GPS-Galileo Working Group C
ARAIM Technical Subgroup
Interim Report

February 2013

In accordance with their 2004 Agreement on the Promotion, Provision and Use of Galileo and GPS Satellite-Based Navigation Systems and Related Applications, the United States and European Union continue bilateral cooperation in the use of Global Navigation Satellite Systems (GNSS).

Working Group C (WG-C) is designed to enhance cooperation for next generation GNSS. One of the objectives of WG-C is to develop integrated applications for Safety-of-Life services. To this end, WG-C established the ARAIM Technical Subgroup. The objective of the Subgroup is to investigate ARAIM (Advanced Receiver Autonomous Integrity Monitoring). The further goal is to determine whether ARAIM can be the basis for a multi-constellation concept to support air navigation worldwide.

The ARAIM consultations have resulted in the public release of the following report, the first milestone in a three-phase effort:

Working Group C, ARAIM Technical Subgroup Interim Report, Issue 1.0

This report is also available at:

The report will be distributed to industry and international standards bodies to inform the community about the progress made in this area thanks to the collaborative work of the United States and the European Union, to call for comments on the main findings, and build a broad consensus towards the future standardization of ARAIM at the international level.

The United States and European Union remain focused on improving GNSS services through the development of both advanced receiver techniques and Satellite-Based Augmentation Systems (SBAS) for integrity monitoring and to improve GNSS navigation positioning, and timing services for all users worldwide.

Take Action: