空军工程大学学报（自然科学版）2011，Vol.12Issue(4)：78-81,4.DOI:10.3969/j.issn.1009-3516.2011.04.017
高阶复合完全匹配层的应用研究
Application of High -order Composite Perfectly Matched Layer
摘要
Abstract
Generally, the distance information cant be obtained in maneuver target tracking under the interference environment. In order to get a more accurate tracking result, a new passive tracking algorithm is proposed. Since there is a nonlinear relation between the state variables and the measurements in passive tracking, in the algorithm firstly the least square principle is adopted to pretreatment angle measurements, then the pretreatment result is taken as an input to perform the interacting multiple model filtration. By this, the error brought by the linearization process of the nonlinear measure equation is reduced. However, the accuracy of tracking still cannot be guaranteed because of the localization brought by the fixed structure model muster in interacting multiple model algorithm. In order to enhance the ability to self - adapt to the maneuver target mode, the paper introduces a sequential likelihood ratio test to adjust the model muster, which can reduce the competition among models and ensure the accuracy of tracking. To verify the effectiveness of this algorithm, under the same experiment conditions, using two algorithms to estimate the definite flight track respectively, the simulation shows that the use of the improved algorithm can further improve the accuracy of tracking.关键词
时域有限元方法/完全匹配层/复频移完全匹配层/各向异性完全匹配层Key words
least square/ interacting multiple model/ variable structure/ sequential likelihood ratio分类
信息技术与安全科学引用本文复制引用
李源,许家栋..高阶复合完全匹配层的应用研究[J].空军工程大学学报（自然科学版）,2011,12(4):78-81,4.基金项目
陕西省科学技术研究发展计划资助项目(2010K06-16) （2010K06-16）
