强激光与粒子束, 2006, 18 (8): 1253, 网络出版: 2007-01-11  

星地下行孔径接收闪烁频谱的理论研究

Theoretical study on power spectrum of atmospheric scintillation of aperture receiving for satellite-to-ground downlink
作者单位
哈尔滨工业大学,可调谐激光技术国家级重点实验室,哈尔滨,150001
摘要
基于孔径接收的对数振幅时间相关函数,结合星地激光下行链路的实际情况,推导了适用于星地下行孔径接收的闪烁频谱表达式.进而分析了孔径尺度和湍流外尺度对闪烁频谱的影响.结果表明,下行孔径接收闪烁频谱分为低频段和高频段两个区间,低频段为常数,高频段呈幂指数规律变化,且幂律的绝对值为11/3.当接收孔径增加时,频谱的幅值和宽度逐渐减小,其形状保持不变.随着等效湍流外尺度的增加,低频谱的幅值逐渐增大,高频谱保持不变.
Abstract
参考文献

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潘锋, 马晶, 谭立英, 于思源. 星地下行孔径接收闪烁频谱的理论研究[J]. 强激光与粒子束, 2006, 18(8): 1253. 潘锋, 马晶, 谭立英, 于思源. Theoretical study on power spectrum of atmospheric scintillation of aperture receiving for satellite-to-ground downlink[J]. High Power Laser and Particle Beams, 2006, 18(8): 1253.

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