In this paper, it is applied to the adjustment of closest mine network, inwhich iterative compulation formula of unit weight variance and the cofactor matrices of co-ordinate parameter of the closest mine points and the first order c.

Multi-response-nonlinear LS model for adjustment of GPS network and its hybrid algorithm;

GPS network s optimal design and gross error s rejection;

A study on the effect of GPS network configuration structure upon the result;

A study of surveying precision of little GPS net;

The establishment and application of GPS net in the Yangtze Estuary Deepwater Channel Regulation PhaseⅠ Project, problems appeared during establishment and application, as well as the solutions are intrroduced.

Now, China planed to set up Spatial Data Infrastructure, many regions has established or reformed the GPS nets.

Study on Approve - useful Index about Bount - adjustment Datum of GPS Networks;

To satisfy the need of new Haikou urban construction and basic surveying and mapping work, the GPS frame networks, Ⅲ class GPS networks and Ⅲ class levelling networks are built up, and obtained a large quantities of basic control results.

The related data of GPS networks on the China continent and its peripheral areas are collected from internet sites in this paper.

Projection deformation processing for mine GPS control network;

Discussion about improving small-scale project GPS control network precision method;

Construction survey technology of high precision GPS control network for Liuyang-Changsha diversion project;