Lock-in amplifying (LIA) is one of important means for weak signal detection.
锁相放大是微弱信号检测的重要手段。
The basic principle of stochastic resonance (SR) in weak signal detection was introduced.
阐述了应用随机共振对微弱信号进行检测的原理。
An implementation of the weak signal detection in the wideband strong interference is proposed.
提出了一种检测宽带强干扰中弱信号的实现方法。
In the data processing system, methods for Weak signal detection are adopted to improve the accuracy.
测试数据处理采用了一些微弱信号检测技术来提高信噪比，从而提高了该系统的检测精度。
The dynamic digital display sphygmomanometer is designed by using the technology of weak signal detection.
利用微弱信号检测技术，设计了动态数显血压计。
When exploring and researching on macroscopical and microcosmic world, the weak signal detection is needed.
己们反在探索研讨微观和微观世界中，常常须要检测微强信号。
Due to noise problem in the weak signal detection, the article talks about how to deal with noise in the end.
由于小信号检测存在噪声干扰的问题，最后还对噪声处理进行了讨论。
A method on weak signal detection in a stronger noise background based on high-order statistics is presented in this paper.
提出了一种利用高阶统计量对强噪声背景下的弱信号进行检测的方法。
Focusing on neural weak signal detection, this thesis presents the principle and practicable method to utilize SR for neural weak signal detection.
本文以神经弱信号检测为研究对象，提出了利用随机共振原理进行神经弱信号检测的基本思想及实现方法。
The system can realize the space signal processing and real time signal processing. It has been successfully applied in underwater weak signal detection.
该系统能够实时实现信号的空间处理和时间处理等，并在水下弱信号检测中得到应用，取得了良好的结果。
Firstly, the chaotic state of weak signal detection method was proposed, based on the inverted sawtooth map model and symbolic dynamics description methods.
首先，基于混沌理论中的倒锯齿映射模型，以符号动力学为描述方法，设计了一种基于混沌状态的微弱电信号检测方法。
The abilities of long distance communication and weak signal detection are deteriorated by various white noises existing in the electronic instruments and system.
工程中常遇到各类噪声信号，噪声存在于电子设备和系统中，它经常妨害长距离通信和检测弱信号的能力。
In the paper, the proposed method effectively improves the output noise ratio of the weak signal detection, and increases the monopulse radar tracking range a lot.
本文提出的方法有效地提高了微弱信号检测输出的信噪比，大幅增加了单脉冲雷达的跟踪距离。
However, the traditional weak signal detection method, input signal to noise ratio threshold are subject to certain restrictions, it is difficult to further reduce.
然而，传统的微弱信号检测方法，输入信噪比门限受到一定限制，很难进一步降低。
This paper introduces cross-correlation detection theory and maximum likelihood theory and based on the two theories, puts forward a new method for weak signal detection.
简单介绍互相关检测的原理及最大似然理论，并在此基础上，提出了将互相关检测与最大似然理论相结合检测弱信号的新方法。
Especially I do an in-depth research and improvements on the real-time detection and algorithmic complexity issues which has troubled the traditional weak signal detection.
本文中尤其对于困扰混沌检测的实时性和算法复杂性问题进行了深入的研究与改进。
It is pointed that wavelet analysis has a powerful ability for weak signal detection, which is suitable for withdrawing fault diagnosis of acoustic emission (AE) signals well.
小波分析具有很强的弱信号的检测能力，适用于提取声发射信号的故障特征。
Signal detection system based on chaos theory has the critical sensitivity to periodic signal and the immunity to the strong noise, which can be used in weak signal detection area.
基于混沌理论构建的信号检测系统具有敏感微弱周期信号和对噪声有强免疫力的特点，用于微弱信号检测领域优势明显。
This paper mainly discusses the principles and ways of weak signal detection, based on the applying practice, and comprehensive topical experiment plan in the modern physics is designed.
本文基于应用实践讨论了微弱信号检测原理、检测方法等，设计了近代物理微弱信号检测技术综合专题实验。
According to the different types of power supply, there are chaotic state weak signal detection circuit of constant-current and chaotic state weak signal detection circuit of constant-voltage.
根据电源种类的不同，检测电路可分为恒流式混动态微弱电信号检测电路和恒压式混动态微弱电信号检测电路两种。
The circuit of Photoelectricity Weak Signal Detection, preamplifier circuit, difference circuit, modulation circuit, optical source thermal control and current drive circuit etc. are designed.
设计实现了基于差分后谐波检测的微弱信号处理电路、前置放大电路、差分电路、调制电路和光源温度控制电路及电流驱动电路等。
Through casing resistivity logging is an important logging technology, and the difficulty in this technology is the detection of weak signal.
过套管电阻率测井是一项重要的测井技术，该项目的一个难点为微弱信号的检测。
Theroy and simulation study have shown that this detection system is very sensitive to weak sine signal under strong noise and can effectively restrain any strong noise which has zero mean.
理论分析及仿真实验表明该检测系统对被强噪声覆盖的微弱正弦信号非常敏感，对任何零均值噪声具有极强的抑制能力。
Author designed a high Q value auto tracing sampling filter for signal detection of weak light level.
作者用采样滤波器制成了用于弱光信号检测的高q值自跟踪采样滤波器。
Using the optical chopper to modulate the detected light to make it related to the reference squarewave signal is a common method of locking phase detection of weak signals.
其中利用光学斩光器对被测光进行调制使其与方波参考信号相关是对微弱光信号进行锁相检测的一种常用方法。
Both on time domain and frequency domain, the detection for lifetime of weak fluorescence signal is studied.
在时域和频域上进行了微弱荧光信号的寿命检测的研究。
A new micro-ampere detector, which USES the data amplifier to enlarge the weak signal, is developed according to the principle of the ampere detection and the potentiostat.
根据安培检测和恒电位器原理，利用数据放大器采集放大微弱信号，研制了一种新型微安培检测器。
Also, the method of correlation detection is adopted to measure the weak signal in this measurement system.
以该方法为基础，具体分析了相关检测技术对于大口径微弱信号检测方法的适用性。
According to the detection demand of the weak photoionization signal, a new kind of data acquisition and processing system of photoionization signal is developed.
根据微弱光离子化信号的检测需要，开发出一种光离子化信号数据采集与处理系统。
According to the detection demand of the weak photoionization signal, a new kind of data acquisition and processing system of photoionization signal is developed.
根据微弱光离子化信号的检测需要，开发出一种光离子化信号数据采集与处理系统。
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