Evolving ground system architecture requirements for the National Polar-orbiting Operational Environmental Satellite System (NPOESS). - James L. Duda; Joseph E. Mulligan; Joy M. Henegar (IGARSS, 2002)

Capabilities of SafetyNet™ (SN) ground systems architecture for the National Polar-orbiting Operational Environmental Satellite System (NPOESS). - James L. Duda; Joseph E. Mulligan; James Valenti; Michael Wenkel (IGARSS, 2004)

National Polar-Orbiting Operational Environmental Satellite System Preparatory Project (NPP) Interface Data Processing Segment (IDPS). - Joseph E. Mulligan; Marge Ripley (IGARSS, 2010)