脉冲展宽特性是激光回波的重要特性，其影响到回波接收信噪比和测距精度。
As an important feature, the characteristics of echo stretching affects SNR of received laser echo signal and ranging accuracy.
根据三脉冲激光雷达回波信号的特点，对信号进行差分滤波和匹配滤波处理，信噪比提高约1.5倍；
According to laser radar echo characteristic, the difference filter and the match filter were adopted. As a result, the SNR is advanced about 1.5 times.
为解决低信噪比下激光微弱回波的检测问题，提出了一种新的小目标检测算法。
To solve the laser weak echo detection under the clutter background, A dynamic programming(DP) technique has been developed for the detection of weak targets.
本文给出了距离选通光子计数系统的信噪比模型并讨论了激光回波与探测器选通门之间的同步问题。
This article provides the signal-to-noise ratio module of the range-gating photon counting system and discusses the synchronization between the laser echo wave and the detector gate.
针对运动目标，在考虑激光雷达方程、信噪比和自动增益、成像指标、噪声、图像处理等模块的基础上，对脉冲相干成像激光雷达进行了运动目标的成像模拟。
On the basis of considering the modules of laser radar equation, SNR and AGC, imaging demand, noise and imaging proces, we make a simulation of pulsed coherent imaging laser radar for moving target.
从理论上分析了利用光栅实时测量被动入射激光波长的能量分布及信噪比，给出了计算公式及误差分析。
The paper analyses the energy and signal noise ratio (SNR) with grating to measure passive laser wavelength in real time, provides the theoretical basis for measurement and error from the method.
根据激光对潜通信系统的信道特性和探测器特性，推导并简化了输出信噪比公式。
Based on the channel and detector characteristics of a submarine laser communication system, the output equation for the signal to noise ratio is derived and simplified.
利用激光雷达方程，信噪比模型和可探测概率模型，对两种技术体制的激光器的技术参数进行分析，最后结合国内技术水平分析，确定了激光发射机的各项指标。
This thesis emphasizes on solving series key techniques in theory analysis, simulations and prototype development, the laser transmitter prototype of range-gated imaging system has been developed.
仿真与实际测试结果表明，该方法能有效提取远距离微弱激光脉冲回波信号，从而提高系统信噪比，扩大了系统原有的测程。
Simulation and actual test result shows that the new arithmetic could detect weak laser pulse signal effectively, increase the SNR and expand measuring range of laser range finder.
研讨激光测距仪的信噪比和激光发散角如何选取最佳值的问题。
The problem how to select optimum of signal-to-noise ratio and laser beam divergence for laser range-finder is studied.
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.
文章针对激光弱小回波信号的低信噪比，提出了运用数字信号处理技术对回波信号进行处理的方法，并进行了一系列仿真和计算。
In the paper the methods to process weak echo by using DSP technology based on low SNR of laser weak echo are presented. And the methods are simulated and calculated.
前置放大器是影响APD激光脉冲探测系统好坏的关键因素，前置放大器的信噪比决定了整个探测系统的信噪比优劣。
Preamplifier is one of the key factors which affect APD detection system of laser pulse. The signal-to-noise ratio(SNR) of preamplifier determines the SNR of whole detection system.
高信噪比在超短脉冲强激光与物质相互作用中有重要意义。
High signal-to-noise ratio have important meaning in the ultra-short laser interacting with material.
血清不加抗凝素且使用低功率的激光可以得到重现性、 信噪比都较好的谱图，以便利用光谱法诊断疾病。
The reappearance and sign-noise ratio of laser Raman spectra of serum are better with the lower laser power and without heparin, which is a chief condition for the diagnosis of breast cancer.
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;
文章针对车载式激光告警器探测距离，分别对激光告警接受机的信噪比和灵敏度进行了分析计算，为系统设计和研制提供依据。
The reconnaissance distance of vehicular laser passive reconnaissance warning device was discussed in the paper. The signal to noise ratio and sensitivity of the laser detection were analyzed.
研究结果表明：在低信噪比条件下，激光二极管雷达测距数据的离散分布将明显偏离正态分布；
The results show that:in the low SNR conditions, the discrete distribution of the laser diode radar ranging data will significantly deviate from the normal distribution;
利用二元光电探测器接收激光脉冲信号 ，然后根据互相关检测的原理设计了相关处理电路对接收到的信号进行处理 ，使其信噪比 （SNR）得到改善。
We receive the laser pulse signal with the binary photo-electric detector, deal the signal with the circuit designed on the basis of correlation detection to improve SNR.
实验结果表明，将阿达玛变换应用于激光光谱测量，在不增加测量次数的情况下，可以有效地提高系统的信噪比。
The experimental result indicates that Hadamard transform is applied in spectral measurement, and the SNR can be improved effectively when the measurement times are not increased.
详细讨论了这种方法的实现方案，并对方案中的激光发射功率、望远镜口径以及脉冲宽度对距离精度及信噪比的影响进行数值模拟。
The detailed principle of detection is presented. The relationship of range accuracy and signal-to-noise ratio with laser power, telescope diameter, and pulse width are numerically simulated.
详细讨论了这种方法的实现方案，并对方案中的激光发射功率、望远镜口径以及脉冲宽度对距离精度及信噪比的影响进行数值模拟。
The detailed principle of detection is presented. The relationship of range accuracy and signal-to-noise ratio with laser power, telescope diameter, and pulse width are numerically simulated.
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