Approaches to Obtaining Beidou Hazardous Pseudorange Bias with the Ordered Weighted Aggregation Operators

摘要

With the development of Beidou system, the globalnavigation satellite system would provide more reliableservice with more accurate PVT estimation. In order toimprove the accuracy and reliability, bias of newlysatellite system should be obtained through a long periodobservation. Based on historical statistical data of thesatellites, the hazardous bias and normal bias can beobtained. Though it is hard for the newly satellite systemsuch as Beidou system , Galileo and others, the approachto obtain hazardous BDS bias with ordered weightedaggregation operators is designed to solve the lack ofstatistical correction model based on weighted operators.Meanwhile, the study of this paper focuses on the GNSSpositioning performance evaluation, and mainly on thehazardous pseudorange bias leading satellites fault. Basedon precisely model and analysis of the measurementserror resources, the calculation algorithm of nominal biasand hazardous bias depending on Ordered WeightedAggregation operators for different constellations namedOWA are studied. Joint-positioning method should beconsidered in order to make full use of the satellites.Adopt Beidou and GPS as the research objectives in theOWA method and the promising contribution can be usedto design the fault detection algorithm.