Comparison between AEKF and EKF about homing UAV under passive guidance

Measuring the relative distance, relative speed and target acceleration under knowing only angular information is called a "passive track" problem to target. Because of the noise in measuring result, it is necessary to describe a "passive track" problem by nonlinear random system. The paper compares AEKF with EKF. According to certain hypotheses, we can get statistic results of estimation errors of EKF and AEKF separately by Monte-Carlo simulation. As a result, under the same conditions, real-time estimations with AEKF obviously exceed the ones with EKF during passive guidance of homing UAV.