FPGA-based digital chaotic anti-interference lidar system

被引：20

作者：

Feng, Liyan ^{[1
]}

Gao, Huazheng ^{[2
]}

Zhang, Jianxun ^{[2
]}

Yu, Minghai ^{[2
]}

Chen, Xianfeng ^{[1
,3
]}

Hu, Weisheng ^{[2
]}

Yi, Lilin ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Phys & Astron, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Elect Informat & Elect Engn, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China

[3] Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Jinan 250358, Peoples R China

来源：

OPTICS EXPRESS | 2021年 / 29卷 / 02期

关键词：

Field programmable gate arrays (FPGA);

D O I：

10.1364/OE.414185

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We use the chaotic signal generated by a field-programmable gate array (FPGA) to establish a digital chaotic pulse lidar system, which can achieve mid-range detection and high ranging accuracy without a complex optical structure. We employ the FPGA to generate random sequences with different modulation rates based on different chaotic iterative equations and initial values. By selecting the initial value and improved logistic equations, we successfully achieve centimeter-level ranging accuracy. Experiments have proved that the digital chaotic lidar system can effectively resist the interference of chaotic signals, square wave signals, and sine wave signals with modulation frequencies of 10 MHz, 100 MHz, 200 MHz, and 1 GHz, showing its strong anti-interference capability. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：719 / 728

页数：10

共 23 条

[1] Laser ranging:: a critical review of usual techniques for distance measurement [J].