Comparison of Global Positioning System and Water Vapor Radiometer Wet Tropospheric Delay Estimates
نویسنده
چکیده
Comparison of simultaneous Global Positioning System (GPS) and water vapor radiometer (WVR) measurements at Goldstone over 82 days in the period between June 25 and October 6, 1996, shows agreement in zenith wet path-delay estimates to <6 mm rms. The level of agreement is consistent with the expected levels of GPS and WVR errors. This method shows considerable promise for improving the accuracy of the water vapor emission model. Future GPS/WVR measurements at a wet site using one additional instrument (a microwave temperature profiler) are expected to reduce the uncertainty in this emission model to <2 percent.
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