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自动化学报 2005
基于HMM的地形高度匹配算法, PP. 960-964 Keywords: TAN,TEM,HMM,Viterbialgorithm,INS Abstract: ？Terrain-aidednavigation(TAN)usesterrainheightvariationsunderanaircrafttorenderthepositionestimatetoboundtheinertialnavigationsystem(INS)error.Thispaperproposesanewterrainelevationmatching(TEM)model,viz.Hidden-Markov-model(HMM)basedTEM(HMMTEM)model.Withthegivenmodel,anHMMTEMalgorithmusingViterbialgorithmisdesignedandimplementedtoestimatethepositionerrorinINS.ThesimulationresultsshowthatHMMTEMalgorithmcanbetterimprovethepositioningprecisionofautonomousnavigationthanSITANalgorithm.
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