English translation for "c band"
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- c波段
Related Translations:
- Example Sentences:
| 1. | In terms of the pic simulation , the output power of 1 . 5gw at c band and 200mw at x band in milo have been obtained
用整体上移的办法增加高次谐波，通过对输出频率的选择，在x波段获得了250mw的功率输出。 | | 2. | The milo works at 500mw c band driven by a 400kv , 60ka electron beam has been done in experiment . a new coaxial - structure super - reltron was explored to develop a low - impedance high - power microwave tube
我们还对c波段milo进行了实验设计，理论结果为：在外加电压400kv ，电流60ka ，微波输出功率1gw ，目前实验已经达到了500mw以上的微波输出。 | | 3. | In this study , we demonstrate a technique using the multi - temporal c band hh polarized radarsat scansar data to estimate the relative soil moisture change . the experiment data from sgp97 covered a whole range of vegetation growing season and different type agriculture fields
研究证明，星载合成孔径雷达( sar )得到的地表后向散射系数与地表介电常数有直接相关关系，从而能够在水文模型要求的精度范围内有效提取地表土壤水分信息。 | | 4. | This subject comes from the project : c band low phase noise tunnable jumping frequency source in chengdu saiying science and technology co , . ltd . the frequency synthesis technology of pll + mixer is adopted in the final scheme . at first , the developing history of the frequency synthesis technology is reviewed . then direct frequency synthesis technology 、 pll frequency synthesis technology are introduced
本文首先首先简述了频率合成技术的发展历史,介绍了直接频率合成技术、锁相环频率合成技术、 pll +混频的频率合成技术的基本理论以及具体的系统设计中应该考虑的方面。 | | 5. | For parameter a , there is a close relationship exist between a ( 9 , sr ) in two different radar incident angle that can be expressed as : with considering the effects of soil texture , we get the final expression of the inversion model : where mv ( t1 ) , mv ( t2 ) is volumetric soil moisture content in two different temp , c , d is soil type related parameters , and v ( t1 ) , s ( t2 ) is coresponding bare soil radar backscattering coefficients . inversion results show that for the c band hh polarized radarsat scansar data with a range of incidence angle from 20 to 40 , the soil moisture change value can be derived with an acceptable accuracy using the above model . the temporal and spatial soil moisture change patterns are associated with rainfall and vegetation cover , as well as the soil hydraulic characteristics
利用最新发展的电磁波散射模型研究了不同植被覆盖地表雷达波对地表土壤水分的敏感性，建立了半经验植被雷达后向散射模型; 2 ) .研究发现在农作物等矮小植被覆盖地表，植被层直接后向散射与植被类型相关，且在植被生长期，雷达后向散射系数对植被含水量的敏感性要高于对植被高度变化的敏感性; 3 ) .解决了单参数雷达地表土壤水分反演问题中，雷达入射角和地表粗糙度的影响这一难点问题; 4 ) .利用土壤介电模型校正了不同土壤类型对反演地表土壤体积含水量的影响; 5 ) .在以上成果基础上，建立了完整的单参数雷达地表土壤水分变化探测反演算法，经地表验证，模型反演地表土壤水分变化值的精度为rmse = 0 | | 6. | Both of the numeric simulations and the experimentations indicate that the c band raman fiber amplifier can be satisfied with some gain flatness when numbers and wavelengths of pump are installed while powers of pump are arranged properly . the method of measuring fiber raman gain coefficient is adopted to other type
数值计算和试验上都证明了在合理地选取泵浦源的个数和波长的情况下，通过对各个泵浦功率配置的调整， c波段的拉曼光纤放大器可以满足一定的增益平坦度。 | | 7. | Finally , the production , which is designed and debugged all by myself , c band fine resolution low phase noise frequency synthesizer was introduced by module , including respective schedule , frequency distribution and phase noise experiment results . then whole circuit phase noise result , picture of spectrum with spur were presented , by which above theory was proved , analysis of the result was given , and the existing problem as well as methods to resolve it were motioned
论文最后对自己设计调试的样机c波段小步进低相噪频率合成器进行了分模块介绍,包括各部分的原理框图、频率分配和相噪测试结果,然后给出了整个样机的相噪、杂散频谱测试结果,对上面提到的理论进行验证,并对结果进行了讨论分析,提出了样机现存的一些问题和几点解决措施。 | | 8. | The radiation performance of the antennas is described in detail by clear physical pictures . based on the simulation results , the vlasov antennas work in c band are designed , include the vlasov antenna with single - reflector . at last , a second reflector is added to the single - reflector devise to narrow the beam further , and the antenna gain increased to 20 . 6db
为了提高天线性能,在vlasov辐射器的基础上,在辐射器的上方加了一个反射面,形成了第一种vlasov天线,结果天线的增益有了很大的提高,而且波束也变窄了很多,从而天线的性能有了明显改善。 | | 9. | The comparison between the results of calculation and measurement shows that the two results are in good agreement for the broad band antenna in the l band and the waveguide - coax converter of bj48 type used as antenna in the c band , with a difference of less than 0 . 7db , and that the two results also agrees well in the x band for the waveguide - coax converter of bj100 type used as antenna , with an error close to 1db only at few points in the given frequency range
比对结果表明: l波段(加脊天线) 、 c波段( bj48型波导同轴转换作为接收喇叭)的模拟结果与实测结果符合得较好,误差小于0 . 7db ;在带内, x波段( bj100型波导同轴转换作为接收喇叭)的模拟结果与实测结果比较一致,只在个别频率点处误差近1db 。 | | 10. | Secondly , basing on the theory of on - off gain of small signal , the raman gain coefficient for frequency shift between 0 . 5 and 20 thz of standard sigle mode optical fiber is measured by pump - probe method through a super luminescent diode ( sld ) as a broadband small signal probe source . thirdly , numerical simulation analysis of gain characteristic of raman fiber amplifier for c band wdm signal light is made according to the raman gain coefficient of the fiber measured before through target and four rank runge - kutta method . at the invariability of wavelength and maximum power of each of two pumps , schematic of powers of two pumps for best flatness on c band wdm optical gain was found out , at the same time , the factors of resulting in gain saturation is analyzed , too
本文首先应用经典的电磁理论对拉曼光纤放大器的工作机制进行了分析，然后，根据小信号理论推导出的开关增益求出了光纤拉曼增益系数的表达式，采用泵浦-探测波的方法，利用超辐射激光二极管( superluminescentdiode简称sld )作为探测光源，测量了所用标准单模光纤频移为0 . 5 - 20thz的拉曼增益系数，之后根据所测得的光纤的拉曼增益系数谱对应用该类光纤构成的放大c波段wdm光信号的拉曼光纤放大器的增益特性采用打靶法和四阶龙格- - -库塔进行了数值计算，在给定了两个泵浦光源的波长和最大功率后，找出了反向泵浦情况下使c波段wdm光源增益最平坦的两个泵浦的各自最佳功率，同时也分析了导致信号光饱和的原因。 |
- Similar Words：
- "c aw iiiuminating mask-c" English translation, "c aw multi-revitalizing serum" English translation, "c aw professional spot brightener" English translation, "c aw silky foaming milk" English translation, "c b stanworth" English translation, "c band radar transponder beacon" English translation, "c band tracking beacon" English translation, "c banding" English translation, "c bar spacer" English translation, "c barbtongue runeblade" English translation
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