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| 大气对外差探测激光雷达影响分析 | |
| 引用本文： | 王恩宏,胡以华,李磊,蔡晓春. 大气对外差探测激光雷达影响分析[J]. 红外与激光工程, 2011, 40(10): 1896-1899 |
| 作者姓名： | 王恩宏 胡以华 李磊 蔡晓春 |
| 作者单位： | 脉冲功率激光技术国家重点实验室,安徽合肥230037;安徽省电子制约技术重点实验室,安徽合肥230037 |
| 基金项目： | 国家自然科学基金(60672154) |
| 摘 要： | 对于光外差体制的激光雷达而言,为减弱大气扰动的影响,需要研究大气衰减及大气湍流对其探测性能的影响.从光场的复振幅和探测面上光斑的爱里斑模型出发,给出了信噪比这一表征外差探测系统关键性能指标.分析了大气衰减和大气湍流对信号光复振幅的影响,研究了大气衰减和弱湍流相位起伏下的光外差探测效率.研究表明,大气衰减不会造成外差效率... |
| 关 键 词： | 相干光学 激光雷达 大气衰减 大气湍流 外差探测效率 |
Influence analysis of atmosphere on heterodyne detection lidar |
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| Wang Enhong,Hu Yihua,Li Lei,Cai Xiaochun. Influence analysis of atmosphere on heterodyne detection lidar[J]. Infrared and Laser Engineering, 2011, 40(10): 1896-1899 | |
| Authors: | Wang Enhong Hu Yihua Li Lei Cai Xiaochun |
| Affiliation: | Wang Enhong1,2,Hu Yihua1,Li Lei1,Cai Xiaochun1,2(1.State Key Laboratory of Pulsed Power Laser,Hefei 230037,China 2.Key Laboratory of Electronic Restriction,Anhui Province,China) |
| Abstract: | The influence of atmospheric attenuation and atmospheric turbulence on the detection performance of optical heterodyne detection ladar system should be analyzed in order to attenuate the effect of atmospheric turbulence.SNR,which is the key performance index of heterodyne system,was derived from the complex amplitude of light field and airy disk model on the detector surface.The influence of atmospheric attenuation and atmospheric turbulence on the complex amplitude of signal light field was analyzed,and th... |
| Keywords: | coherence optics lidar atmospheric attenuation atmospheric turbulence heterodyne detection efficiency |
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