给出了利用信号星座图的QAM信号调制方式识别技术。
The modulation recognition technique of QAM signal by the constellation diagram is given in this paper.
在军事领域，通信信号调制方式的识别是对敌方通信进行干扰或侦听的前提。
In military field, the modulations recognition of communication signals is the prerequisite of interference towards the enemy's communication.
通信信号调制方式的自动识别和调制参数的自动估计是非协作通信和软件无线电中的重要问题。
Automatic modulation recognition and modulation parameters estimation are key problems in non-cooperative communication systems and Software Defined Radio.
从有线数字电视射频信号特征参数提取着手，建立了一套识别16QAM和64 QAM射频信号调制方式的数学算法。
Based on the characteristic extracting of RF signal in digital cable TV system, this paper puts forward an algorithm for modulation recognition between 16qam and 64qam RF signals.
总结了伽利略卫星导航系统各信号的信号调制方式、各频段的信号调制体制，特别是BOC调制及ALTBOC调制技术的基本原理。
The modulation of Galileo Satellite Navigation System's signal is analyzed in this paper, especially, the basic principle of the BOC and ALTBOC is analyzed in detail.
分析了频谱倒置对不同信号调制方式的影响；给出了实现无线电频谱倒置的算法；以多速率数字信号处理理论为基础给出了具有低计算复杂度的实现方案。
The impact of the inverse placement of spectrum for signals with different modulation modes is analyzed, then the method to invert radio signal spectrum is given.
非线性放大器对发射信号的影响，与调制方式密切相关。
Non - linear amplifier on the transmIt 'signal of the impact is closely related with the modulation method.
自动调制识别的目的就是在未知调制信息内容的前提下，判断出通信信号的调制方式，并估计出相应的调制参数。
The objective of automatic modulation identification is to decide the modulation type and estimate the modulation parameters without any priori knowledge about the signal information content.
自动调制识别的目的就是在未知调制信息内容的前提下，判断出通信信号的调制方式，并估计出相应的调制参数。
The objective of automatic modulation identification is to decide the modulation type and estimate the modulation parameters without any priori knowledge about signal contents.
通过简述多种调制方式中频信号数字产生的基本处理方法，提出了一种具体实施方案，并分析了其技术特点。
This paper discusses the digital generation method for communication IF signals and proposes a concrete implementation resolution and analyzes its technical characteristics.
有线遥控是通过专用电缆或动力线作为载波体，对信号用调制解调器传输方式，达到只用少量通道即可实现控制的方法。
Wired remote control is a dedicated cable or power line as a carrier, the signal with modem transmission mode, to achieve a small number of channels can be used to control the method.
系统采用移频键控（FSK）调制方式，对轴温数字信号进行处理并发射，上传给便携式模拟接车系统。
The system adopts FSK modulation way to carry out directly digital signal of axle tempratureand transmit to the receiving system of test train.
调幅广播可以发送更远的距离，但它的声音质量却不及后来一种被称为频率调制的无线电信号处理方式优越。
AM radio can be sent over larger distances, but the quality of the sound is not as good as a later kind of radio signal processing, called frequency modulation.
接着详细地介绍了北斗卫星的信号体制，对其调制解调方式作了深入地研究，对电文格式作了说明。
After that, the article introduces the signal system as well as modulation and demodulation of Beidou satellite, next, explain the telegram form elaborately.
自动调制识别的目的就是在未知调制信息内容的前提下，判断出通信信号的调制方式，并估计出相应的调制参数。
The objective of automatic modulation identification is to decide the modulation type and estimate the modulation parameters without any prior knowledge about the signal information content.
数字调制方式的识别对于通信信号分析有着重要的作用。
Identification of digital modulation schemes plays an important role in signal analysis.
频率调制的一种方式，其中载波频率在标志频率和场频率之间移动，以响应外加的情报(数据)信号。
A form of frequency modulation in which the carrier frequency is shifted between a mark frequency and a space frequency in response to the impressed intelligence signal (frequency-shift keying).
提出了完整的数字通信信号的调制方式识别算法，该算法具有识别类型多，正确识别率高的特点。
An MC algorithm for digital modulated signals is proposed, with a wide recognition range and a high classification probability.
其次，采用数值计算的方式，分析了输入方波信号与光纤束位相匹配对对比度调制传递函数的影响。
The next, the influence of phase match between input signal and line-array fiber-optic image bundles on the contrast transfer function was analysed digitally.
针对2DPSK调制方式，提出了通过对相邻两个码元信号求互谱来获取相对相位信息的互谱解调法。
Aimed at 2dpsk modulation, the cross spectra demodulation method that obtains relative phase information through calculating the cross spectra of two neighboring symbol signals is proposed.
重点分析了脉冲无线电方式的原理，脉冲的几种产生方法，调制、发射以及脉冲信号的技术特点。
The principle of impulse radio (IR), several kinds of pulse generators, pulse modulation and signal emission for UWB radio, as well as characteristics of UWB-IR are mainly presented and concluded.
传输信号采用正交相移键控调制方式，以有效利用有限通信带宽。
Quadrature phase shift keying(QPSK) signaling is employed to make efficient use of the available bandwidth.
该方案结合SDH技术和AT M技术两者的优点，提高了DVB信号适配到SDH网络的适配效率，同时满足了HFC不同调制方式的灵活性。
This scheme combined the advantages of SDH technology and ATM technology, improved adaptation efficiency from DVB signal to SDH network, and satisfied HFC modulation mode's flexibility.
发送端传送的数字信号在三种调制方式下均可很好的隐藏于混沌载波中，并在接收端得到正确恢复。
With the three encoding methods, the digital signals sent in transmitting part can be well hidden by chaotic carrier and recovered correctly in the receiver.
针对传统数字调制信号频谱扩展问题，提出具有相位突变特性的时相调制(TPM)方式。
Aiming at the spectrum spread problem of traditional digital modulation signals, a time-phase modulation (TPM) method with abrupt phase change characteristic is proposed.
提出并分析了集成电光波导调制器在多普勒雷达中的一种新的应用方式。该调制器的电极采用鳍线结构，能够方便地获取多普勒频移信号。
In this paper, an integrated optical modulator is proposed and analyzed, which is constructed in a fin line geometry and can be applied to a Doppler radar for processing the Doppler frequency shift.
在分析AWGN信道特性的基础上，通过研究典型调制方式下的超宽带冲激无线电信号(IR -UWB)的接收机结构，找到了一种IR - UWB最佳接收机。
The structure of receiver in typical modulation Impulse Radio Ultra Wide Band (IR-UWB) is discussed, and the best IR-UWB receiver on AWGN cannels is given.
该系统可以在完全未知信号参数的情况下，应用各种盲估计算法进行信号参数估计，以及进行调制方式识别。
The receiver can estimate all the parameters needed for demodulation using blind estimation algorithms and recognize the modulation type using the MC algorithm proposed above.
因此，若将重复周期参差调制方式融合到频率编码信号中，可使信号具备时-频调制双重随机性。
So, the modulation of irregular pulse repetition interval may be employed in FCP that the randomization of signal modulation would be obtained in both time and frequency domains.
设计出了二次调制系统：采用连续可变斜率增量调制（CV SD）实现模拟话音信号与数字编码的转换，采用二进制相对相移键控（2DPSK）作为数字调制方式。
A twice modulation is designed:, CVSD was adopted to realize conversion between analog and digital voice signals, 2DPSK was used as the digital modulation mode.
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