A Recursive Algorithm for Tracking DOA's of Multiple Moving Targets by Using Linear Approximations

摘要

In this work, a new algorithm for tracking the directions-of-arrival (DOA's) of moving targets by introducing a linear approximation is proposed. The targets are assumed to move with constant angular velocities within a short time and emitting continuously narrow-band signals that impinge on an array of sensors. Therefore the trajectories of targets can be approximated b linear functions of time, which consist of the DOA's an the angular velocities, within the short time. In the condition that the number of targets is known and the out- puts vector of the sensors including the additive white complex Gaussian noises is observed continuously, a cost function which consists of the squared residual error vectors is defined.