弱信号

基于matlab的相干平均弱信号检测法

A Detection Method of Coherence Average for Weak Signal Based Matlab

混合型噪声中已知弱信号的失配ROBUST检测

Mismatched robust detection of a known weak signal in mixture noise model

利用BP神经网络从强噪声背景中提取弱信号

Extraction of Weak Signal from Strong Noise Background by BP Neural Networks

基于BP神经网络的弱信号提取方法研究

A Method of Extracting Weak Signal Based on BP Algorithm

基于DSP的弱信号混沌测量新方法研究

Study on New Method of Weak Signal Detection Based on DSP and Chaos Theory

弱信号下的比特同步在GPS的接收机设计中是一个重点也是一个难点。

Under weak signal environments , bit synchronization is very important and difficult in GPS receiver design .

用混沌振子和Kalman滤波检测强分形噪声中的弱信号

Weak Signal Detection of Strong Fractional Noise Using Chaos Oscillator and Kalman Filtering

MEMS传感器弱信号检测电路及集成设计

Integration Design of Weak Signal Detection Circuit for MEMS Accelerometer

Bragg型声光双稳系统对外加弱信号的放大研究

Study on Small Signal Amplification in Bragg Acoustooptic Bistable System

Logistic混沌序列叠加过程分解模型与弱信号高精度复原

The Decomposition Model of Superposition Process on Logistic Chaotic Series and High-Accuracy Recovery for Weak Signals

基于DSP的GNSS弱信号捕获算法的研究与实现

Research and Realization on Acquisition Algorithm of Weak GNSS Signal Based on DSP

近年来，随着基于位置服务（locationbasedservice，LBS）应用需求的增加，弱信号环境下的定位技术引起了全世界的关注。

Along with the increasing application requirements of LBS ( Location Based Service ), the positioning technology in weak signal environment has caused worldwide concern .

线性Radon变换在弱信号提取及强干扰噪声抑制的应用

The application of linear Radon transform in coherent noise elimination and weak signal extraction

强信号背景下基于噪声子空间扩充的弱信号DOA估计方法

DOA estimation based on extended noise subspace in the presence of strong signals

Bragg声光双稳系统在非稳区和稳区对弱信号放大作用研究

Study on Small Signal Amplification of Bragg Acoustooptical Bistable System in Stable Region and Unstable Region

基于FPGA的PMT弱信号检测控制系统设计

Design of a control system for weak signal examination by PMT based on FPGA

基于LM算法的BP神经网络的混沌背景下瞬态弱信号检测

The Weak Signal Detection on the Chaotic Background Based on BP Neural Network of LM Algorithm

Lyapunov特性指数的算法研究及其在弱信号混沌检测中的应用

Study of the Algorithms of Lyapunov Characteristic Exponents and Its Application in Chaos Detection for Weak Signals

F-P半导体激光放大器弱信号机制下的增益特性研究

Study on gain characteristic of Fabry-Perot type semiconductor laser amplifier under weak signal regime

其次，本文对弱信号条件下GPS信号的捕获技术进行了研究。

And it makes the preparation for the following research and simulation . Secondly , acquisition techniques of GPS signal under weak signal conditions are researched in this paper .

利用直接耦合的激光器放大器对，观察了弱信号机制下Fabry-Perot的半导体激光放大器的光放大。

Amplification in Fabry-Perot type semiconductor laser amplifiers has been observed with a directly coupled laser-amplifier pair .

并在此基础上设计了GPS弱信号捕获系统，其核心为互相关干扰检测、强信号重构、互相关消除算法以及作为辅助和校正的增加相干积分时间算法。

Then the GPS weak signal acquisition system is designed which includes interference detection , reconstruction of strong signals , mitigation algorithm and calibrating algorithm of extending the coherent integration time .

InSb磁阻型传感器在弱信号识别中的噪声抑制方法

Noise Suppression Method of InSb Magnetic-resistance Sensor in The Discrimination of Weak Magn tic Signals

结合上述的算法和理论，研究了在强干扰背景下的宽带弱信号源的DOA估计。

According to the algorithms and the theories which are said , DOA estimation of broadband weak signal under strong interferences is studied .

该专利又叫“弱信号区域车辆位置识别”。这意味着，它将使用GPS和手机信号以外的技术来定位用户的车辆。

The patent is for " vehicle location in weak location signal scenarios , " meaning that it would use techniques other than GPS or cell signal to locate the person 's car .

弱信号在Hodgkin-Huxley神经元单向耦合系统中的传输特性

The transmission of weak signal in one-way coupled Hodgkin-Huxley neural system

应用该定位方案，论文还设计实现了基于MR的覆盖呈现功能模块，设计了掉话定位与分析功能模块，并给出弱信号覆盖呈现实例。

Applying the proposed locating algorithm , we designed and implemented the signal coverage analysis function based on MR , and designed dropped call locating and analysis function in network mining and analyzing system , and analyzed the weak signal coverage .

文中叙述了算法的基本原理及仿真结果，指出了对于LFM信号，修正权系数的LMS算法比LMS算法具有更好的提取弱信号的能力，并且算法运算量小。

The basic principle of the proposed algorithm and the simulation results are described . The simulation results show that the modified LMS algorithm is satisfactory .

本文针对弱信号条件下，GPS信号的捕获问题，从理论分析和算法实现两个方面开展了研究工作，取得了一些有意义成果。

This paper aims at acquisition of the GPS signal under weak signal conditions . From two aspects , theoretical analysis and algorithm realization , the research work is carried out , and some significant achievements are obtained .

基于光三角测量原理，文章重点研究了采用光电位置传感器（PSD）进行内径尺寸弱信号检测的方法。

On the basis of optical triangulation measuring principle , the emphasis of the thesis is to investigate the weak signal measuring method of inner diameter employing the PSD .