In this paper ,The new adjustment model of three-dimensional coordinate transformation-SARC (Step-by-step Adjustment with Restricted Condition-SARC) is presented.

At the same time, non-linear adjustment model of three-dimensional coordinate transformation that resolves the limited conditions with linear models is given.

In view of 3D coordinate transformation nonlinear model,in order to adapt direct search method to solve the transformation parameters,it is necessary to make the model simple and operand small by way of two step measurements as follows.

The accuracy analysis of point-point distance calculated by 3D coordinates;

This paper states the principles of rapid obtaining the 3D coordinates of each point in an image based on the spectrometry.

The effect of the optical error of the cat’s eye retro-reflector on the laser tracking 3D coordinates measuring system and the main sources of the optical error of the cat’s eye retro-reflector are introduced.

In the laser tracking 3D coordinate measuring system,the self-calibration should be made before measurement that would take effect mostly on the result.

The working principle,main functions and characteristics of a laser tracking 3D coordinate measuring system are introduced;the design of laser tracking interferometer which constructs the system is dissertated.

By the total station 3D coordinate method, measuring 3D coordinate of random four points on the surface of ball, the 3D coordinate of ball center can be got after calculation.