Experimental study of coherent accumulation based on sequence shifting and a genetic algorithm

Dong Hongzhou; Li Guoqiang; Ao Mingwu; Yang Chunping; Liu Yong

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Experimental study of coherent accumulation based on sequence shifting and a genetic algorithm

机译：基于序列移位和遗传算法的相干累积的实验研究

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Because there is a certain phase difference between the two adjacent samples of an analog-to-digital converter for a heterodyne signal, we propose to eliminate the random phases in the coherent accumulation by shifting the sampling sequences with different steps. A genetic algorithm is used to determine the shifting steps of the sequences. An experiment has been conducted to verify the effectiveness of our approach. The results prove that the approach can greatly increase the strength of the heterodyne signal compared with the accumulation with random phases. Our approach is easier to implement in comparison with existing technologies. (C) 2017 Optical Society of America

机译：因为对于外差信号的模数转换器的两个相邻样本之间存在一定的相位差，所以我们提出通过用不同步骤转换采样序列来消除相干累积中的随机阶段。遗传算法用于确定序列的移位步骤。进行了一个实验以验证我们的方法的有效性。结果证明，与随机阶段的积累相比，该方法可以大大提高外差信号的强度。与现有技术相比，我们的方法更容易实施。（c）2017年光学学会

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来源
《Applied optics》 |2017年第13期|共7页
作者
Dong Hongzhou; Li Guoqiang; Ao Mingwu; Yang Chunping; Liu Yong;
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作者单位

Univ Elect Sci &

Technol China Sch Optoelect Informat State Key Lab Elect Thin Films &

Integrated Devic Chengdu 610054 Peoples R China;

Ohio State Univ Dept Elect &

Comp Engn Dept Ophthalmol &

Visual Sci Columbus OH 43212 USA;

Univ Elect Sci &

Technol China Sch Optoelect Informat State Key Lab Elect Thin Films &

Integrated Devic Chengdu 610054 Peoples R China;

Univ Elect Sci &

Technol China Sch Optoelect Informat State Key Lab Elect Thin Films &

Integrated Devic Chengdu 610054 Peoples R China;

Univ Elect Sci &

Technol China Sch Optoelect Informat State Key Lab Elect Thin Films &

Integrated Devic Chengdu 610054 Peoples R China;

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Experimental study of coherent accumulation based on sequence shifting and a genetic algorithm

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