创意画之彩纸拼贴.ppt

2008年10月四川大学学报(自然科学版) 第45卷增刊2 Journal ofSichuan University(Natural Science Edition) 文章编号:0490—6756(2008)Suppl-0182一04 混合坐标系singer模型跟踪突发机动目标改进算法研究胡杰,刘健波,王尚平,蒲柳() 摘要:针对混合坐标系下singer模型对跟踪弱机动目标初期误差出现跳变现象,且对突发机动跟踪自适应能力较差的情形,本文提出一种改进算法,通过引入渐消因子,实时调节一步预测协方差,以此调节滤波器增益,增强了滤波器跟踪突发机动目标的适应能力,,本文算法对突发机动自适应跟踪能力和弱机动目标跟踪精度都有提高. 关键词:机动目标跟踪;singer模型;混合坐标系;渐消因子中图分类号:TP391 文献标识码:A An improved maneuvering target tracking algorithm based on the singer model and hybrid coordinate HUJie,LIUJian—Bo,WANG Shang—Ping,PULiu (College puter,Sichuan University,Chengdu 610064。China) Abstract:Consider mon Maneuvering target tracking error appearing thehopping phenomenon in theearly and worse adaptive tracking performance forsudden maneuver,A new improved maneuvering target tracking algorithm presented based on thesinger model inHybrid coordinate intro- ducing a fading factor,this algorithm,which can adj ust filtergainreal—time,improves the adaptive tracking performance greatly when there asudden maneuver,and improves precision mon maneuvering targets results show that,the precision and adaptive tracking perform— ance ofthisalgorithm much better. Key words:Maneuvering target tracking,singer model,hybrid coordinate,fading factor 1 引言机动目标跟踪应用中,目标运动通常是在直角坐标系下建模,,而两种坐标下状态转化却是非线