A Study on Global Monitoring Station Optimization Deployment Method Based on Navigation Satellite Quadruple Observing Coverage

The number and development of ground stations are one of the most important factors, which infect the determent of satellite orbit parameters and clock correction precise, so to study a method to meet the needs of navigation satellite's observing coverage will play a vital role in BeiDou System's monitoring and assessment. This paper firstly described the definition of observing coverage performance, and established a station observation model; secondly, it proposed an innovative method of quadruple observing coverage deployment, and gave a global deployment scheme of 18 stations base on BeiDou System, to meet the needs of full orbit segment quadruple observing coverage to BeiDou MEO satellite; finally, it simulated two deployments which are 18 stations and iGMAS stations, and each deployment's observing coverage performance to BeiDou MEO satellite.