Javad JNSGyro-4T, Operator'S Manual

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www.javad.com JNSGyro-4T Operator’s Manual 1-5
I N T R O D U C T I O N
Principles of Operation
• Integrity – Fault tolerance allows a position to have greater
integrity, increasing accuracy. Several factors combine to provide
fault tolerance, including:
–Receiver Autonomous Integrity Monitoring (RAIM) detects faulty
GPS and GLONASS satellites and removes them from the position
calculation.
–Wide Area Augmentation System (WAAS) and European
Geostationary Navigation Overlay Service (EGNOS) creates and
transmits DGPS correction messages.
–Five or more visible satellites for only GPS or only GLONASS;
six or more satellites for mixed scenarios.
–Current ephemerides and almanacs.
–Several algorithms to detect and correct faulty information.
Conclusion
GNSS users can use JNS GNSS receivers to collect data from a network
of satellites and control stations to triangulate precise points anywhere
on Earth.
This overview simply outlines the basics of GPS and GLONASS
positioning. For detailed information, visit the JNS website
(http://www.javad.com).