This paper discusses the improvement of method by introducing total station,GPS and cross-dating technique to complement the traditional survey method.

Aimed to make up for the deficiency in current survey method of ancient and famous trees,this paper discusses the improvement of method by introducing total station,GPS and cross-dating technique to complement the traditional survey method.

A master ring-width dating chronology for the last 3500 years was developed by cross-dating well-replicated samples from different sources at 26 sites distributed over a region almost 200km across in the northeastern part of the Qaidam Basin in Northwestern China.

Measurements of annual tree-ring width and crossdating are fundamental items for dendrochronology,in that the precision of measurements and accuracy of dating will directly affect the reliability of subsequent analyses.

Research on the Revisable Algorithm for the Error of the Net-radars in Cross-locating;

In order to solve this problem,this paper presents a new cross-locating method of data,where multi-coordinate are set up to locate the needed data.

A method of cross-locating based on ellipsoid model of globe is proposed.

The analysis of cross location to ship-borne microwave OTH radar;

This paper introduces the particle filtering method,analyzes the principle of particle filtering,and applies the particle filtering based on sequential Monte Carlo method to the multi-station cross location only with the angle measurement,gives out the location method and steps.

This paper expands on the passive cross location method in horizontal plane, gives the formula for location solution and error probability, presents the passive location system scheme,conducts the computer simulation,and indicates the simulation results.