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AAnalysis of Windowing Enalysis of Windowing Eon Synthetic Aperture Ron Synthetic Aperture R

Raw FocusedRaw Focused--Image FormImage Form

Rahmat Arief anDivison of Acuisition and !round Stat

Remote Sensing "echnology a

Indonesian $ational Institute of Aeronautics and

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Introduction Synthetic Aperture Radar (SAR)

SAR Image Formation Algorithms

SAR Image Quality Parameters

Sidelobes and Its Suppression

Methods n o! unct on

SAR Image Quality Measurement

Simulation and Results

"onclusion

Re#erences

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IntrIntr

$he use o# Synthetic Aperture Radar

has been increased% recently&

hy radar (SAR)'

SAR has o!n illumination able to o

and night SAR penetrates cloud and precipitati!eather system

SAR pro*ides di##erent #eature o# ob+complementary o# optical image

("ummi

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IntrIntr

Se*eral SAR image #o

ha*e de*eloped to prsuch as Range 0opple"hirp Scalling algorit2 algorithm and Spec

SAR image #ormationo# a coherent%integration o# the rsamples (Reigber% et&al% -

SAR Ac4uisition System

R0A is o#ten usedachie*e bloc5 procusing #re4uency domboth range andmaintaining the sidimensional operatio-../)

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IntrIntr SAR image 4uality re#ers to7

impulse response properties o# radar8proccombination and response o# the system toscatterers (9ipscomb% -..-)

$he per#ormance o# SAR image7

characteri6ed through its impulse responseresponse #unction (IRF) obtained by me

%ground% called point target

("umming , ong% -../: 9ipscomb% -

$he most important 4uality parametbe measured #rom the point target ar

the impulse response !idth (IR) that de#resolution

the pea5 or integrated sidelobe ratio (PS9Rpertains to image contrast

("umming , ong% -../: 9ipscomb% -

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IntrIntr Radar signal beam consists o# mainlobe and

Sidelobe or spilled energy is generated by bnature o# the data that causes un#ocusing ohence the appearing o# target !ill be !orseto interpretate

;enerally% it is considered

sidelobes% or at least redu

more tolerable le*

A6imuth beam pattern o# point target

and image resulted

!indo!8!eighting #unctio

#ormation to impro*e th

image result (Moreira% 3ouse&

9ipscomb% C& (-..-)& SAR Image Quality& Alas5a&

S5olni5% M& (-..3)& Introduction to radar systems$ %rd ed#

@enere% 9& M& (-.3-)& SAR Image &uality Assesment# "ordoDni*ersidad Eacional de "ordoba&

ore ra% &% e &a & ( en e rp ca ng gor mSpaceborne SAR Data !rocessing in Stripmap and ScanSARIBBB $ransactions on ;eoscience and Remote Sensing oSeptember 3

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