光学学报, 2018, 38 (1): 0101003, 网络出版: 2018-08-31
基于脉冲激光在大气中传输的信道补偿 
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Channel Compensation Based on Pulse Laser Propagating in Atmosphere
图 & 表
图 1. (a)波形畸变随频率的变化;(b)理想矩形脉冲;(c)仿真脉冲
Fig. 1. (a) Variation in waveform distortion with frequency; (b) ideal rectangular pulse; (c) simulated pulse
图 3. 野外激光传输实验。(a)发射端;(b)大气信道;(c)接收端
Fig. 3. Field laser transmission experiment. (a) Transmitting terminal; (b) atmosphere channel; (c) receiving terminal
图 5. ISE和modelsim联合仿真。(a) ISE仿真的寄存器传输级原理图;(b) modelsim仿真结果;(c) w的个数与均方误差的关系;(d)实时数据的均方误差
Fig. 5. Co-simulation of ISE and modelsim. (a) Register-transfer level schematic of ISE simulation; (b) result of modelsim simulation; (c) relationship between number of w and mean square error; (d) mean square error of real-time data
图 6. 接收光脉冲强度的平均时间波形。(a)理论模拟的100 MHz矩形脉冲的时间波形;(b)发射端的平均时间波形;(c)矩形脉冲激光信号经过大气后的平均时间波形;(d)运用信道补偿算法后的平均时间波形
Fig. 6. Average time waveform of received light pulse intensity. (a) Time waveform of simulated 100 MHz rectangular pulse; (b) average time waveform of transmitting terminal; (c) average time waveform of rectangular pulse laser signal after passing through atmosphere; (d) average time waveform after using channel compensation algorithm
图 7. 接收光脉冲强度的频域波形包络。(a)理论模拟的100 MHz矩形脉冲的频域波形包络;(b)发射端的频域波形包络;(c)矩形脉冲激光信号经过大气后的频域波形包络;(d)运用信道补偿算法后的频域波形包络
Fig. 7. Frequency-domain envelope of received light pulse intensity. (a) Frequency-domain envelope of simulated 100 MHz rectangular pulse; (b) frequency-domain envelope of transmitting terminal; (c) frequency-domain envelope of rectangular pulse laser signal after passing through atmosphere; (d) frequency-domain envelope after using channel compensation algorithm
图 8. 接收光脉冲的功率谱包络。(a)理论模拟的100 MHz矩形脉冲的功率谱包络;(b)发射端的功率谱包络;(c)矩形脉冲激光信号经过大气后功率谱包络;(d)运用信道补偿算法后的功率谱包络
Fig. 8. Power spectrum envelope of received light pulse. (a) Power spectrum envelope of simulated 100 MHz rectangular pulse; (b) power spectrum envelope of transmitting terminal; (c) power spectrum envelope of rectangular pulse laser signal after passing through atmosphere; (d) power spectrum envelope after using channel compensation algorithm
图 9. 野外实验BER统计图。(a) BER样本统计图;(b)未经过补偿算法时的第10个样本数的判决概率;(c)经过补偿算法时的第10个样本数的判决概率,其中第10个样本数为1.4×107
Fig. 9. Bit error rate statistic chart of field experiments. (a) BER sample statistic chart; (b) judgment probability of the 10th sample number without compensation; (c) judgment probability of the 10th sample number with compensation, where the 10th sample number is 1.4×107
表 1FPGA内部资源利用统计
Table1. Statistics of FPGA internal resource utilization
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姚海峰, 倪小龙, 陈纯毅, 佟首峰, 姜会林, 刘智. 基于脉冲激光在大气中传输的信道补偿[J]. 光学学报, 2018, 38(1): 0101003. Haifeng Yao, Xiaolong Ni, Chunyi Chen, Shoufeng Tong, Huilin Jiang, Zhi Liu. Channel Compensation Based on Pulse Laser Propagating in Atmosphere[J]. Acta Optica Sinica, 2018, 38(1): 0101003.
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