基于MapReduce和OpenMP混合编程的高分三号数据并行转换算法  

Parallel Conversion Algorithm of GF-3 Data Based on MapReduce and OpenMP Hybrid Programming

作　　者：邱祥峰[1] QIU Xiangfeng(Xiamen KINGTOP Information Technology Co.,Ltd.,Xiamen 361008,China)

机构地区：[1]厦门精图信息技术有限公司,福建厦门361008

出　　处：《测绘与空间地理信息》2024年第8期35-36,41,共3页Geomatics & Spatial Information Technology

基　　金：2021年福建省科技项目(中科院STS项目)——基于时空智能的应急风险评估与指挥系统(2021T3065)资助。

摘　　要：高分三号03与02、01卫星一起成功组网形成我国第一个海陆三星雷达卫星星座。针对PolSARpro软件存在高分三号数据转换较慢的问题,提出了一种按照该软件的数据格式要求对高分三号数据进行高效并行转换的算法。该算法基于MapReduce和Open MP进行混合编程,实现高分三号极化数据快速准确地转化为S2格式,最终采用KingMap V9.0软件编码实现了该算法并对真实的高分三号数据进行测试,验证了该算法的可扩展性、高效性、正确性和可行性。The successful networking of Gaofen-303 satellite with the Gaofen-301 and Gaofen-302 satellites forms China’s first land-sea radar satellite constellation.Aiming at the issue of slow conversion of Gaofen-3 data by the PolSARpro software,this paper proposes an efficient parallel conversion algorithm according to the data format requirements of its software based on MapReduce and OpenMP hybrid programming,which can quickly and accurately convert GF-3 polarization data into S2 data format.The algorithm is implemented on the KingMap V9.0 software and tested using real Gaofen-3 data,which verifies the extendibility,efficiency,correctness and feasibility of the algorithm.

关 键 词：高分三号 合成孔径雷达 复数散射矩阵 OPENMP MAPREDUCE KingMap 

分 类 号：P209[天文地球—测绘科学与技术]