Dagurov(P.N.,(Chimitdorzhiev(T.N.( dpn@ipms.bscnet.ru( ( ( Institute(of(Physical(Material(Science(SB(RAS ! 1!
2!
3!
Complex!dielectric!constant!of!moist!soil! ! = !↓ 1 − %!↓ 2% ! !↓ 1 = ( 2,862−0,012 ' +0,001 () + ( 3,803+0,462 ' −0,341 ()* + ( 119,006−0,500 ' +0,633 () *↑ 2% ! !↓ 2 = ( 0,356−0,003 ' −0,008 () + ( 5,507+0,044 ' −0,002 ()* + ( 17,753−0,313 ' +0,206 () *↑ 2 ! 24 20 16 ε 1 w ( ) 12 ε 2 w ( ) 8 4 0 0 0.1 0.2 0.3 0.4 w
Reflection!coefficient! Homogeneous ! soil! ,↓- = ./01 − √ ! − ( 0%31 ) ↑ 2 /./01 + √ ! − ( 0%31 ) ↑ 2 ! ,↓5 = ! % ./01 − √ ! − ( 0%31 ) ↑ 2 /! % ./01 + √ ! − ( 0%31 Layer!soil! , = (6↓ 3% + 6↓ 2 )(6↓ 2% − 6↓ 1 )7↑%8↓ 2 9 : + (6↓ 3% − 6↓ 1 )(6↓ 2% + 6↓ 1 )7↑ − %8↓ 2 9 : /(6↓ 3% + 6↓ 2 )(6↓ 2% + 6↓ 1 )7↑%8↓ 2 9 : + (6↓ 3% − 6↓ 1 )(6↓ 2% − 6↓ 1 )7↑ − %8↓ 2 9 : ! 5!
!The!argument!of!the!reflection!coefficient!versus! volumetric!moisture!content.!Homogeneous!soil.! ! 180 ! ϕ,!degree! 178 ! 3 ! 176 ! 2 ! 174 ! 1 ! 172 ! 170 ! 0 ! 0.1 ! 0.2 ! 0.3 ! w ! 1 - θ = 0 о , 2 - θ = 40 о , 3 - θ = 60 о ! ! ! 6!
! The!argument!of!the!reflection!coefficient!versus! volumetric!moisture!content.!Layer!soil.! ! 180 ! ϕ,!degree! 4 ! 168 ! 3 ! 2 ! 156 ! 144 ! 1 ! 1 ! 132 ! 120 ! 0 ! 0.1 ! 0.2 ! 0.3 ! w ! " ! d = 2 см , λ = 23 cm !! !! 1, 2 – moisture content of the layer varies, moisture of the soil is 0.3 and 0.1, respectively; 3, 4 - moisture content of the soil varies, moisture of the layer is 0.3 and 0.1, respectively. ! !! 7!
Conclusions! It! is! shown! that! the! layered! structure! of! the! moist! soil! leads! to! significant! changes! in! the! argument! of! the! reflection!coefficient,!reaching!several!tens!of!degrees.!! These! variations! should! be! taken! into! account! in! the! method!of!differential!radar!interferometry!(DInSAR).! Thanks!for!your!attention!! 8!
Recommend
More recommend
