Real-time Acousto-optic Spectrum Analyzer Using Hybrid Integration;
混合集成实时声光频谱分析器
Based on the spectral correlation theory of CS signal,a cyclic spectrum detection method of SS signal using acousto-optic(AO) signal processing technique was presented.
基于循环平稳随机信号的谱相关理论,提出了一种采用基于声光信号处理技术的扩频信号循环谱检测方法。
In this paper a window function acousto-optic correlator which includes one AOD is given.
介绍了一种只使用一个声光器件的窗口函数声光相关器,它可实现滤波片的窗口函数与电信号的震幅调制函数之间的相关运算,对由单载频矩形脉冲雷达信号与无调制随机杂波干扰组成的模拟回波信号进行了抗干扰实验,实验结果表明,当雷达信号脉宽为2μs时,相关增益达到15dB。
Study of the Photoacoustic Spectroscopy on the Phosphatizing of the Surface of Steel;
钢铁表面磷化过程的光声光谱研究
Sensitive wavelength-modulated photoacoustic spectroscopy with DFB diode laser;
灵敏的基于分布反馈式半导体激光波长调制光声光谱(英文)
Measuring liquid concentration with ultrasonic grating;
用超声光栅仪测量液体浓度
Simple study method for ultrasonic grating experiment and its Doppler frequency shift;
超声光栅实验及其多普勒频移的一种简单研究方法
By measuring the change of ultrasonic grating spacing,which is caused by the change of consistency,the function about them will be regressed and the consistency will be measured.
介绍了一种利用超声光栅测透明液体浓度的方法。
Study on the Mechanism of Sonophotocatalytic Degradation of Phenol in Water;
本文考察了声光催化技术降解水中苯酚的降解效率,测定了超声波联合光催化降解苯酚的主要中间产物,初步探讨了声光催化降解苯酚的反应机理。
Research on linear scale acoustooptic modulation driving source;
一种线性声光调制驱动电源的研制
In this system,more Doppler signals are received and more space resolving power are achieved because of adopting Gaussian beams focus and lens with large diameter as well as acoustooptic modulation technology and lock-in amplifier used to improve SNR.
为了进一步提高地震检波器的指标 ,研究了激光多普勒测量方法和微弱信号检测技术等 ,设计出了一种LD做光源的差动式激光多普勒检波系统 ,此系统采用高斯光束聚焦、大口径透镜接收 ,能接收到很强的多普勒信号 ,并且具有高的空间分辨力 ,同时 ,采用声光调制技术及锁相放大技术 ,提高了信号的信噪比 ,其结构简单、紧凑 ,装调方便 ,光能利用率和空间分辨力高 ,可测频率范围为 0 。
The principal and design of a linear gray scale acoustooptic modulation driving source by linear compensation is introduced in this paper.
介绍一种线性灰度声光调制驱动电源的原理、设计及试验结果。
The Experiment and Numerical Simulation Research on Truing and Dressing of Bronze-bonded Diamond Grinding Wheels by Acoustic-optic Q-switched Nd:YAG Pulsed Laser;
声光调Q Nd：YAG脉冲激光修整青铜金刚石砂轮试验及仿真研究
In view of the present status of sound and light alarm devices, the authors propose a new way which uses the programmable logic controller to process the sound and light alarm signals.
:就目前应用于程控装置中的声光报警器的现状 ,提出一种利用可编程控制器处理声光报警信号的新方法。
setting up alarm limit, sound and light alarm, dynamic display of the concentration, error checking and adjustment automatically, but also shut off gas pipe′s valve, alarm toward systemic computer and open the valve through button automatically.
文中介绍的一种智能型煤气监控系统具有报警限设定、声光报警、现场浓度动态显示、误差自动校正功能 ,而且具有自动关闭煤气管道阀门、向上位机报警、按键开启阀门的功能。
Meanwhile,it can arouse the sound and light alarm.
检测装置以气敏传感器为主体,利用气敏传感器采集车厢内有可能泄露的天然气信号,并实现声光报警。