【摘要】：整層大氣透過率是反映大氣輻射傳輸特性的重要參數(shù),在大氣輻射、地球資源遙感、空氣質(zhì)量監(jiān)測以及目標(biāo)識別等研究中均具有重要意義。常用的整層大氣透過率測量裝置,如太陽輻射計(jì)和傅立葉變換光譜儀等,難以兼顧高分辨率以及便攜機(jī)動等光電工程應(yīng)用的需求。為此,本文基于一種高靈敏度光譜探測技術(shù),圍繞整層大氣透過率的直接測量開展了相關(guān)研究,取得的主要成果如下:(1)基于激光外差光譜探測技術(shù),結(jié)合目標(biāo)跟蹤裝置自行研制了一套中波紅外波段的高分辨率整層大氣透過率直接測量系統(tǒng),詳細(xì)分析了測量系統(tǒng)中各關(guān)鍵環(huán)節(jié)的噪聲情況,該測量系統(tǒng)的信噪比為513.2,光譜分辨率達(dá)到了0.006cm-1。(2)利用建立的高分辨率整層大氣透過率測量系統(tǒng),采用Langley-plot定標(biāo)法對系統(tǒng)進(jìn)行了外場標(biāo)定,開展了合肥地區(qū)春季、秋季兩個典型季節(jié)的外場測量與對比分析,獲得了 4.497微米波段整層大氣透過率的直接測量數(shù)據(jù),并與MODTRAN 5.0模式軟件計(jì)算的結(jié)果進(jìn)行了對比分析,兩者一致性較好,驗(yàn)證了該測量系統(tǒng)的可行性,證明了激光外差探測技術(shù)在大氣探測方面的優(yōu)勢和潛力。(3)在晴朗、少云的天氣條件下,合肥地區(qū)春季整層大氣透過率的變化范圍為0.156～0.708,均值、標(biāo)準(zhǔn)偏差分別為0.435、0.128;秋季整層大氣透過率的變化范圍為0.192～0.639,均值、標(biāo)準(zhǔn)偏差分別為0.397、0.128。從整層大氣透過率的概率分布來看,低于0.3的概率分別為15%(春季)、11%(秋季),透過率分布在0.3～0.5之間的概率為53%(春季)、63%(秋季),透過率分布在0.5～0.7之間的概率為32%(春季)、26%(秋季)。
[Abstract]:The transmittance of the whole atmosphere is an important parameter to reflect the characteristics of atmospheric radiation transmission. It is of great significance in the study of atmospheric radiation, remote sensing of earth resources, air quality monitoring and target recognition. Conventional full-layer atmospheric transmittance measurement devices, such as solar radiometers and Fourier transform spectrometers, can hardly meet the needs of optoelectronic engineering applications such as high resolution and portable maneuverability. Therefore, based on a kind of high sensitivity spectral detection technology, the related research is carried out around the direct measurement of atmospheric transmittance of whole layer. The main results are as follows: (1) based on laser heterodyne spectrum detection technology, Combined with the target tracking device, a direct measurement system of high resolution full-layer atmospheric transmittance in the middle wave infrared band is developed. The noise of every key link in the measurement system is analyzed in detail. The SNR of the system is 513.2. The spectral resolution is 0.006cm-1.2.Using the high resolution full-layer atmospheric transmittance measurement system, the system has been calibrated by Langley-plot calibration method, and the spring of Hefei area has been carried out. The direct measurement data of atmospheric transmittance of 4.497 micron band are obtained from the field measurements and comparative analysis of two typical seasons in autumn. The results are compared with those calculated by MODTRAN 5. 0 model software. The results are in good agreement with each other. The feasibility of the measurement system is verified, and the advantages and potential of laser heterodyne detection technology in atmospheric detection are proved. (3) in sunny and less cloud weather, The range of atmospheric transmittance in spring in Hefei is 0.156 ~ 0.708, the mean value and standard deviation are 0.435 ~ 0.128; The range of atmospheric transmittance in autumn is 0.192 ~ 0.639, and the standard deviation is 0.3977 ~ 0.128, respectively. From the probability distribution of atmospheric transmittance of the whole layer, the probability of less than 0.3 is 15% (in spring), 11% (in autumn), 53% (in spring) and 63% (in autumn) when the transmittance distribution is between 0.3 and 0.5. The probability of transmittance between 0.5 and 0.7 is 32% (in spring) and 26% (in autumn).
【學(xué)位授予單位】：中國科學(xué)技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P412;O433.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 談圖;曹振松;王貴師;汪磊;劉錕;黃印博;陳衛(wèi)東;高曉明;;4.4μm中紅外激光外差光譜探測技術(shù)研究[J];光譜學(xué)與光譜分析;2015年06期

2 劉丹丹;黃印博;戴聰明;魏合理;饒瑞中;;不同版本HITRAN數(shù)據(jù)庫中紅外波段上行傳輸透過率的計(jì)算[J];紅外與激光工程;2013年07期

3 戴聰明;魏合理;陳秀紅;;通用大氣輻射傳輸軟件(CART)大氣散射輻射計(jì)算精度驗(yàn)證[J];紅外與激光工程;2013年06期

4 魏合理;陳秀紅;戴聰明;;通用大氣輻射傳輸軟件(CART)及其應(yīng)用[J];紅外與激光工程;2012年12期

5 李建玉;徐文清;伽麗麗;詹杰;高亦橋;魏合理;;便攜式全自動太陽光度計(jì)的研制及其應(yīng)用[J];光學(xué)技術(shù);2012年01期

6 朱明;詹杰;;利用恒星輻射測量整層大氣透過率的多目標(biāo)星定標(biāo)[J];強(qiáng)激光與粒子束;2010年12期

7 陳秀紅;魏合理;呂煒煜;朱文越;;CART軟件計(jì)算的紅外大氣透過率和實(shí)測值比較[J];激光與紅外;2009年04期

8 臧壽洪;白云塔;歐陽藝;;大氣透過率測量方法的研究[J];紅外;2009年03期

9 詹杰;郭瑞鵬;黃宏華;魏合理;徐青山;饒瑞中;;利用恒星測量整層大氣透過率[J];強(qiáng)激光與粒子束;2007年11期

10 孫毅義,董浩,畢朝輝,李治平;大氣輻射傳輸模型的比較研究[J];強(qiáng)激光與粒子束;2004年02期

，

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