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Simplistic approach for water vapour sensing using a standalone global positioning system receiver

Content Provider	IET Digital Library
Author	Das, Saurabh Majumder, Souvik Chakraborty, Rohit Maitra, Animesh
Abstract	Precipitable water vapour (PWV) is an important input for numerical weather prediction model, meteorology and high-precision navigational applications. Conventional methods for the determination of PWV using radiosonde are not sufficient owing to poor temporal resolution, whereas radiometer-derived PWV is reliable only in fair weather conditions. Global positioning system (GPS) is a very useful and cost-effective tool to determine PWV continuously in all weather conditions. The processing of GPS data to extract the PWV information is, however, very complicated due to very small effect of the PWV (∼0.5% of total delay) on GPS frequencies than other sources of delay and errors and requires a network of GPS in differential configuration for such purpose. The authors show how the problem can be handled in a standalone dual-frequency GPS receiver in a relatively less complicated manner with reasonable accuracy. The performances of different dry tropospheric delay models are also investigated. The methodology is tested with GPS measurements at Kolkata (22.57°N, 88.37°E) and Bangalore (13.01°N, 77.5°E). The results indicate that the proposed methodology can be implemented for PWV estimation using single GPS receiver with satisfactory performance.
Starting Page	845
Ending Page	852
Page Count	8
ISSN	17518784
Volume Number	8
e-ISSN	17518792
Issue Number	Issue 8, Oct (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rsn/8/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2013.0312
Journal	IET Radar, Sonar & Navigation
Publisher Date	2014-02-27
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Atmospheric Humidity Atmospheric/ionospheric/magnetospheric Technique And Equipment Bangalore Data And Information; Acquisition, Processing, Storage And Dissemination in Geophysics Delay Delay Sources Dry Tropospheric Delay Model Electromagnetic Wave Propagation Error Source Global Positioning System Instrumentation And Technique For Geophysical, Hydrospheric And Lower Atmosphere Research Ionospheric Electromagnetic Wave Propagation Kolkata Meteorological Instrument Precipitable Water Vapour Satellite Communication System Standalone Dual Frequency GPS Receiver Standalone Global Positioning System Receiver Troposphere Water Vapour Sensing
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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