect was described. the analyzing result indicated that the frequency in hang was higher that that in fly, the duration and interpulse duration in hang were longer than those in fly, and the fm bandwidth in hang was narrower than that in fly
比較了雲南菊頭蝠和普氏蹄蝠飛行狀態和懸掛狀態下的回聲定位聲波，描述這2種蝙蝠的多普勒補償效應，懸掛狀態聲波頻率顯著高於飛行狀態，聲脈沖時間和間隔時間顯著長于飛行狀態， fm帶寬窄于飛行狀態。The millimeter wave diplexers used in the ka - band satellite communications are investigated. these diplexers are of high working frequency, narrow passband and high selectivity, which demands the channel filters good performance
所研究的毫米波雙工器工作頻率高（接近40ghz ） ，收發通道帶寬窄、接收頻率和發射頻率間隔很小。Frequency diversity technique is effective in suppressing age if the frequency interval is big enough to remove off the correlation between the pulses transmitted by radar, wide - band mmw radar can satisfy the requirement but conventional microwave radar can t
頻率分集技術抑制目標角閃爍的有效性，取決于去除脈間相關性的性能，即要求雷達發射信號必須有較大的頻率間隔，寬帶毫米波雷達正好滿足了這一常規微波雷達不能滿足的要求。Broad band space
寬頻帶間隔When estimating frequency with the fft, the resolution and accuracy are limited by the observation time of the signal, i. e., a / = it. the level measurement accuracy of the fmcw radar is determined by the bandwidth of the transmitted signal
掃頻帶寬1 . 5ghz ， fft兩條譜線的間隔對應的距離為10cm ，而液位測量系統的精度要求達到1mm ，因此直接利用fft頻譜估計距離顯然無法達到精度要求。The detailed research contents are as following : ( 1 ) based on molecule spectrum theory and experimental data, presented are fine parameters of ch4 combined frequency band v2 + v3 and wide frequency band 2v3, including absorption spectrum central wavelength, line space, intensity distribution, line type and line width. these fine parameters have played solid foundation for measurement wavelength selection, and effectively eliminated cross sensitivity
主要研究內容如下： （ 1 ）應用分子光譜理論和實驗數據給出了甲烷氣體在聯合帶v2 + v3和泛頻帶2v3的精細參數，包括吸收線的中心波長、吸收線間隔、吸收線強度分佈、吸收線線型和線寬，為系統設計選擇合適波長提供依據，消除交叉敏感。The most important specification of the level measurement system is the accuracy. the range measurement accuracy of a fmcw radar is strongly affected by the stability and the linearity of the frequency modulation. thus the vco ' s nonlinearity correcting method is discussed
利用fft （ dft ）頻譜估計頻率精度受fft頻率量化（即譜線之間的間隔）的限制，對應的fmcw雷達的距離估計精度則受掃頻帶寬的限定。Simulation results demonstrate theoretical derivation is correct and both sequences can be used in communication. based on the presented ds / sfh communication scheme, and employing msk as fh spread spectrum modulation, the performance is studied n the presence of partial band multitone jamming and additive white gaussian noise ( awgn )
根據所提出的混合ds sfh擴頻通信系統方案，採用msk相干調制，在假設直接序列擴頻后信號帶寬等於跳頻間隔的情況下，推導了系統在部分頻帶多頻干擾和加性白噪聲下的誤比特率公式。分享友人