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UnderstandingGPSPrinciplesandApplications
Navigationisdefinedasthescienceofgettingacraftorpersonfromoneplacetoanother.Eachofusconductssomeformofnavigationinourdailylives.Drivingtoworkorwalkingtoastorerequiresthatweemployfundamentalnavigationskills.Formostofus,theseskillsrequireutilizingoureyes,commonsense,andlandmarks.However,insomecaseswhereamoreaccurateknowledgeofourposition,intendedcourse,ortransittimetoadesireddestinationisrequired,navigationaidsotherthanlandmarksareused.Thesemaybeintheformofasimpleclocktodeterminethevelocityoveraknowndistanceortheodometerinourcartokeeptrackofthedistancetraveled.Someothernavigationaidstransmitelectronicsignalsandthereforearemorecomplex.Thesearereferredtoasradionavigationaids.