The Decision Methods of the Altitudes of GPS Points;

Research of influence and correction of GPS antenna phase center deviation on GPS height;

The application of support vector machine method in GPS height transformation;

Converting GPS height by a new method based on neural networks;

The multi-aspect function application in GPS altitude fitting;

The optimum selection of GPS altitude fitting model

Reasearch on Increasing GPS Elevation Accuracy;

By combining semiparametric survey adjustment Models with the least squares collocation to deal with GPS elevation, the calculation method of a positively definite regularity matrix is deduced and the corresponding results are obtained.

This paper research the design and establishment of all kinds of GPS networks systematically and discusses the design, field observation and implementation of the GPS control network with high accuracy, GPS engineering control network, special GPS control network, and the GPS height network.

A vast amount of GPS survey data make known that the GPS height anomaly variations is evenly and echelon in parts of an area.

On the basis of the GPS height survey results in many provincial administrative regions of China, using interpolation and extrapolation methods, the GPS height anomaly map of China has been drawn up, which possesses certain applicable value.