Inspec keywords: ionospheric electromagnetic wave propagation; troposphere; delays; atmospheric humidity; meteorological instruments; Global Positioning System

Other keywords: error sources; Kolkata; dry tropospheric delay models; water vapour sensing; delay sources; standalone global positioning system receiver; standalone dual frequency GPS receiver; Bangalore; precipitable water vapour

Subjects: Satellite communication systems; Ionospheric electromagnetic wave propagation; Instrumentation and techniques for geophysical, hydrospheric and lower atmosphere research; Atmospheric, ionospheric and magnetospheric techniques and equipment; Data and information; acquisition, processing, storage and dissemination in geophysics; Electromagnetic wave propagation