1) passive coherent detection
无源相干检测
2) correlation detection
相干检测
1.
According to the principle of correlation detection,an automatic measurement system for extinction ratio of polarizer consisted of monochromator and DSP Lock-in amplifier and compurer is designed not only to eliminate the influence on measurement accuracy caused by drift of intensity of light source but also to obatain approximate extinction spectrum.
基于相干检测原理设计了一套由单色仪、数字锁相放大器和计算机联合使用的透射式偏光镜消光比智能化测试实验系统,采用双频双光路分光单探测器接收锁相放大器分离信号比对法进行源补偿测量,克服了光源光强漂移所带来的影响;实现了可见光区消光比的精确自动测量,而且可以测得近似的消光光谱。
3) coherent detection
相干检测
1.
Effect of modulation frequency Jitter on coherent detection and its elimination algorithm;
调制频率抖动对相干检测的影响及消除算法(英文)
2.
Differential detection and coherent detection based on space-time block codes;
基于空时分组码的差分检测与相干检测
3.
The OSCM system based on coherent detection in atmospheric optical communication is designed and the signal transmission performance of this system is simulated and analyzed in this paper.
设计了应用于大气光通信的OSCM(光微波副载波复用)相干检测系统,对系统的信号传输性能进行了仿真分析,在理论上验证了该方案误码率低,可同时传输多路信号,适用于大气信道。
4) Coherent/Non-coherent detection
相干/非相干检测
5) noninterference detection
无干涉检测
6) noncoherent detection
非相干检测
1.
A reduced state sequence detection algorithm with decision feedback for continuous phase modulation is given and extended to noncoherent detection.
给出了一种连续相位调制、结合判决反馈的减少状态序列检测算法,并将其推广到非相干检测形式,能大大减少维特比检测的状态数目。
2.
Then we use noncoherent detection to determine the symbol that is sent by the transmitter.
根据对非线性时间序列降噪的理论,本文采用Gradient Descent方法在CSK(Chaos shift Keying)系统的接收端对混沌时间序列进行降噪,获得一条比原来时间序列噪声更小的时间序列轨道,然后采用非相干检测技术对发射端传输的符号进行判断,理论分析和计算机仿真结果基本一致。
3.
In this paper, a kind of noncoherent detection technology for chaotic signal based on probabilistic method is presented.
提出一种基于概率统计的方法,采用最大似然法和贝叶斯公式,在ChaosShiftKeying系统的接收端重构发射端混沌映射,实现混沌信号的非相干检测。
补充资料：相干散射和非相干散射
再辐射的光量子频率和被吸收的光量子频率准确相等的散射过程称为相干散射。在相干散射的情况下，源函数准确地等于平均辐射强度。再辐射的光量子频率和被吸收的光量子频率不相等的散射过程称为非相干散射。在天体物理中，存在一系列因素使散射过程成为非相干散射。主要的因素是：原子的能级有一定的宽度、原子的热运动和湍动以及压力效应等。对于非相干散射，源函数是相当复杂的。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条