| 1. | In the design of the spll , srd takes the input of a crystal oscillator and generate very sharp and narrow pulses
在振荡器之后,本文加了一个缓冲放大器,它起到放大输出功率和改善频率稳定度的作用。 |
| 2. | Ultra - wideband ( uwb ) communication is a wireless communication technique , in which data are transferred using narrow pulses with very short duration
超宽带( ultrawideband )是近年来发展起来的无线电技术。它和传统无线电系统相比在很多方面都具有明显优势。 |
| 3. | The second reason is the nonlinear rectifier with a bulky capacitor in the input stage of the smps , which leads to a narrow pulse and rich harmonics
原因之二是开关电源的输入端采用二极管整流，后接较大的滤波电容，导致输入电流为一很窄的脉冲波，含有丰富的谐波分量。 |
| 4. | At the same time , the experiment of multimode crystal fiber to improve the beam quality of mopa dpl with high repetition rate and narrow pulse width were carried out in this paper
本文还开展了多模石英光纤应用于窄脉冲、高重复频率mopadpl系统改善光束质量的实验研究。 |
| 5. | The narrow pulses of uwb make it possible for some receivers to resolve the separate multipath streams and use multiple “ arms ” to lock onto the various reflected signals
由于超宽频具有短脉冲，某些接收机就可能解析出不同的多路径讯号流，并利用多个武器锁定不同的反射讯号。 |
| 6. | Radar emits wide pulse to ensure the distance , and gets narrow pulse by using corresponding pulse compression method when receiving . this is pulse compression
脉冲压缩是指雷达通过发射宽脉冲,保证足够的最大作用距离,而接收时,采用相应的脉冲压缩法获得窄脉冲以提高距离分辨率的过程。 |
| 7. | 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。 |
| 8. | 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。 |
| 9. | 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。 |
| 10. | Therefore , it is useful to make further study on heightener of reflectivity and applying in laser system with narrow pulse - width less than 30ns and high repetition rate more than 100hz for space - communication and laser - detect
而对光纤相位共轭器而言，关键问题是如何突破sbs反射率低于60的瓶颈，并应用到重复频率大于100hz 、脉冲窄于30ns的激光系统中获得较高的稳定性和较好的相位共轭效果。 |
