中国激光, 2018, 45 (8): 0810004, 网络出版: 2018-08-11
基于Golay脉冲编码技术的相干激光雷达仿真研究 
下载： 953次
Simulation Research of Coherent Lidar Based on Golay Coding Technology
图 & 表
图 1. Golay互补序列自相关函数。(a) A序列自相关函数;(b) B序列自相关函数; (c) A、B序列自相关函数之和
Fig. 1. Autocorrelation function of Golay complementary. (a) Autocorrelation function of A Golay codes;(b) autocorrelation function of B Golay codes; (c) autocorrelation function sum of A and B Golay codes
图 4. 基于正弦风模型的相干激光雷达时域信号仿真图及不同距离门处的功率谱。(a)理想的正弦风速;(b)相干激光雷达时域信号仿真图;(c)~(e) 0.3,1.5,3.0 km处的功率谱
Fig. 4. Signal simulation of coherent lidar in time domain based on sinusoidal wind model and power spectra at different range gates. (a) Ideal sinusoidal wind velocity; (b) coherent lidar time-domain signal simulation; (c)-(e) power spectra at 0.3, 1.5, 3.0 km
图 5. 基于单脉冲累加技术和脉冲编码技术反演的频谱图。(a)单组编码时间内单脉冲累加后频谱;(b)单组编码时间内64位编码脉冲频谱
Fig. 5. Spectra based on single-pulse accumulation technique and pulse coding technique. (a) Spectrum with cumulative single-pulse in single group coding time; (b) spectrum with 64-bit pulse coding in single group coding time
图 6. 基于脉冲编码技术和单脉冲累加技术风速反演结果及风速误差图。(a)单组编码时间内单脉冲累加后风速;(b)单组编码时间内编码脉冲风速;(c)风速误差
Fig. 6. Wind velocity inversion results based on pulse coding technique and single pulse accumulation technique and wind velocity error map. (a) Wind velocity with cumulative single-pulse in single group coding time; (b) wind velocity with pulse coding in single group coding time; (c) wind velocity errors
图 7. 基于脉冲编码技术和单脉冲累加技术反演的不同风速模型的频谱图及风速结果图。(a)线性风累加平均频谱图;(b)编码脉冲频谱;(c)线性风速反演;(d) NASA阵风累加平均频谱图;(e) NASA阵风编码脉冲频谱;(f) NASA阵风风速反演
Fig. 7. Spectral maps and wind velocity inversion results based on pulse coding and single pulse accumulation technique of different wind velocity models. (a) Linear wind cumulative average spectrum; (b) pulse coded spectrum; (c) linear wind velocity inversion; (d) NASA gust cumulative average spectrum; (e) NASA gust pulse coded spectrum; (f) NASA gust wind velocity inversion
表 1相干激光雷达时域信号模拟参数
Table1. Simulated parameters for coherent lidar time-domain signal
|
周艳宗, 王冲, 魏天问, 上官明佳, 夏海云. 基于Golay脉冲编码技术的相干激光雷达仿真研究[J]. 中国激光, 2018, 45(8): 0810004. Zhou Yanzong, Wang Chong, Wei Tianwen, Shangguan Mingjia, Xia Haiyun. Simulation Research of Coherent Lidar Based on Golay Coding Technology[J]. Chinese Journal of Lasers, 2018, 45(8): 0810004.
PDF全文
