Ben Dean_ 使用 LEO 卫星星座提供 GNSS 增强服务的替代方法.pdf

1、AN ALTERNATIVE DELIVERY OF GNSS AUGMENTATION SERVICES USING LEO SATELLITE CONSTELLATIONSBen Dean,Senior ManagerGNSS AUGMENTATIONWhat do we mean by GNSS Augmentation?INDUSTRY GUIDELINESWhat are the current industry guidelines for use of GNSS Augmentation?It is recommended that at least two fully inde

2、pendentpositioning systems are installed and available.(4.1.4)When considering redundancyof systems installed,the following should be considered:Redundancy of hardware(including spares):Typical installations will require that a minimum of two independentsatellite positioning systems are installed.Re

3、dundancy of augmentation delivery links:Most installations can provide redundancy in the data link used.Separate and individual data links may offer some protection from interference or atmospheric conditions.Often the selection of a different data link introduces the option of also selecting a diff

4、erent positioning technique;Redundancy of positioning methods:Two or more independent systems provide the potential for different algorithms and techniques to be used.Current GuidelinesGuidelines for GNSS Positioning in the Oil and Gas IndustryIMCA S 015/IOGP 373-19 February 2021Operational Awarenes

5、s(4.5)Loss of correction data Ensure redundant and diverse correction linksRisk Management(4.5.2)Current GuidelinesGuidelines for GNSS Positioning in the Oil and Gas IndustryIMCA S 015/IOGP 373-19 February 2021ItemCommentRiskPossible Mitigation MeasuresPossibility of OccurrenceSeverityCommunication

6、SatelliteSome service providers offer(on a commercial basis)a choice of broadcast satellites or a back-up satellite covering the same world region.LowHighUse a different satellite data linkUse a different data link technologySatellite Based Systems.Each system should have double redundancy in the di