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   调制识别 在 航空航天科学与工程 分类中 的翻译结果: 查询用时:0.385秒
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调制识别
相关语句
  modulation recognition
    Automatic Modulation Recognition of BPSK,QPSK,OQPSK,UQPSK
    BPSK、QPSK与OQPSK、UQPSK调制识别方法初探
短句来源
  automatic modulation recognition
    Automatic Modulation Recognition of BPSK,QPSK,OQPSK,UQPSK
    BPSK、QPSK与OQPSK、UQPSK调制识别方法初探
短句来源
  “调制识别”译为未确定词的双语例句
    The thesis analyzed characteristic and demodulation realized of GMSK signal. Attempting to design a universal multi-mode demodulator of BPSK, QPSK and GMSK, the thesis studiedmodulation identification technology. The identification means of three kinds of modulation types based on theory decision-making is analyzed.
    本文分析了GMSK信号的特点及解调实现,试图设计一种BPSK、QPSK、GMSK通用的多模式解调器,因而研究了调制识别技术,分析了以决策论为基础的三种信号的调制识别方法,并提出了基于人工神经网络的调制识别方法。
短句来源
  相似匹配句对
    Automatic Modulation Recognition of Digital Mixed Signals in Satellite Communication Systems
    卫星数字调制混合信号的自动识别
短句来源
    Automatic Modulation Recognition of TTC Signals of Satellite
    卫星测控信号的调制类型自动识别算法
短句来源
    (2) The part for modulation signal;
    (2)调制信号源;
短句来源
    ATTITUDE IDENTIFICATION OF SPACECRAFT
    空间飞行器的姿态识别
短句来源
    State Intelligent Identify of Aeroengine
    航空发动机状态智能识别
短句来源
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  modulation recognition
A new digital modulation recognition method using features extracted from GAR model parameters
      


This paper is about automatic modulation recognition of TTC(Tracking,Telemetry and Control)signals of satellites. The modulation schemes considered are FM and PM. Two algorithms are developed. The influence of carrier frequency offset on the probability of correct decision is considered and some carrier frequency excursion estimation algorithms are used to remove the influence. According to the computer simulation experiment, it is found that the least-squares algorithm is an effective method to remove the influence...

This paper is about automatic modulation recognition of TTC(Tracking,Telemetry and Control)signals of satellites. The modulation schemes considered are FM and PM. Two algorithms are developed. The influence of carrier frequency offset on the probability of correct decision is considered and some carrier frequency excursion estimation algorithms are used to remove the influence. According to the computer simulation experiment, it is found that the least-squares algorithm is an effective method to remove the influence of carry frequency offset and part noise in the algorithm based on standard deviation of the direct value non-line component of instantaneous phase( σ dp ), and that the probability of correct decision is up to 100% in the algorithm based on standard deviation of the direct value of instantaneous warped phase( σ dwp ),when the signal-to-noise ratio is higher than negative 6dB at the presence of 100Hz carry frequency offset.

研究了应用于卫星测控信号的自动调制识别算法 ,提出了FM和PM测控信号识别的两种算法 ,分析并仿真验证了载频偏移对正确识别率的影响 ,研究了载频偏移估计算法对消除载频偏移影响的效果。计算机仿真实验表明 :在基于瞬时相位标准偏差σdp为关键特征的算法中 ,采用最小二乘原理估计频偏可以有效地消除载频偏移和部分噪声的影响 ;基于瞬时折叠相位偏差σlwp的算法在载频偏移为 1 0 0Hz,信噪比高于 - 6dB时 ,其识别率可达 1 0 0 %。

 
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