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1、山東農(nóng)業(yè)大學(xué)學(xué)報(bào)(自然科學(xué)版),2005,36(4):545～551JournalofShandongAgriculturalUniversity(NaturalScience)基于TM/ETM+遙感數(shù)據(jù)的地面相對(duì)反射率反演3,41123李玉環(huán),王靜,呂春燕,張繼賢(1.中國(guó)國(guó)土資源部土地利用重點(diǎn)實(shí)驗(yàn)室,北京100035;2.中國(guó)測(cè)繪科學(xué)研究院,北京100039;3.山東科技大學(xué)地球信息科學(xué)與工程學(xué)院,青島266510;4.山東農(nóng)業(yè)大學(xué)資源與環(huán)境學(xué)院,泰安271018)摘要:衛(wèi)星遙感數(shù)據(jù)的大氣輻射校正是定量遙感的基礎(chǔ)與關(guān)鍵。目前大氣輻射校正方法的局限性已經(jīng)嚴(yán)重影響了定量遙感
2、科學(xué)進(jìn)展。鑒于此,COST模型在TM/ETM數(shù)據(jù)上的實(shí)用性逐步得到學(xué)者們的共識(shí)。本文詳細(xì)闡述了COST模型的理論及其算法,模型參數(shù)的確定及其獲取途徑。COST模型在完成TM/ETM衛(wèi)星遙感數(shù)據(jù)大氣輻射糾正的同時(shí)實(shí)現(xiàn)了地表反射率反演,為T(mén)M/ETM衛(wèi)星遙感數(shù)據(jù)的應(yīng)用研究奠定了基礎(chǔ)。文章進(jìn)一步借助地面光譜儀的實(shí)測(cè)數(shù)據(jù)對(duì)研究區(qū)地表反射率反演結(jié)果進(jìn)行了空間維和光譜維的分析驗(yàn)證,結(jié)果認(rèn)為COST模型完全能夠滿足衛(wèi)星遙感數(shù)據(jù)基本應(yīng)用研究的需要。關(guān)鍵詞:大氣輻射校正;COST模型;地表相對(duì)反射率;衛(wèi)星遙感數(shù)據(jù)中圖分類號(hào):P208;P9;TP7;S1文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1000-232
3、4(2005)04-0545-07RETRIEVEOFEARTHREFLECTIONBASEONTHEREMOTESENSINGDATAOFTM/ETM3,4112*LIYu-huan,WANGJing,LVChun-yan,ZhANGJi-xian(1.KeyLabofLanduseoftheMinistryofLandandResourcesP.R.C,Beijing,100035;2.ChineseAcademyofSurveyingandMapping,Beijing,100039;3.ShandongUniversityofScienceandTechnology
4、,CollegeofErathInformationScienceandEngineering,Qingdao,266510;4.ShandongAgriculturalUniversity,CollegeofResourcesandEnvironment,Taian,271018,China)Abstract:Atmosphericandradiometriccorrectionisthebasisandkeyforquantificationalremotesensing.Nowadaythelimitationofthemethodofatmosphericandra
5、diometriccorrectionhadbeenstrictlyeffec2tingthedevelopmentofRSscience.Hereinabovestatement,commonunderstandinghadbeenbuildingontheutilityofCOSTmodel.ThepaperexpatiatedtheCOSTmodelmethodandarithmetic,andhowtoconfirmtheparameters.WithCOSTmodelfinishingatmosphericandradiometriccorrectionofTM/
6、ETM,retrieveofearthreflectionhadbeencarriedout.Thisworkestablishedthefoundationofapplica2tionstudyoftheremotesensingdataofTM/ETM.Furthermorethepaperanalysicedandtestedthere2trievedresultfromspationalandspectraldimentionsbythesurveyingdataofgroundspectrumappara2tus.ItisconsideringthattheCOS
7、Tmodelcompletelymeettheneedofapplicationstudyofremotesens2ingdataofTM/ETM.KeyWords:atmosphericandradiometriccorrection;COSTmodel;earthrelativereflection;LandsatThe2maticMapperdata1基于TM/ETM+遙感數(shù)據(jù)的COST模型與理論遙感圖像輻射值受來(lái)自大氣層的影響是多方面的。就被動(dòng)傳感器而言,一方面大氣層的吸收和散射使來(lái)自地物目標(biāo)的輻射能量在到
