Abstract Estimation of sevenparameter model by noniterative method is relatively stable，but accuracy is lower; accuracy of estimation by iterative method is higher，but its iteration convergence is vulnerable to the initial value.A method estimating sevenparameter model by the combination of noniterative with iterative method was proposed.The new method resolves the problem that the iterative methods is unsuitable for large rotation angle.Convergence in estimation by the new method is fast and accuracy is higher，and it can be applied to cartesian coordinate with arbitrary conversion because of not required initial values.The checking calculation for some cases proves the method is correct and effective.
Tan Junxiang,Li Shaoda,Yang Ronghao. STUDY ON SEVEN-PARAMETER COORDINATE TRANSFORMATION
MODEL BASED ON COMBINED ESTIMATION OF NON-ITERATION
AND ITERATION[J]. jgg, 2014, 34(1): 131-134.
Tan Junxiang,Li Shaoda,Yang Ronghao. STUDY ON SEVEN-PARAMETER COORDINATE TRANSFORMATION
MODEL BASED ON COMBINED ESTIMATION OF NON-ITERATION
AND ITERATION[J]. jgg, 2014, 34(1): 131-134.
