Current State of IGS Analysis: Quality Assessment

T. Herring, and T. Springer

In this paper we examine the current state of the IGS
analysis of GPS data and the needs of users.  Since the
initial sessions of the meeting examines near real-time
analysis issues, we will examine the conventional IGS
products.  We will examine the needs of users for knowing
the quality of both IGS products, and more fundamentally
the quality of indivual satellites and stations in the
IGS network.  There already exists a number of methods
that can be used to assess IGS quality and we will review
the contents of these exisiting mail, ftp, and web sites.
We will consider how best to report marginal
satellites and sites to users particularly in the form of
interactive web-based tools that could be developed, and how
to integrate the exisiting information into a coherent assessment
tool for users.