BIAS ERROR ESTIMATION DEVICE, BIAS ERROR ESTIMATION METHOD, AND BIAS ERROR ESTIMATION PROGRAM

摘要

PROBLEM TO BE SOLVED: To estimate a bias error of each sensor used in a target observation sensor network.SOLUTION: A bias error estimation device of the present invention calculates the target state value of a global coordinate system, with a bias error at a time of day tof the observation target of a plurality of sensors taken into account, on the basis of the target state value of a global coordinate system at a time of day tof the observation target of each sensor and the bias error of each sensor at an initial time or a time of day tof a bias error set for each sensor; sums weighted target state values of a global coordinate system, with a bias error at a time of day tof the same target observed by the plurality of sensors taken into account, and calculates the interaction value of a global coordinate system at a time of day tof the observation target of each sensor; calculates a bias error at a time of day tof the observation target of each sensor on the basis of the target state value of a global coordinate system at a time of day tof the observation target of each sensor and the interaction value of a global coordinate system at a time of day tof the observation target of each sensor; and transmits the bias error as a bias error at a time of day tto a target state value calculation process.SELECTED DRAWING: Figure 2