By using silver nano-aggregates as SERS substrates instead of dispersed silver particles, a great improvement of SERS signal intensity is achieved. 通过利用银纳米粒子聚集体代替单分散的银纳米粒子作为SERS基底,SERS信号得到明显增强。
Measuring Method and Applying Circuit of Dispersed Frequency for Detecting Weak Capacitance Signal 微弱电容信号的离散频率测试方法及其硬件电路的实现
The compile the simulation arithmetic adopts S-function, and the actual programming of the algorithm adopts C language dispersed programming. Signal acquisition and control are developed under the development environment of CCS with the C language and modular programming. 算法的仿真采用S函数编程实现,算法的实际编程采用C语言离散编程实现,信号采集与主控系统的软件是在CCS开发环境下采用C语言编写的,采用模块化程序设计。
Result show that: the noise energy could be dispersed and the vibration signal characteristics could be highlighted by increasing the dimension of attractor track matrix ( the order of SVD) in the case of small signal noise ratio. 结果表明:在信噪比较小的情况下,通过增加吸引子轨迹矩阵维数(奇异值分解阶次)的方法,可以分散噪声能量,凸显振动信号特征。