Citation
Abstract
This article summarizes the methods and results of a covariance calculation for determination of DSN station location and clock parameters using very long baseline interferometry (VLBI) observation of Quasars. Errors of observation are assumed to arise from random (thermal) noise at the receiving antenna, and from errors in modeling the tropospheric delay. The critical error source is seen to be the troposphere: If errors in troposphere modeling are uncorrelated between observations, then 30-50 cm station-location determinations can be obtained with current modeling accuracies; if, however, these errors are correlated, then a factor-of-ten improvement in prediction of the tropospheric delay is needed to achieve this accuracy range.
Details
- Volume
- 42-31
- Published
- February 15, 1976
- Pages
- 21–29
- File Size
- 733.2 KB