Abstract:

At present,the wide area differential(WAD)positioning is a cutting-edge issues for application of satellite navigation system,which can provide sub-meter or even centimeter-level accuracy real-time positioning,and the comprehensive evaluation of the products is critical for users.In this paper,a real-time product evaluation scheme is designed,based on the precision orbit,clock,and ionospheric product of wide area differential system.The scheme solves the key problems for real-time product quantitative evaluation,and realizes the automatic monitoring for the product continuity,timeliness,effectiveness and real-time positioning,as well as the automatic post analysis of the product accuracy.The paper provides quantitative reference index of real-time product properties for wide area differential users.

Key words: products properties, index design, real-time monitoring, accuracy evaluation