光学学报, 2015, 35 (10): 1001001, 网络出版: 2015-10-08   

大气湍流中部分相干光束角反射器的回波光强特性

Intensity of Reflected Wave from Corner Reflector Illuminated by Partially Coherent Beam in the Atmospheric Turbulence
作者单位
西安理工大学自动化与信息工程学院, 陕西 西安 710048
摘要
根据广义的Huygens-Fresnel原理和修正Von Karmon谱模型,推导出了部分相干高斯-谢尔模型(GSM)光束上行传输时的平均光强解析式;获得了GSM 光束经角反射器回波后下行传输到接收端的平均光强表达式,并对其进行归一化处理;分析了GSM光束在上行-下行传输过程中平均光强的变化,且发射端和接收端在同一高度。数值分析结果表明:在大气湍流双程斜路径传输中,准直光束受湍流的影响比聚焦光束小;接收端在轴归一化光强随角反射器半径的增大先增大,最终趋于定值;在轴归一化光强随湍流外尺度增大几乎无变化,随湍流内尺度的增大而减小。
Abstract
Based on the generalized Huygens-Fresnel principle and the modified Von Karmon spectrum mode, the analytic expression of mean intensity of partially coherent Gaussian- Schell model (GSM) beam, which is propagating in the atmospheric turbulence along an uplink path, is derived. The analytical formula of mean intensity of GSM beam which is echoed through corner reflector and propagated along a downlink path to the receiver is obtained and normalized. The change of mean intensity of GSM beam when it is propagating along an uplink and a downlink path is analyzed, in the case that the transmitter and the receiver are located on the same height. The results of numerical analysis show that the influence of turbulence to collimated beam is smaller than it is to focused beam, when they propagate along a double slant path in the atmospheric turbulence. On the receiver, with the increase of corner reflector radius, the axial normalized intensity first increases, and eventually tends to be constant. The axial normalized intensity decreases with the increase of turbulence inner-scale, but nearly has no change with the increase of turbulence outer-scale.
参考文献

[1] Andrews L C, Phillips R L. Monostatic lidar in weak-to-strong turbulence[J]. Waves Random Media, 2001, 11(3): 233-245.

[2] 寇添, 王海晏, 王芳, 等. 机载激光探测空中目标脉冲回波特性研究[J]. 光学学报, 2015, 35(4): 0414001.

    Kou Tian, Wang Haiyan, Wang Fang, et al.. Research on pulse echo characteristic of airborne laser detecting[J]. Acta Optica Sinica, 2015, 35(4): 0414001.

[3] 武东生, 白延柱, 刘秉琦, 等. 猫眼效应回波的动态成像探测与目标识别[J]. 光学学报, 2013, 33(8): 0811003.

    Wu Dongsheng, Bai Tingzhu, Liu Bingqi, et al.. Dynamic imaging detection and target recognition for cat-eye effect echo[J]. Acta Optica Sinica, 2013, 33(8): 0811003.

[4] 易修雄, 郭立新, 吴振森. 高斯波束在湍流大气斜程传输中的闪烁问题研究[J]. 光学学报, 2005, 25(4): 433-438.

    Yi Xiuxiong, Guo Lixin, Wu Zhensen. Study on the optical scintillation for Gaussian beam propagation in the slant path through the atmospheric turbulence[J]. Acta Optica Sinica, 2005, 25(4): 433-438.

[5] Lu Wei, Liu Liren, Sun Jianfeng, et al.. Change in degree of coherence of partially coherent electromagnetic beams propagating through atmospheric turbulence[J]. Opt Commun, 2007, 271(1): 1-8.

[6] Wang S C H, Plonus M A. Optical beam propagation for a partially coherent source in the turbulent atmosphere[J]. J Opt Soc Am, 1979, 69(9): 1297-1304.

[7] 柯熙政, 张宇. 部分相干光在大气湍流中的光强闪烁效应[J]. 光学学报, 2015, 35(1): 0106001.

    Ke Xizheng, Zhang Yu. Scintillation of partially coherent beam in atmospheric turbulence[J]. Acta Optica Sinica, 2015, 35(1): 0106001.

[8] Kravtsov Y A, Saichev A I. Effects of double passage of waves in randomly inhomogeneous media[J]. Sov Phys Usp, 1982, 25(7): 494-508.

[9] 冯岳忠, 宋正芳. 湍流大气中反射光束的扩展[J]. 光学学报, 1987, 7(9): 844-850.

    Feng Yuezhong, Song Zhengfang. Beam spread induced by atmospheric turbulence in a folded path[J]. Acta Optica Sinica, 1987, 7(9): 844-850.

[10] 张逸新. 湍流大气中激光束扩展反射效应[J]. 激光技术, 1990, 14(6): 14-21.

    Zhang Yixin. Beam spreads upon specular reflection of laser beams in a turbulent atmosphere[J]. Laser Technology, 1990, 14(6): 14-21.

[11] 张逸新. 湍流大气中激光回波到达角起伏[J]. 激光技术, 1997, 21(1): 25-29.

    Zhang Yixin. Angle-of-arrival fluctuation of reflected laser beam in atmospheric turbulence[J]. Laser Technology, 1997, 21(1): 25-29.

[12] Andrews L C, Miller W B. The mutual coherence function and the backscatter amplification effect for a reflected Gaussian-beam wave in atmospheric turbulence[J]. Waves in Random Media, 1996, 5(2): 167-182.

[13] Andrews L C, Phillips R L, Miller W B. Mutual coherence function for a double-passage retroreflected optical wave in atmospheric turbulence[J]. Appl Opt, 1997, 36(3): 698-708.

[14] 韦宏艳, 吴振森, 彭辉. 斜程大气湍流中漫射目标的散射特性[J]. 物理学报, 2008, 57(10): 6666-6672.

    Wei Hongyan, Wu Zhensen, Peng Hui. Scattering from a diffuse target in the slant atmospheric turbulence[J]. Acta Physica Sinica, 2008, 57(10): 6666-6672.

[15] 武颖丽, 吴振森. 双程传输中粗糙面散射场统计特性的研究[J]. 激光技术, 2011, 35(2): 234-239.

    Wu Yingli, Wu Zhensen. Study on statistical characteristics of rough surfaces scattering in double transmission[J]. Laser Technology, 2011, 35(2): 234-239.

[16] 王利国, 吴振森, 王明军. 湍流大气中的有限孔径平面镜反射波的二阶统计特性[J].光学学报, 2013, 33(11): 1101002.

    Wang Liguo, Wu Zhensen, Wang Mingjun. Second-order statistics for wave reflected by a plane mirror with a finite aperture[J]. Acta Optica Sinica, 2013, 33(11): 1101002.

[17] Andrews L C, Phillips R L. Laser Beam Propagation Through Random Media[M]. Bellingham: SPIE Press, 2005: 671-680.

[18] 王利国. 湍流大气中激光波束目标回波特性[D]. 西安: 西安电子科技大学, 2014: 127-134.

    Wang Liguo. Characteristics of Reflected Wave from Targets Illuminated by Laser Beams in Turbulent Atmosphere[D]. Xi’an: Xidian University, 2014: 127-134.

[19] Shirai T, Dogariu A, Wolf E. Mode analysis of spreading of partially coherent beams propagating through atmospheric turbulence[J]. J Opt Soc Am A, 2003, 20(6): 1094-1102.

柯熙政, 王姣. 大气湍流中部分相干光束角反射器的回波光强特性[J]. 光学学报, 2015, 35(10): 1001001. Ke Xizheng, Wang Jiao. Intensity of Reflected Wave from Corner Reflector Illuminated by Partially Coherent Beam in the Atmospheric Turbulence[J]. Acta Optica Sinica, 2015, 35(10): 1001001.

本文已被 3 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!