现代雷达2025，Vol.47Issue(10)：19-31,13.DOI:10.16592/j.cnki.1004-7859.2025050701
基于首值辅助相位测距的空间翻滚柱状目标多维特征参数估计方法
Multi-dimensional Feature Parameter Estimation Method for Space Tumbling Cylindrical Targets Based on Initial-value-aided Phase Ranging
摘要
Abstract
In missile defense systems,rapid warhead identification and threat assessment are critical.Existing methods often con-sider the missile bus as clutter and rely on the warhead's micro-motion signatures for recognition and early warning.However,fac-tors such as range measurement accuracy,warhead size,and motion patterns limit the precision of micro-motion curve extraction.Furthermore,feature parameter estimation typically depends on prior information,constraining identification and assessment per-formance.To address these issues,an approach is proposed that transforms the bus from a nuisance into a resource by leveraging its feature parameters to assist warhead identification and support threat capability assessment.Specifically,a multi-dimensional feature parameter estimation method for tumbling cylindrical targets based on initial-value-aided phase ranging is developed.The main contributions are as follows:1.A initial-value-aided phase ranging technique is proposed to mitigate off-grid issues and im-prove the precision and robustness of phase measurements by finely extracting first-value micro-ranges and refining overlapping re-gions through gradient-based reassociation.2.A two-step sum-difference estimation algorithm is introduced to eliminate interference terms and enable accurate multidimensional feature parameter estimation without relying on prior information,by exploiting the sum and difference properties of micro-motion curves and their derivatives.Extensive experiments validate that the proposed method a-chieves accurate and robust multidimensional feature parameter estimation for tumbling cylindrical targets,offering strong technical support for true warhead recognition and threat assessment.关键词
宽带信号处理/相位测距/翻滚柱状目标/微动特征提取/参数估计Key words
wideband signal processing/phase-derived range/tumbling cylindrical target/micro-motion feature extraction/param-eter estimation分类
电子信息工程引用本文复制引用
吴悦阳,邵帅,刘宏伟..基于首值辅助相位测距的空间翻滚柱状目标多维特征参数估计方法[J].现代雷达,2025,47(10):19-31,13.基金项目
雷达信号处理全国重点实验室基金资助项目(JKW202305) （JKW202305）
中国博士后科学基金资助项目(2022M722502) （2022M722502）
陕西省博士后资助基金资助项目(2023BSHYDZZ94) （2023BSHYDZZ94）
中央高校基本科研业务费资助项目(ZYTS25143) （ZYTS25143）
航空科学基金、微波成像全国重点实验室开放基金资助 （）
