›› 2016, Vol. 36 ›› Issue (6): 22-28.doi: 10.16708/j.cnki.1000-758X.2016.0068

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ResearchonspacebornevideoSARsystemdesignandimageformationalgorithm

 LIANG  Jian1,2, ZHANG  Run-Ning1,*, BAO  Min-Feng1   

  1. 1DFHSatelliteCo,Ltd,Beijing100094,China
    2ShenzhouInstituteofChinaAcademyofSpaceTechnology,Beijing100086,China
  • Received:2016-05-20 Revised:2016-08-25 Online:2016-12-25 Published:2016-11-24

Abstract: Asanewmicrowaveremotesensingmode,avideoSARcanprovideacontinuoussurveillanceoveraregionofinterest.ResearchesaboutspacebornevideoSARwerelimited.MostofcurrentresearchesaboutvideoSARonlyfocusonaircraftplatform.AspacebornevideoSARsystemwasdevelopedwiththetransmitterongeostationarysatellitesandthereceiveronthelowearthorbit(LEO)satellites.Therelationshipbetweentheimagingperformanceandthemainsystemparametershasbeenstudied.Thenanimageformationalgorithmwaspresented,whichcouldsatisfytheimagingqualityofvideoSARinhighsquintmodeandavoidunnecessaryduplicationofprocessing.TheDopplersmearandoffsetofthemovingtargetswerereflectedbytheprocessedimages.Meanwhile,thestationarytargetscanbefinelyfocusedon.

Key words: spacebornevideoSAR, bistaticSAR, echomodel, imageformationalgorithm, highsquint, dataoverlap