Research on Multisensor State Fusion Estimation Based on Weighted Least Squares

In the measuring process, some even several sensors expire, but other non-expiration sensor can´t affect to provide the information independently. The system can depend on the information by non-expiration sensor providing to get accurate observed value. The paper analyzes the metrical data based on sensor management, and selects a group of sensors according to qualification, and data of the limited measurement by the group multi-sensors were state fusion estimated. The obtaining measurement results are more accurate than arithmetic mean value algorithm. At last eliminates the disturbance and the uncertainty in the sensor survey, and obtains is more accurate, the more reliable measurement result..