phase modulation

-D Space Vector Modulation in Three-Phase Inverter

相位展开问题。应用于三相变换器的三维空间矢量调制

The approach is to use short-time analysis to extract the characteristics of time-varying amplitude, frequency and phase in a digital modulation signal, and applies them for simple identification.

该方法用短时分析提取数字调制信号在幅度、频率和相位随时间变化的特征，并利用这些特征对各种数字调制信号进行识别。

Digital Phase Modulation Based on Ternary System

基于三值系统的数字相位调制

Study on Joint Frequency and Phase Modulation Technique in Long Range Underwater Acoustic Communication

水声远程通信的联合频率相位调制技术研究

Supermode depression was realized by introducing additive pulse limiting effect using self phase modulation induced spectral spreading in dispersion shifted fiber and spectral bandpass filtering simultaneously. Supermode noise can be depressed enough when the pump power was 50 mW.

利用自相位调制+频谱滤波抑制超模噪音，实验中当抽运功率在50mW以上时就足可以抑制超模噪音。

The phase modulation has some more advantages against CW, which uses ASK ( amplitude shift keying ).

相位调制与使用ASK ( 幅度键控 ) 的CW相比有很多优点.

Comparison of wakefield and relativistic effects on the self-phase modulation and frequency shift of intense laser pulse propagation

尾波场与相对论效应对激光脉冲自相位调制及频移影响的比较研究

Simulation results show that with the non-linear constant phase path, spectral spreading has been resisted and the envelope fluctuation has been reduced by using the new IJF signals on the phase modulation technologies.

仿真结果表明：将其应用于相位调制技术后，相位路径非线性平滑连续，有效降低了调制起伏幅度，抑制了频谱扩展。

A novel high sensitive laser spectroscopy technique,-frequency phase modulation-cavity enhanced modulation transfer spectroscopy, is presented.

提出了一种新的高灵敏激光光谱技术激光 双 频相位调制环形腔增强调制转移光谱技术.

Time-Phase Modulation Signal Analysis Based on Cyclic Spectrum Correlation Technology

基于循环谱理论的时相调制信号分析循环计时电势分析法

A Joint Transform Correlator Based on Phase Modulation of the Power Spectrum

基于对功率谱进行位相调制的联合变换相关器

Research on PN phase modulation and PAM combined ranging system

伪码调相与PAM复合测距系统研究

Based on the discussion on LFM signal, this paper studies several jamming methods and presents the simulation experiments, including: directed noise amplify jamming, phase modulation jamming, time-delayed jamming, frequency-shift jamming, etc.

在分析线性调频（LFM）信号的基础上，研究了多种基于DRFM的雷达干扰技术，仿真验证了干扰效果，包括：射频噪声干扰、噪声调相干扰、延时干扰和移频干扰等。

First thethe phase modulation and the LUT value was measured the linear LUT curve.

研究了液晶波前校正器位相调制曲线非线性的校正以及液晶自适应闭环对畸变波前的校正.

Loop frequency locking technique in phase modulation spectroscope technique R-FOG system has been researched.

对基于调相谱检测技术R-FOG系统中的环路频率锁定技术进行了研究。

This paper will discuss the effect of Cross-phase modulation ( XPM ).

本文将主要对交叉相位调制 ( XPM ) 效应的影响展开研究.

This model took into account longitudinal variations of carrier-induced refractive index, phase modulation, the reflection at input and output face, amplified spontaneous emission noise and transverse gain clamping by vertical laser field ( VCL).

模型考虑了纵向载流子密度变化引起的有源区折射率的改变、相位调制、端面反射、放大的自发辐射噪声和横向的垂直光场（VCL）的增益钳制作用。

A method of phase modulation in which the two significant conditions differ in phase by radians.

两个主要状态在相位上差π弧度的一种相位调制方法.

Echo modeling and simulation in a PD fuze target simulator for phase modulation by pseudo random coding are studied.

针对伪码调相脉冲多普勒引信目标模拟器的视频回波信号进行建模与仿真。

The quality of the output voltage in step level inverters could be improved both by the scheme of amplitude modulation and by the scheme of phase modulation.

通过调节各阶梯电平的幅度或各阶梯电平的相角都可以达到改善逆变电源输出电压质量的目的。

The synchronization method of the pulse source of the MULTI-PLEX time division phase modulation communication receiver

多路时分调位通信接收机脉冲源的同步方法

An Effective Method for Rejecting the Spurious Interference in Phase Modulation and its Measurement

抑制寄生调相干扰的有效方法及其测量

And the non-inverted conversion is obtained by large filter detuning, which is used to extract the frequency chirps, and in this condition the cross phase modulation ( XPM) is dominant.

当滤波器失谐量较大时，得到同相波长转换结果，此时交叉相位调制（XPM）占主导作用，而滤波器起到提取啁啾信息的作用。

Therefore, the phase modulation formats are very suitable for the upgrade of the transmission systems.

故相位调制格式成为系统升级首选的传输技术.

The instantaneous corresponding relationship between the switching functions of MC and its equivalent AC DC AC topology with the limiting conditions is deduced, so that the PWM strategy of MC can be synthesized on the basis of space vector modulation of input phase currents and output line voltages.

在输入相电流空间矢量调制和输出线电压空间矢量调制的基础上，根据开关函数的瞬时对应关系及其限定条件，综合出MC的PWM控制策略。

Mode locking can be induced not only by loss modulation, but also by phase modulation.

锁模不仅可用损耗调制取得, 也可用位相调制来得到.

Pulse-phase modulation qualifying symbol. Modulation type can be specified.

脉冲 - 相位调制限定符号. 可指定调制类型.

The transmission systems based on phase modulation formats have higher receiver sensitivity and larger nonlinear tolerance than the transmission systems based on OOK modulation format. Therefore, the phase modulation formats are very suitable for the upgrade of the transmission systems.

与基于开关键控（OOK）调制格式的传输系统相比，基于相位调制格式的传输系统有较高的接收机灵敏度和较大的非线性容限。

Phase Modulation and Demodulation complete source code can be directly used by the test.

相位调制解调完整的源代码可以直接使用的考验.

Unification of the frequency shift and pulse compression of an ultrashort laser pulse propagating in a background plasma wave is realized by employing the concept of phase modulation of the laser pulse by the plasma wave.

提出等离子体波对光脉冲产生相位调制的观点，把光脉冲在背景等离子体波中传播时的频率移动与脉宽压缩效应统一起来。