激光在春季江淮气旋降水中的衰减特性研究
|
摘要
在雨中舰载激光武器和激光雷达的工作效能受到制约。因此,研究激光在降水中的衰减特性对军事行动具有重要的科学意义。基于WRF中尺度气象研究模式,对2015年3月30日-4月2日的降水过程进行模拟分析,江淮气旋由于倒槽锋生产生,江苏地区和朝鲜半岛、日本等的降水过程就是高空西风急流与低空急流耦合的结果,与此同时还有700 h Pa切变线的配合。在气旋降水条件下,传输性能较好的10.6μm远红外波仍然受到衰减,在小雨的情况下(降雨率为0.25mm/h)探测距离可损失10%;在中雨的情况下(降雨率为2.7 mm/h)探测距离为正常情况下的70%;而在大雨情况下(降雨率为6 mm/h)探测距离仅为正常情况下的50%。
In the rain, the performance of shipboard laser weapons and laser radars is constrained. Therefore, it is of great scientific and military significance to study the characteristics of laser attenuation in the rain. Based on the WRF mesoscale meteorological model, this paper analyzes and simulates the process of precipitation from March 30 to April 2, 2015. It is found that the Jiang-huai cyclone was generated from inverted trough. The process of precipitation across Jiangsu Province as well as the Korean Peninsula and Japan resulted from the coupling of high altitude westerly jet and low-altitude jet. At the same time, the shear line on 700 h Pa also played a role in this event. Under cyclone precipitation conditions, 10.6 μm far-infrared laser with good transmission properties also weaken. Under the drizzle(rain rate is 0.25 mm/h), the loss of detection range can reach 10%. In the case of moderate rain(rain rate is 2.7 mm/h), the detection range is only 70% of the normal,and in the case of the heavy rain(rainfall rate of 6 mm/h) the detection range is only 50% of the normal.
In the rain, the performance of shipboard laser weapons and laser radars is constrained. Therefore, it is of great scientific and military significance to study the characteristics of laser attenuation in the rain. Based on the WRF mesoscale meteorological model, this paper analyzes and simulates the process of precipitation from March 30 to April 2, 2015. It is found that the Jiang-huai cyclone was generated from inverted trough. The process of precipitation across Jiangsu Province as well as the Korean Peninsula and Japan resulted from the coupling of high altitude westerly jet and low-altitude jet. At the same time, the shear line on 700 h Pa also played a role in this event. Under cyclone precipitation conditions, 10.6 μm far-infrared laser with good transmission properties also weaken. Under the drizzle(rain rate is 0.25 mm/h), the loss of detection range can reach 10%. In the case of moderate rain(rain rate is 2.7 mm/h), the detection range is only 70% of the normal,and in the case of the heavy rain(rainfall rate of 6 mm/h) the detection range is only 50% of the normal.
引文
[1]李娣,陈辉.激光大气传输的雨雾衰减特性研究[J].电子设计工程,2011,09:1-5.
[2]刘西川,高太长,刘磊.基于非球形雨滴的降雨对激光传输衰减的影响[J].红外与激光工程,2013,01:167-173.
[3]KimⅡ,Mc Arthur B,Korevaar E.Comparison of Laser Beam Propagation at 785 and 1550 nm in Fog and Haze for Optical Wireless Communications[J].Optical Wireless CommunicationsⅢ,2001(4214):26-37.
[4]郭婧,张合,王晓锋.雨滴对波长0.532μm激光光束的衰减特性[J].兵工学报,2011,07:878-883.
[5]郭婧,张合,赵学健.降雨对激光定距系统后向散射特性的影响[J].光子学报,2014,11:90-94.
[6]汪亭玉,陈家璧.雨滴在船舶大气激光通信中的遮挡作用[J].光学精密工程,2014,10:2652-2658.
[7]马春林,杨瑞科.激光衰减随降雨率的变化关系[J].淮阴师范学院学报:自然科学版,2009,04:302-305.
[8]朱乾根,林锦瑞,寿绍文等.天气学原理和方法(第四版)[M].北京:气象出版社,2007.
[9]徐娟,周春雨,高天赤.梅雨锋江淮气旋发展机制及其与暴雨的关系[J].科技通报,2013,05:24-29+86.
[10]秦曾灏,李永平,黄立文.中国近海和西太平洋温带气旋的气候学研究[J].海洋学报,2002(S1):106-112.
[11]Van de Hulst H C.Light Scattering by Small Particles[M].New York:Dover Publications,1981.
[12]王威,李进杰,顾德均,高伟.红外辐射的气候环境传输特性分析[J].激光与红外.2000,30(5):290-292.
[13]J A Milbrandt,M K Yau.A Multimoment Bulk Microphysics Parameterization.Part I:Analysis of the Role of the Spectral Parameter[J].Journal of the Atmosphere Sciences,2005,62(9):3051-3064.
[2]刘西川,高太长,刘磊.基于非球形雨滴的降雨对激光传输衰减的影响[J].红外与激光工程,2013,01:167-173.
[3]KimⅡ,Mc Arthur B,Korevaar E.Comparison of Laser Beam Propagation at 785 and 1550 nm in Fog and Haze for Optical Wireless Communications[J].Optical Wireless CommunicationsⅢ,2001(4214):26-37.
[4]郭婧,张合,王晓锋.雨滴对波长0.532μm激光光束的衰减特性[J].兵工学报,2011,07:878-883.
[5]郭婧,张合,赵学健.降雨对激光定距系统后向散射特性的影响[J].光子学报,2014,11:90-94.
[6]汪亭玉,陈家璧.雨滴在船舶大气激光通信中的遮挡作用[J].光学精密工程,2014,10:2652-2658.
[7]马春林,杨瑞科.激光衰减随降雨率的变化关系[J].淮阴师范学院学报:自然科学版,2009,04:302-305.
[8]朱乾根,林锦瑞,寿绍文等.天气学原理和方法(第四版)[M].北京:气象出版社,2007.
[9]徐娟,周春雨,高天赤.梅雨锋江淮气旋发展机制及其与暴雨的关系[J].科技通报,2013,05:24-29+86.
[10]秦曾灏,李永平,黄立文.中国近海和西太平洋温带气旋的气候学研究[J].海洋学报,2002(S1):106-112.
[11]Van de Hulst H C.Light Scattering by Small Particles[M].New York:Dover Publications,1981.
[12]王威,李进杰,顾德均,高伟.红外辐射的气候环境传输特性分析[J].激光与红外.2000,30(5):290-292.
[13]J A Milbrandt,M K Yau.A Multimoment Bulk Microphysics Parameterization.Part I:Analysis of the Role of the Spectral Parameter[J].Journal of the Atmosphere Sciences,2005,62(9):3051-3064.