中国空间科学技术

中国空间科学技术

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空间目标一维距离像重构的线性规划方法

杜小勇,胡卫东,郁文贤   

  1. 国防科学技术大学,国防科学技术大学,国防科学技术大学 长沙410073 ,长沙410073 ,长沙410073
  • 发布日期:2004-12-25

Linear Programming Method for the Reconstruction of High Range Resolution Profiles of Space Target

Du Xiaoyong Hu Weidong Yu Wenxian (National University of Defense Technology, Changsha 410073)   

  • Online:2004-12-25

被引次数

5

摘要： 高分辨一维距离像是空间目标故障诊断与识别的重要手段。针对典型的空间目标 ,文章采用稀疏成份分析法研究了一维距离像的超分辨重构和特征提取问题。将处理实信号的基寻踪方法推广到复信号 ,并利用约束最小二乘解提出了一种次优的距离像重构算法 ,实现了空间目标散射中心的有效分离。数值结果验证了其合理性和有效性。

关键词: 成份分析, 线性规划, 故障诊断, 空间物体

Abstract: High Range Resolution(HRR)profile is an important feature for the fault diagnosis and identification of space target. Aiming at the classic space targets, this paper discusses the reconstruction and feature extraction of HRR profiles by sparse component analysis. The basis pursuit method which processes real signal is generalized to complex-valued radar returns, subsequently a suboptimal supperreolution algorithm to reconstruct HRR profiles is presented on the basis of constrained least square solution, which can effectively separate the dominant scatters of space target. The numeric results prove the reasonability and validity.