repeat frequency造句
例句與造句
- Its repeated frequency was 1khz with 20us width of pulse
?第四部分是對(duì)線性調(diào)頻信號(hào)源測(cè)試和評(píng)估。 - They are the property of sum and difference beams , the errors of the elements and channels and different pulse repeating frequency ( prf )
這些因素包括和、差波束的特性、陣元和通道的誤差、不同的脈沖重復(fù)頻率( prf ) 。 - The hollow lensduct coupling system was applied to the design of 10j diode pump repeated frequency solid state laser system
將研究得出的空心透鏡導(dǎo)管耦合系統(tǒng)及其設(shè)計(jì)方法應(yīng)用于10j級(jí)二極管泵浦重復(fù)頻率固體激光系統(tǒng)的設(shè)計(jì)中。 - The system scheme of 10j repeats frequency dpssl system was briefly analyzed , and the transmission of the laser in the system was simulated by sg - 99 software . the multi - pass scheme of the disk amplifiers was confirmed
簡要分析了10j級(jí)重復(fù)頻率dpssl的系統(tǒng)結(jié)構(gòu),并利用神光99軟件對(duì)系統(tǒng)光傳輸進(jìn)行模擬,確定了片放級(jí)多程放大結(jié)構(gòu)。 - Radar altimeter is a kind of very important microwave sensing instrument for observing the earth , and there are a lot of key technologies involved in the high resolution spaceborne radar altimeter ( hrsbralt ) . the principle of hrsbralt , the acquisition and track methods , the if simulation , the closed loop internal calibration method , the pulse repeat frequency ( prf ) design , and the ocean - land compatible altimeter design are studied in this dissertation
雷達(dá)高度計(jì)是一種重要的微波遙感儀器，本文就高分辨率星載雷達(dá)高度計(jì)的工作機(jī)理、跟蹤方法、大時(shí)帶積在軌閉環(huán)內(nèi)校準(zhǔn)以及海陸兼容等內(nèi)容進(jìn)行了深入的研究，具體包括以下八個(gè)方面的內(nèi)容： ( 1 )深入研究了星載雷達(dá)高度計(jì)的工作機(jī)理，并對(duì)典型雷達(dá)高度計(jì)系統(tǒng)進(jìn)行了分析。 - It's difficult to find repeat frequency in a sentence. 用repeat frequency造句挺難的
- 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(dòng)目標(biāo)檢測(cè)的最大難點(diǎn)： 1 )雷達(dá)下視時(shí)地雜波特別強(qiáng); 2 )由于平臺(tái)運(yùn)動(dòng)，地雜波存在著空時(shí)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(huì)存在多普勒模糊，地雜波譜擴(kuò)散到整個(gè)多普勒域。 - Adjusting digital potentiometer in controlling circuits of sps and capacitor charging and discharging circuit separately with industry control computer ( icc ) , the peak value and repeat frequency of output pulse can be adjusted separately . controlling relays to choose different capacitors with icc , the width of output pulse can be adjusted
利用工控機(jī)分別調(diào)節(jié)開關(guān)式穩(wěn)壓電源控制電路和電容充放電控制電路中的數(shù)字電位器，就能分別調(diào)節(jié)輸出陡脈沖的幅值和重復(fù)頻率；利用工控機(jī)控制繼電器選擇不同的充放電電容，就能調(diào)節(jié)輸出陡脈沖的脈寬。 - Based on the requirement and target of the projects , firstly , pcf bragg grating are investigated theoretically and experimentally . moreover , the effects of filling high refractive index material ( nematic liquid crystal , nlc ) in pcfs on the transmission mechanism and propagation properties are studied by using plane - wave method and finite - element method ( fem ) , farther , several novel pcfs are proposed and designed . lastly , we propose and demonstrate a clad - pumped er3 + / yb3 + - codoped fiber laser , which integrate all performances of broad - band tunable wavelength , uniform output power spectrum , high repeat frequency and high average power to together
本論文選題于國家973 、 863以及國家自然科學(xué)基金等項(xiàng)目,結(jié)合課題的要求和主要目標(biāo),在對(duì)光子晶體光纖( pcfs )傳輸特性研究的基礎(chǔ)上,首先對(duì)光子晶體光纖光柵進(jìn)行了理論和實(shí)驗(yàn)研究;然后,采用平面波展開法和有限單元法分析了在光纖的空氣孔中填充高折射率液晶對(duì)光纖傳導(dǎo)機(jī)制和傳輸特性的影響,提出并設(shè)計(jì)了幾種新型光子晶體光纖;最后,提出并研制成功連續(xù)可調(diào)諧、輸出功率譜均衡的全光纖化、高功率包層泵浦鉺鐿共摻光纖激光器實(shí)驗(yàn)樣機(jī)。 - Some functional blocks are set up with the basic block provided by spw , and some is programmed with c language . after the simulation of pulse compress mtd radar , the effect of some jamming signals is analyzed . especially , the jamming signal of high pulse repeat frequency is discussed
完成脈沖壓縮mtd雷達(dá)的建模以后，又討論分析了幾種常見的干擾式樣，如噪聲調(diào)幅干擾、噪聲調(diào)頻干擾等，著重討論了高重頻噪聲調(diào)頻脈沖信號(hào)的干擾效果，并對(duì)幾種不同形式信號(hào)的干擾效果進(jìn)行了比較和分析。 - These parameters include bandwidth , carrier frequency , signal duration and signal repeat frequency . according to the parameters , we select the method direct reading the stored digital waveform to realize the waveform generation in the third part , the waveform generator system control including communication control , timing control and address generation is designed
第二部分研究了線性調(diào)頻信號(hào)參數(shù)間的內(nèi)在聯(lián)系，包括信號(hào)帶寬、中心頻率、持續(xù)時(shí)間及重復(fù)頻率等，設(shè)計(jì)了信號(hào)參數(shù)，并在前人研究的基礎(chǔ)上選擇了波形存儲(chǔ)直讀法作為信號(hào)產(chǎn)生方案。 - It has been presented in this dissertation that using model of q modulated er - glass laser , through replacing typical number of er - doped fiber and single mode fiber into the model , then the theoretical model of self - q - switching by sbs was established . by emulating experiment , the peak value of output power , repeating frequency , width of pulse have been calculated . the data was calculated repeatedly when the length of er - doped fiber changing
將摻鉺光纖和單模光纖的典型值數(shù)據(jù)代入該模型中,進(jìn)行仿真實(shí)驗(yàn)研究得出sbs自調(diào)q光纖激光器輸出峰值功率、脈寬、重頻等數(shù)據(jù),并在改變摻鉺光纖長度的情況下,再次進(jìn)行仿真實(shí)驗(yàn),對(duì)上述輸出結(jié)果進(jìn)行了分析。