| abstract |
The invention discloses a method for estimating the crustal motion velocity field of a GNSS reference station considering nonlinear changes. The invention considers the influence of nonlinear changes of GNSS reference stations, random models, etc. on the velocity estimation of the reference station, and adopts the latest solution strategy to obtain ITRF2014 Under the framework of GNSS reference station coordinate time series, combined with real physical correction model, abnormal position gross error, step detection and other methods to establish and separate the nonlinear change of reference station coordinate time series; adopt the GNSS reference station coordinate time based on singular spectrum analysis method Sequence background noise model determination technology, on the basis of which an improved Bayesian information minimum criterion noise model estimation method is proposed, and a crustal velocity field estimation method for GNSS reference stations is provided, which provides an accurate and reliable method for crustal velocity field estimation. Velocity Field Data Basis. |