讨论了基频光与倍频光间的信噪比关系及如何测试倍频光信噪比等问题。
What is the relation of the SNR of the fundamental and its frequency doubled laser and how to measure the SNR of the frequency doubled laser are discussed.
我们研究了DPASK脉冲的解调过程以及输入ask信号功率与光信噪比代价之间的关系。
The demodulation process of the generated DPASK pulses is investigated and the relationship between optical signal-to-noise ratio (OSNR) penalty and the input ASK power is presented.
并在掺杂铌酸锂晶体中获得了高信噪比，信号光增益高达1583倍的光像放大。
We obtain a optical image amplification with high gain factor of 1583 in doped lithium niobate crystals.
同时进一步分析了在大信号、高泵浦功率条件下高速光脉冲信号放大过程中的各种畸变特性以及放大的自发辐射对系统信噪比增益的影响。
The character of high speed light pulse distortion and the fluency of the amplified spontaneous emission on the SNR gain under high power signal and pumper are analyzed.
对于静态X光图像序列，帧间滤波技术是抑制噪声、提高信噪比最为有效的方法之一。
In static X ray sequence images, the inter frame filtering is the one of the best techniques of suppressing noise and improving signal to noise rate.
阐述了利用区组设计理论构造光正交码的方法，并分析了获取的地址码在系统应用中的信噪比和误码率。
Though the theory of blocks designing, enough amount of address code is provided firstly, and then applied performance in system was analyzed.
文中论述了光调制特性、微分增益（DG）、微分相位（DP）、信噪比（S/N）等重要问题。
The optical modulation characteristics, differential gain (DG), differential phase (DP) and signal-to-noise ratio (S/N) are described as well in this paper.
在接收系统中，引进窄带干涉滤光片，减少背景光的干扰，增加信号光透射率，改善信噪比。
In the receiving system, the narrow-band interference filter is introduced in order to reduce the background light, increase the signal transmission rate, and improve the signal-to-noise ratio.
提高光靶信噪比，有效地拣出信号，成为激光射击模拟器推广应用的重要课题。
It is a main subject to increase signal to noise ratio of light target and pick up signals effectively so as to diffuse laser shooting simulator.
理论与实践都证明这种新型光检测放大器信噪比较高，能对微弱的PIN光信号进行有效地检测和放大。
Experimental results show that a high SNR is obtained and a weak PIN optic signal can be detected and amplified effectively.
通过对这些物理因素进行分析，指出“切割波段”可有效提高信噪比，将高温目标识别出来，并通过液晶光阀予以技术实现。
By optimizing the initial image capture stage, using liquid crystal light valve to make a simple modification of the imaging system, the goal of high object recognition is achieved.
第二套系统采用的是基于半导体光放大器（SOA）的可调谐激光器做光源，有效的增加了光源的输出功率，提高了信噪比；
The second system is tunable laser light source based on semiconductor optical amplifier(SOA), light output power and signal-to-noise ratio are improved effectively;
第二套系统采用的是基于半导体光放大器（SOA）的可调谐激光器做光源，有效的增加了光源的输出功率，提高了信噪比；
The second system is tunable laser light source based on semiconductor optical amplifier(SOA), light output power and signal-to-noise ratio are improved effectively;
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