%0 Journal Article
%T 利用位置测量的单点和两点差分跟踪起始算法的比较研究
%A MALLICK Mahendra
%A LA SCALA Barbara
%J 自动化学报
%P 258-265
%D 2008
%R 10.3724/SP.J.1004.2008.00258
%X ？Weconsidertheproblemofinitializingthetrackingfilterofatargetmovingwithnearlyconstantvelocitywhenposition-only(1D,2D,or3D)measurementsareavailable.ItisknownthattheKalmanfilterisoptimalforsuchaproblem,provideditiscorrectlyinitialized.Wecompareasingle-pointandthewell-knowntwo-pointdifferencetrackinitializationalgorithms.Weanalyticallyshowthatiftheprocessnoiseapproacheszeroandthemaximumspeedofatargetusedtoinitializethevelocityvarianceapproachesinfinity,thenthesingle-pointalgorithmreducestothetwo-pointdifferencealgorithm.Wepresentnumericalresultsthatshowthatthesingle-pointalgorithmperformsconsistentlybetterthanthetwo-pointdifferencealgorithminthemeansquareerrorsense.Wealsopresentanalyticalresultsthatsupporttheconjecturethatthisistrueingeneral.
%K Trackinitiation
%K Kalmanfilter
%K unbiasedestimator
%K minimummeansquareerror
%U http://www.aas.net.cn/CN/abstract/abstract15916.shtml