INVERSION OF SYNTHETIC APERTUR,E R,ADAR (SAR) - MSpace ...

ol'cler to evaluate its full aclvantage ovel the conventioral SAR plocessor'.
In recent years sevelal lelv SAR pÌocessilìg approaches have been lepolted,
in rvhich the /-fr dornain plocessing is utilizecl not only to accomplish the
azimuth corlpression but also simultaneously the -,.'ange curvatule corlections.
To achieve rlole effective SAR processor performance than is available from
the conventional lange-Doppler algolithrn, Rocca el a/. [96], and Raney ancl
Vachon [89] have developecl rvavenuml¡el dorlain or' /-fr dornain SAR signal
processing techniques. (Raney ald Vachon's approach was developed from
alalysis of the SAR systern theoly, while the Rocca eú ø/. apploach rvas
clevelopecl basecl or similarities betlveen the leflection seisrnic and SAR data
acquisition confi gulations. )
Invelsion of SAR data leplesents the tlansformation of SAR signal data
into an image. In this thesis, a particulal SAR invelsion apploach in the
ffr domain is folmulated using the Born (first) approximation. The development
of a new SAR processing apploach is airnecl at formulating an SAR
invelsion capable of plovicling appropriate SAR processed output flom which
the complex backscatteling coeficient of the surface can be eventually estimated.
To extlact the complex backscatteling coefficient of the surface, it
is necessaly that the complex latio of the backscattelecl field to the incident
field at the scattering surface should be estimated from SAR data. The
cleveloprnent concentlates on the initial {orrnulation, ancl a nunerical implementatiol;
the tleveloprnent of a full-fledged SAR processol goes beyond the
purpose of the rvolk.
Tlie /-À domain SAR inversion technique desclibed in this thesis rvas iu-