Tri-Satellite Orientation Determination Using Chinese'BeiDou' Satellite Navigation Positioning System

摘要

The paper has studied the method of fast orientationrndetermination based on Chinese "Beidou" SatelliternNavigation & Positioning System. The prime observationrnequations constructed with double difference of thernsatellite carrier phase and the baseline length as basicrninformation, the mathematic model of Tri-Satelliternorientation determination is established. The paper hasrnanalyzed the various error factors thoroughly, whilerncompared the individual advantages and disadvantagesrnbetween the Tri-Satellite and the Double-Satelliternorientation determination as well. The simulationrnexperiments performed based on the Matlab, experimentrnresults are analyzed and the conclusion is drawn: withinrnthe common covering region of the "Beidou" Systemrnsatellites' signal beams, it is possible to realize highrnprecision satellite direction finding using short baselinernin short time span. This technology can be used in manyrnkinds of application background needing preciserndirection reference information such as the initialrnalignment of INS, the artillery field survey, and thernlaunch of tactic missiles, so it has wide applicationrnprospect.