A deviation correction method of parameter estimation value to combined orbit determination (COD) nonlinear regression model based on an iterative algorithm was put forward by deducing the deviation and mean square error expres-sions of COD model estimation value from theoretical angle.

On the natural self-sealing reference of circular division dynamic measurement and dynamic measurement error correction;

Mechanism and implementation of error correction for 3D strata model;

An error correction method for piezoresistive pressure transducer by software;

The established forecast model of mutation monotone or nomonotone initial sequence adjusted by residual error amendment and period amendment several times.

To improve the accuracy of load forecasting, by use of residual error amendment forecasting model based on real number output and fitting residual error by trigonometric function, a fuzzy.

Interface strain transfer mechanism and error modification of embedded FBG strain sensors;

Finally,the error modification method beneficial to the precision upgrading of realizing the low cost was presented.