In this topic , an adc circuit and data - storage system for all digital ultra - wideband receiver was designed , and the ultra - wideband narrow pulse signal that is received is digitalized , using an ultra - high - speed a / d convertor 本课题设计了一个全数字化超宽带接收器的adc电路及数据存储系统。利用一个超高速的ad转换器,对超宽带窄脉冲信号进行数字化。
The result of simulation and test verified that this algorithm is simple to be carried out , and harmonics in output waveform are small , and neutral point voltage can be controlled very well , and narrow pulse problem is solved as well 仿真和实验结果表明，该方法实现简单，输出波形谐波含量小，中点电位得到很好的控制，并较好地解决了窄脉冲问题。
On the basis of improvement of a simple but effective three - level svpwm algorithm , a simple neutral point balancing and narrow pulse elimination algorithm without current sensor is proposed . and dead time is compensated in the algorithm also 本文在对一种简洁高效的三电子svpwm算法改进的基础上，提出一种无电流传感器的中点电位控制和窄脉冲消除方法，同时进行了死区的补偿。
To shorten charging time and improve charging efficiency , the circuit can change the charging electric current automatically according to real time voltage of the battery , and dispel the polarization phenomenon by narrowing pulse discharge in the whole course 该电路可根据蓄电池端电压自动改变充电电流大小，并通过全程窄脉冲放电消除了充电过程中的极化现象，缩短了充电时间，提高了充电效率。
Diode - pumped q - switch solid - state lasers have many advantage such as high efficiency , compactness , high stability , and long lifetime . high peak power , high repetition rate short - pulse can be obtained by high power diode pumped , which is used comprehensively in the field such as measuring , remote sensing , photoelectric resisting , medical et 激光二极管( laserdiode ,简称ld )泵浦的调q固态激光器具有结构紧凑、稳定性好、寿命长等优点，用大功率ld作为泵浦源，可以获得高重复频率、大峰值功率的窄脉冲激光，这在激光测量、光电对抗、激光遥感、激光医疗等领域有着非常广阔的应用前景。
Multi - mode optical fiber phase - conjugator is used as one possible method to improve beam quality of high - power ld - pumped solid - state laser for its merits of high fidelity , all - solidity , convenience and flexibility . up to now , using optical fiber phase - conjugator , more than 92 % fidelity but maximum reflectivity of just 60 % had been reported 为了改善高重复频率、窄脉冲的高功率dpl激光系统中由严重的热效应所降低的光束质量，采用光纤相位共轭器是可行的技术方法之一，并符合现代激光系统设计全固化和小型化的思想。
It is a novel short - distance wireless communication technique , in which data are transferred using non - sinusoidal pulses with very short duration , so it is fit for using in indoor environments which is a typical multipath environment . and it can be coexisted with the existing wireless communication systems at the same frequency band 超宽带通信系统利用纳秒至皮秒级的非正弦波窄脉冲传输数据,非常适合作为城区及室内密集多径环境下的应用,并且能够与现有的传统窄带系统共存。
