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1234567891011012ddLdLFsincoscos2/020213d ()rdd= r2 14151617181920212223ir8cosh8cosh24irt25)tan()tan(cosncosncosncosnrtitit1i2t1i2v)sin()sin(cosncosncosncosnrtitit2i1t2i1h262121vhnnnnrr2728R = Rh = Rv = (n-1)/(n+1)2i2r2i2rN)1N(N)1N(RR 1R = (Nr-1)/(Nr+1)29 0 R 0 R3031323334),(dE),(dLf00351dE/dMdEdLf363738dLTdLP),(dL),(dLRPT39f/dEdLdLdLRTPT40EM41424344Landsat TM: 0-255NOAA AVHRR: 0-102345L = a*DN + bDNL464748