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Error Correction of Water Vapor Radiometers for VLBI Observations in Deep-Space Networks
2021
Atmosphere
In this paper, we present the design and implementation tests of a water vapor radiometer (WVR) suitable for very long baseline interferometry (VLBI) observation. We describe the calibration method with an analysis of the sources of measurement errors. The experimental results show that the long-term measurement accuracy of the brightness temperature of the water vapor radiometer can reach 0.2 K under arbitrary ambient conditions by absolute calibration, receiver gain error calibration, and
doi:10.3390/atmos12121601
fatcat:r66bcdcq6vfa7pl3rwflae32q4