Results of Leveling Refraction Tests by the National Geodetic Survey

1-meter accuracy Allan Variance antenna bandwidth bench marks brass C&GS Annual Report calibration corrections calibration values CALIFORNIA catalogs changes components coordinates determined Doppler Earth orientation Earth orientation parameters earth rotation effects elevation differences epoch error ERSITY estimates Figure Fischer rods flux density Gaithersburg Geodesy graduation gravitational wave HP-IB hydrogen maser interferometer intervals Invar Invar strip ionospheric Kashima Kukkamaki leveling rods LIBRARY Long Baseline Long Baseline Interferometry measurements meter mobile VLBI NASA National Geodetic Survey National Ocean noise Observatory Onsala operation paraffin-saturated parameters period phase polar motion precision processing processor quasars Radio Interferometry radio sources reference frame refraction right ascension SAN DIEGO satellite scribe marks Session sight distances source positions Table tape techniques temperature tracking troposphere U.S. Naval Observatory UNIVERSITY VLBI VLBI data VLBI experiments VLBI stations VLBI system Wade and Johnston X-band