The results show that the peak intensity of super - gaussian optical pulse becomes higher at the beginning , and the tail experiences a process of strengthening , and then weakening , which are different from gaussian optical pulse 数值模拟的结果表明,超高斯脉冲的波形演变和高斯脉冲有所不同,不但峰值能量经历了一个上升的阶段,而且拖尾振荡在初始阶段也经历了一个增强减弱的过程。
In the end , a new reliale indicator , energy peak , is found to used to estimate damage . its three parameter : peak time , peak frequence and peak power are also evaluated . this study improves monitoring equipment in intelligence , low power dissipation and security 作者最后利用脊髓在受不同程度损伤下的脊髓诱发电位的时频分布图,比较时频分布和时域上的各参数的变化,找到了新的损伤判定的特征指标:峰值能量,及其三个参数:峰值时间、峰值频率和峰值功率。
Firstly , introduce the design of sonar display , trace - to - trace correlation and gray scale display , develop a new method of gray scale based on signal noise ratio . and next , discuss array signal processing and image processing in order to improve the display . finally , develop a software of sonar display simulator based on object oriented programming , with which the sonar display console is simulated and the performance of sonar signal is tested 本文工作围绕如何提高声纳显示效果,介绍了声纳显示屏幕的设计方案,论述了“迹迹相关”技术、灰度显示技术在声纳显示中的应用,提出了基于信噪比的灰度级别划分方法;结合阵列信号处理、图象处理技术,本文引入了子带峰值能量检测算法、图象边缘检测算法,进一步提高了声纳检测性能;基于面向对象的程序设计方法,设计了声纳显示平台软件,为模拟声纳显示、检验声纳信号显示性能提供了仿真环境。
The results show that wavelength locates in gain zone of semiconductor optical amplifier , and have higher peak power and proper time delay between the two pulses for the second order super gauss control pulse in semiconductor optical amplifier . a high quality amplified signal pulse can be achieved . the chirp can be reduced notability by using cascading soa in cross gain modulation based on soa , and the distance and the peak power of conversion optical pulse can be increased notability , and we can let down the demand for wavelength based on xgm in soa and enhance the flexibility of wavelength conversion 我们应用二阶超高斯光脉冲与高斯信号脉冲同时注入soa和应用soa与非线性光学环镜( nolm )相结合的方案来对信号脉冲进行压缩整形,模拟显示,在调节系统合适参数的情况下,波长位于soa增益区的二阶超高斯控制光脉冲在具有较高的峰值功率和适当时延下输入soa时,最后可以得到放大的高质量超短信号光脉冲;在基于soa的交叉增益调制( xgm )全光波长转换中,采用级联的soa能有效地使反转光脉冲的频率啁啾得到有效降低,波长向下转换的距离和反转光的峰值能量都得到明显提高,降低了利用交叉增益调制( xgm )波长转换中对波长精度的要求,从而提高了波长转换的灵和性。
峰值: peak value; crest value; ape ...能量: energy; amount of energy非峰值能量: off peak energy; off-peak energy峰值能量峰: peak energy峰巅能量,峰值能量: on-peak energy峰值能: peak energy非峰值电能量: off peak energy峰值放电能量: peak discharge energy能量密度峰值: energy density peak峰值: [电学] peak value; crest value; apex; summit; spike; floodtide; crest单位产值能耗: energy consumption per unit of output value加工增值能力: processing capability能量: 1.[物理学] energy; amount of energy 能量转化 energy conversion2.(能力) capabilities; capacity; 能量不灭 conservation of energy; 能量不灭定律 law of conservation of energy; 能量交换 energy exchange; 能量均分 equipartition of energy; equipartition; 能量平衡 [生理学] energy balance (能量收支); 能量贮存 energy storage; 能量转移 energy transfer 峰值至峰值: peak-to-peak value颠峰值: hump峰 峰值: peak to peak value峰峰值: peak to peak value; peak-to-peak value; vp-p峰值表: peak meter; peak value meter峰值场: peak field峰值带: peak strip峰值点: peak point峰值级: peak level峰值计: crest meter; peak meter峰值区: plvi峰值线: peak level