Convolution Backprojection Image Reconstruction for

Convolution Backprojection Image Reconstruction for

ID:40357754

大?。?.32 MB

頁數(shù):13頁

時間:2019-07-31

Convolution Backprojection Image Reconstruction  for_第1頁
Convolution Backprojection Image Reconstruction  for_第2頁
Convolution Backprojection Image Reconstruction  for_第3頁
Convolution Backprojection Image Reconstruction  for_第4頁
Convolution Backprojection Image Reconstruction  for_第5頁
資源描述:

《Convolution Backprojection Image Reconstruction for》由會員上傳分享,免費在線閱讀,更多相關(guān)內(nèi)容在學術(shù)論文-天天文庫

1、IEEETRANSACTIONSONIMAGEPROCESSING,VOL.I.NO.4,OCTOBER1992505ConvolutionBackprojectionImageReconstructionforSpotlightModeSyntheticApertureRadarMitaD.Desai,Member,IEEE,andW.KennethJenkins,Fellow,IEEEAbstract-Syntheticapertureradar(SAR)imagereconstruc-tob

2、eaveryeffectivemicrowaveimagingtechniquefortionfallsintotheclassofinverse(deconvolution)problems.Ahighresolutiongroundmapping,remotesensing,andsur-spotlightmodeSARsystemobtainslineintegrals(projections)veillanceapplications.Recently,aspartofNASA’sMa-o

3、fthegroundreflectivityatvariouslookanglesastheradarplatformprogressesalongtheflighttrajectory.TheimageofgellanmissionaSARwasplacedintoorbitaroundVenusthegroundareaisthenreconstructedfromthissetofprojec-inthehopeofprovidingmanwithhisfirstcompleteunob-t

4、ions.Conventionally,theSARimagehasbeenproducedbyastructedviewofthiscloud-coveredplanet’ssurface.directFourierreconstructionalgorithmreferredtohereastheSARsystemsyieldimagesintwodimensions,gener-2-DinverseFFTmethod.Thismethodhastwomajorprob-allycalledt

5、herangeandtheazimuth(crossrange)inthelems:1)duetothebatchprocessingnatureoftheFFT,allre-turnsmustberecordedbeforetheimageprocessingcanbegin,slantplane.Theazimuthcoincideswiththedirectionofand2)apolar-to-Cartesianinterpolation,whichiscomputa-theflightp

6、athoftheradarplatform.Therangedirection,tionallyintensiveanderrorproneduetointerpolationinaccur-whichisthecoordinatethatisorthogonaltotheazimuth,acies,isnecessarybeforea2-DinverseFFTcanbeperformed.isthedirectionoftransmittingandreceivingthesignal.Inth

7、ispaper,amethodbasedonaconvolutionbackprojec-Inthespotlightmodeofoperationtheantennaissteeredtion(CBP)algorithmispresented.CBPisawidelyusedtech-niqueincomputer-aidedtomography(CAT).TheCBPalgo-throughouttheflightintervaltoilluminateafixedareaofrithmhas

8、beenmodifiedandappliedtoimagereconstructioninterest,enablingonetorecordechoesatappropriatepo-fromSARdata.Aquantitativeevaluationusingcomputersim-sitionsalongtheflightpath,andthroughsignalprocess-ulationoftheCBPalgorithmforspotlightmodeSARispre

當前文檔最多預覽五頁,下載文檔查看全文

此文檔下載收益歸作者所有

當前文檔最多預覽五頁,下載文檔查看全文
溫馨提示:
1. 部分包含數(shù)學公式或PPT動畫的文件,查看預覽時可能會顯示錯亂或異常,文件下載后無此問題,請放心下載。
2. 本文檔由用戶上傳,版權(quán)歸屬用戶,天天文庫負責整理代發(fā)布。如果您對本文檔版權(quán)有爭議請及時聯(lián)系客服。
3. 下載前請仔細閱讀文檔內(nèi)容,確認文檔內(nèi)容符合您的需求后進行下載,若出現(xiàn)內(nèi)容與標題不符可向本站投訴處理。
4. 下載文檔時可能由于網(wǎng)絡波動等原因無法下載或下載錯誤,付費完成后未能成功下載的用戶請聯(lián)系客服處理。