Experimental results show the optical re-constructed image and numerical reconstructed image are similarity, thus the accuracy of phase modulation characteristics is verified.
实验结果表明，光学再现像与数值模拟结果相吻合，从而验证了纯相位调制特性测量的准确性。
The optical modulation characteristics, differential gain (DG), differential phase (DP) and signal-to-noise ratio (S/N) are described as well in this paper.
文中论述了光调制特性、微分增益（DG）、微分相位（DP）、信噪比（S/N）等重要问题。
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。
Different types of LCSLM have different modulation characteristics, in particular their phase modulation characteristic, so this must be measured before it is used.
但由于不同型号的液晶空间光调制器的调制特性，尤其是位相调制特性存在较大的差异，故在实际使用前均需加以测量后才能应用。
Different types of LCSLM have different modulation characteristics, in particular their phase modulation characteristic, so this must be measured before it is used.
但由于不同型号的液晶空间光调制器的调制特性，尤其是位相调制特性存在较大的差异，故在实际使用前均需加以测量后才能应用。
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