机载多维度SAR航空观测系统实验初步进展周良将汪丙南王亚超*朱勇涛焦泽坤宋晨王钟斌韩冬丁赤飚(中国科学院空天信息创新研究院北京100190)(微波成像技术国家级重点实验室北京100190)摘要：随着合成孔径雷达(SAR)技术的发展，从极化、频率、角度和时相等多个维度空间联合观测成为SAR发展的重要趋势，但维度联合观测的系统与实验少有报道。该文概要介绍了机载多维度SAR(MSJosSAR)航空观测系统的能力，归纳总结了该系统的技术特点。提出多维度SAR一致性成像方法，实现多波段成像后的配准精度优于1个像元。分析了多波段极化角度特征谱、多方位角层析3维结构重建、多时相相干变化检测等3种SAR多维观测量的初步实验结果，验证了系统的多维观测能力。关键词：机载SAR；多维度SAR；SAR一致性成像；SAR3维成像；相干变化检测中图分类号：TN957.52文献标识码：A文章编号：1009-5896(2023)04-1243-11DOI:10.11999/JEIT220250PreliminaryProcessofAirborneMultidimensionalSpaceJoint-observationSARSystemZHOULiangjiangWANGBingnanWANGYachaoZHUYongtaoJIAOZekunSONGChenWANGZhongbinHANDongDINGChibiao(AerospaceInformationResearchInstitute,ChineseAcademyofSciences,Beijing100190,China)(NationalKeyLaboratoryofMicrowaveImagingTechnology,Beijing100190,China)Abstract:WiththedevelopmentofSyntheticApertureRadar(SAR)technology,MultidimensionalSpaceJoint-observation,whichincludespolarimetry,frequency,angle,andtimespaces,hasbecomeanimportanttrendinSARdevelopment,buttherearefewreportsonsystemsandexperimentsaboutit.Inthispaper,thecapabilitiesoftheairborneMultidimensionalSpaceJoint-observationSAR(MSJosSAR)systemarebrieflydescribedandthetechnicalcharacteristicsofthesystemaresummarized.ASARconsistentlyimagingalgorithmisproposedandtheregistrationaccuracyofMultibandimageisbetterthan1pixel.Thepreliminaryprocessofthreemultidimensionalspacejoint-observations,includingmulti-bandpolarizationanglefeaturequantity,multi-aspecttomographythree-dimensionalreconstruction,areanalyzed,multitemporalcoherencechangedetection,whichverifytheabilityofmultidimensionalspacejoint-observation.Keywords:AirborneSAR;MultidimensionalSpaceJoint-observationSAR(MSJosSAR);SARconsistentlyimaging;SAR3Dimagi...
