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About IIG Observatory Instruments and Facilities


Global Navigation Satellite System (GNSS) Receiver
Instrument Details
Make: Trimble; Leica and Serpentrio etc.
Model: Geodetic GNSS Receivers

Specifications:
Reference, Campaign and Kinematic mode observations

Principle
Global Navigation Satellite System (GNSS) refers to a constellation of satellites providing signals from space to locate the geographic location of GNSS receivers anywhere in the world. The GNSS includes USA’s Global Positioning System (GPS), Russia’s Global Navigation Satellite System (GLONASS), Europe’s Galileo, China’s BeiDou Navigation Satellite System (BDS) and India’s Indian Regional Navigation Satellite System (IRNSS). The satellite network incorporates microwave signals that are transmitted to GNSS receivers at ground to provide the position, velocity and timing information that enables many applications that we use in our daily lives. These radio waves are electromagnetic energy that travels at the speed of light. The operation of the GNSS system based on a simple mathematical principle called trilateration to locate the receiver through calculations involving information from a number of satellites. Thus measurement of continuous, campaign and kinematic mode observations can provide the position of GNSS receiver at ground very precisely.

Applications
  • Precise Positioning, Velocity and Time
  • Measurement of Earth’s Lithospheric deformation
  • Ionospheric Total Electron Content (TEC) observation
  • Atmospheric Water Vapor Content measurement
  • In addition, GNSS data is also used to study Space Weather events and other such specialized applications using above basic observed parameters


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