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为了有效消除载波延迟对相位生成载波(PGC)算法的影响,提出了一种基于同步载波复原的混频基频、二倍频信号生成方法,直接从干涉信号中提取出载波信息并进行同步载波复原。阐述了该方法的生成原理,并通过理论分析、数值计算与仿真解调等手段对相位延迟的影响进行了详细的分析。仿真与实验结果表明,基于同步载波复原方法获得的混频信号与干涉信号完全对齐,可以保证PGC算法实现稳定、精确的解调。
In order to effectively eliminate the effect of carrier delay on the phase-generated carrier (PGC) algorithm, a method of generation of mixed-frequency baseband and double-frequency signals based on synchronous carrier recovery is proposed. Carrier information is extracted directly from the interference signal and synchronized carrier recovery. The generation principle of this method is expounded, and the influence of phase delay is analyzed in detail through theoretical analysis, numerical calculation and simulation demodulation. The simulation and experimental results show that the alignment of the mixed signal and the interference signal obtained based on the synchronous carrier recovery method can ensure stable and accurate demodulation of the PGC algorithm.