Abstract: This paper presents a solution to a second benchmark problem for tracking highly maneuvering targets in the presence of False Alarms (FA) and Electronic Counter Measures (ECM) and involves beam pointing control of a phased array radar. The proposed solution utilizes an Interacting Multiple Model (IMM) algorithm in conjunction with the Integrated Probabilistic Data Association Filter (IPDAF) when there are measurements of uncertain origin. The output of the IMM algorithm is used to compute the time for the next measurement in order to maintain a given level of tracking performance which was established to prevent track loss. A testbed simulation program that includes the effects of target amplitude fluctuations, beamshape, missed detections, target maneuvers, FA, ECM, and track loss was used to evaluate performance. For this benchmark problem, the `best' tracking algorithm is the one that requires a minimum amount of radar energy while satisfying a 5% lost track constraint.!11
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