电子学报2016，Vol.44Issue(11)：2618-2624,7.DOI:10.3969/j.issn.0372-2112.2016.11.008
基于动态字典的卡车目标微动参数估计方法
Micro-motion Para meters Esti mation for Truck Target Based on Dyna mic Dictionary
摘要
Abstract
Micro-Doppler generated by rotation of wheels is a unique characteristic of wheeled vehicles.Extraction of micro-motion parameters of truck,etc.will offer important proof for classification and recognition of ground vehicles.First-ly,the echoes model of truck was established under narrowband signal,the mathematic expressions of Doppler induced by non-rotation scatterers and micro-Doppler induced by rotation scatterers were deduced.Secondly,corresponding dictionary bank consists of micro-motion parameters was constructed for matching pursuit,and convex optimization model under noisy condition was established for extraction of micro-motion parameters.Thirdly,for avoiding the heavy computation and storage burden induced by parameters extraction based on overcomplete dictionary,the smaller dynamic dictionary was structured af-ter deduction of the convex function about micro-motion parameters set,the accurate and faster parameters estimation was obtained by dynamic adaptation of the dictionary and iterative approach to optimal solution under Least Square criteria.The effectiveness and robustness of the method were proved by the simulation results.关键词
卡车目标/微多普勒/微动参数估计/动态字典Key words
truck target/micro-Doppler/micro-motion parameters estimation/dynamic dictionary分类
信息技术与安全科学引用本文复制引用
李开明,张群,雷磊,罗迎..基于动态字典的卡车目标微动参数估计方法[J].电子学报,2016,44(11):2618-2624,7.基金项目
国家自然科学基金（No．61471386）；陕西省统筹创新工程-特色产业创新链项目 （）
