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XIANG Shiqing LOU Qihong DONG Jingxing MANG Yanping WEI Yunrong 《Chinese Journal of Lasers》1996,5(5):385-390
Generationof2-10nsExcimerLaserPulsebyOpticalSynchronizingWave-clippingXIANGShiqing;LOUQihong;DONGJingxing;MANGYanping;WEIYunr... 相似文献
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同步置换群的研究是置换群理论中的一个前沿课题.通过在有限域上定义广义Paley图,来讨论这类图的团数(clique number)和色数(chromatic number)相等的条件.然后证明构造的广义Paley图和一类仿射群的轨道图同构,进而讨论这类仿射群的同步性.在此基础上给出一类本原非同步群的构造. 相似文献
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时间同步系统是光电对抗设备中非常重要的配套设备之一,其精度的高低将直接影响光电对抗的战术效果。给出了一种以现场可编程门阵列(FPGA)器件为核心的高精度时间同步系统。此系统成本低廉,精度高,可以很好地满足应用要求,并已经成功应用于某光电对抗项目中。 相似文献
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A Weissenberg Rheogoniometer was used to study time dependent and time independent phenomena. For successful data recording, commonly used strip chart recorders and analog filters were replaced by a special synchronizing circuit and a microcomputer data acquisition system. The special circuit along with digital filtering techniques was able to remove a 1 KHz carrier frequency and 60 Hz noise from the signal without effecting the data signal. 相似文献
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A new optical coherence tomography system using a wavelength-scanning laser source is presented. The system has the advantage that the depth resolution can be controlled by the scanning range. In general, rapid scanning of the wavelength varies the output power of the laser source, and it is difficult to detect a weak signal of reflected light from the scattering object. By synchronizing the intensity-integrated detector with the variation, the dynamic range of the detection has been improved. To confirm the performance, tomographic imaging of biological tissues is demonstrated. 相似文献