In the non - coaxial bwo of l - band , the radius of the slow - wave structure is very large , and the volume and weight of the guiding - magnetic system are also very large . thus , the non - coaxial bwo of l - band is bulky and lumbersome and is inconvenient for real application 若采用非同轴相对论返波振荡器实现l波段的微波输出,则要求慢波结构的平均半径很大,导引磁场系统的体积和重量会变得较大,这给器件的小型化带来了很大的困难。
And then the theoretical performances of these algorithms are analyzed . finally , these algorithms are applied in l - band polarimetric data obtained by sir - c system . the calibration results of every algorithms and the comparison of these results are given in the paper 然后再分别从理论上论述了它们的性能，最后对sir - c获取的l波段多极化数据分别应用这些算法进行定标实验，对实验结果进行比较，从实验中研究这些算法的性能。
The relative development mature ( uses the l wave band ) face the digital audio frequency service satellite numeral audio frequency broadcast technology beginning , because designs aims at the mobile subscriber , has solved the mobile subscriber receive numeral audio frequency broadcast problem well 相对发展成熟的面向数字音频服务的卫星数字音频广播技术（使用l波段） ，由于设计之初就针对移动用户，较好地解决了移动用户接收数字音频广播的问题。
Studies show that the radius of the coaxial l - band bwo can be smaller than that of the non - coaxial l - band bwo . the coaxial bwo of l - band can be very compact and convenient for real application . so investigation on the compact coaxial l - band bwo is of great interest to the high - power microwave field 研究表明同轴相对论返波振荡器可以在相互作用区半径不大的情况下较容易地实现l波段的微波输出,对研制重量轻、体积小的紧凑型l波段返波振荡器有重要的实际意义。
Meanwhile a valuable conclusion that general cylindrical box type windows with dielectric disks made of al2o3 ceramic can be used to transmit cw of higher power than 120kw and workable relative bandwidth may achieve about 14 % in l band , is made by calculated results of some typical examples 同时，通过计算一些典型的实际问题得出了一个具有重要价值的结论：在l波段，采用al _ 2o _ 3陶瓷窗片的普通圆柱盒型窗可用于传输120kw以上的高功率连续波，并且具有14左右的可工作相对带宽。
In chapter 2 , first give the theory of phased array radar . second introduce the analog t / r module and digital t / r module . third discusses some key technology of wide band digital t / r module , including ddws technology and quadrature modulate technology . at last present a scheme of l bandwide banddigital t / r module 第二章首先介绍了相控阵雷达系统的组成和工作过程,其次介绍了模拟t / r组件和数字t / r组件的组成,然后介绍了宽带数字t / r组件的关键技术,包括:直接数字波形产生技术和正交调制技术,最后提出了一种l波段宽带数字t / r组件的框图。
By utilizing hi - bi fiber loop mirror and fiber polarizer to control the intracavity polarization state , a multi - wavelength erbium - doped fiber laser by exploiting phb ( polarization hole - burning ) is realized . we have experimentally achieved four - wavelength or five - wavelength stable lasers with wavelength spacing of less than 2nm 实验上得到了两组间隔分别为3 . 44nm和1 . 56nm的l波段双波长激光,而且通过调整偏振控制器还得到的由1599 . 28nm ~ 1605 . 84nm的五个单波长激光。
Then , detail discusses were given on . finally , on the basis of above analysis and research , by comparing various design methods , a l band agile frequency synthesizer with 256mhz bandwidth and 1mhz resolution was designed , whose switching time was within 4 us . however , the spur performance is to be improved 最后,在对各种捷变频技术综合分析和研究的基础上,经过反复的方案比较论证,设计了一个l波段256mhz带宽,步进为1mhz的捷变频频率合成器,捷变时间在4 s以内,不过杂散指标还有待进一步改进。
The third , some groping researches are made on broadband coaxial line filter output circuit of klystron . a broadband output circuit - mode four coupling slots double - gap output cavity loaded with coaxial filter , which has a workable relative bandwidth bigger than 14 % and fits in with l - band multi - beam klystron , is designed . meanwhile some analysis of its stability and peak power capacity is made 第三，对速调管同轴线滤波器宽带输出回路进行研究和探索，设计出了一个适合用于l波段多注速调管、相对带宽超过14的四耦合槽模强耦合双间隙腔加载同轴线滤波器输出回路，并对其稳定性和峰值功率容限做了一些分析。
It is a quite complicated system and involves many fields : accelerator physics , microwave electronics , vacuum physics , low temperature physics and etc . based on this facility , there are some physics issues " analysis and numeric simulation on the accelerator in this dissertation 中物院应用电子学研究所的30mevlinac是为fel实验建成的国内第一台l波段驻波腔加速结构linac ，它涉及到加速器物理、微波电子学、真空物理学、电子学和控制学等多种学科，是一个非常复杂的系统。
