Six common filters are simply introduced at present,and a new KALMAN filter is put forward based on adaptive noise and the arithmetic formula is given in details.

In order to overcome the shortcomings of UKF,such as obvious influences from the values of initial parameters,the uncertainness of systemic noises and the influences of vehicle disturbances in movements,the adaptive estimation principle is applied for UKF.

Based on a deep investigation, a multiple model adaptive estimation method for stochastic systems is dealt with in this paper, and it is applied to INS/ESGM integrated navigation system.

For the slow changes of random drift model s parameters during the spin-up of the Dynamic Tuning Gyro (DTG) and the different coefficients for different spin-up, an adaptive estimation to the coefficients of random drift model of DTG with Least Square Lattice (LSL) algorithm was introduced.

Based on that, a new adaptive estimator of target state - the interacting dual adaptive models estimator is set up.

The implication of the adaptive noise cancellation to suppress the electrosurgical interference from the ECG monitor;

On the basis of analyzing 4 layers forward artificial neural networks which is based on BP algorithms and basic principles of the adaptive noise cancellation system,set up an adaptive noise cancellation system based on artificial neural network.

An adaptive noise cancellation method is presented to extract desired signal from array cross talk signals, and is used to microphone array speech enhancement.