Asian Surveying & Mapping
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Outsight Expands into Asia-Pacific with a New Hong Kong Office to Propel the Deployment of of It’s 3D Lidar Software
Following its recent expansion across Europe with the establishment...
Hexagon and Hitachi Zosen sign agreement to provide TerraStar-X Enterprise corrections in Japan
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China launches “Macao Science 1” space exploration satellites
JIUQUAN, May 21 (Xinhua) -- China successfully sent two...
Isro’s Chandrayaan-3 launch likely on July 12
The Indian Space Research Organisation is expected to launch...
SpaceX sends Saudi astronauts, including nation’s 1st woman in space, to International Space Station
Saudi Arabia’s first astronauts in decades rocketed toward the...
Singapore Tourism Board partners with Google to create Augmented Reality tours
Google’s ARCore and the Singapore Tourism Board (STB) launched...
India’s New Space Policy Allows Full Private Sector Involvement
Long dominated almost exclusively by the government, the Indian...
Bayanat, Yahsat and ICEYE announce an ambitious program to broaden commercial opportunities across the UAE space-ecosystem
The program aims to develop a constellation of five LEO...
International Code Council and Dubai Municipality Sign Memorandum of Understanding to Promote Safe, Innovative Construction
The collaboration supports the position of the Emirate of...
Malaysian Space Agency receives Geospatial World Excellence Award for use of technology in monitoring rice crops
KUALA LUMPUR, May 7 — The Malaysian Space Agency...

December 14th, 2011
Paper: Open Source GNSS Reference Server for Assisted-Global Navigation Satellite Systems

Assisted-Global Navigation Satellite Systems (A-GNSS), or Assisted-Global Positioning Systems (A-GPS) in particular, are now commonly accepted as an effective way to reduce the time-to-first-fix (TTFF) in GNSS-unfriendly environments, e.g. in areas of weak GNSS signals. Today’s location-based service (LBS) devices such as GPS-enabled mobile phones and personal digital assistants (PDA) rely on A-GPS; however, such commercial devices are equipped with an integrated A-GPS chip that makes customisation very difficult. The Open Source GNSS Reference Server (OSGRS) provided by the University of New South Wales is an open source Java application that can generate the necessary data for A-GPS clients. The
GNSS Reference Interface Protocol (GRIP), based on extensible mark-up language (XML), is employed as the OSGRS interface protocol. This paper describes the current status of OSGRS: a client simulator is available open-source; client software which supports four different types of A-GPS-enabled receivers has been developed and used to test OSGRS. The performance of the OSGRS is analysed based on intensive tests. The challenges for OSGRS and future work are also discussed. Read More