OPTIMAL AVAILABILITY MODELS OF A PHASED ARRAY RADAR

T. Nakagawa and K. Ito
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T. Nakagawa: Department of Marketing and Information Systems, Aichi Institute of Technology, 1247 Yachigusa, Yagusa–cho, Toyota 470–0392, Japan
K. Ito: Technology Training Center, Technical Headquarters, Mitsubishi Heavy Industries, LTD., 1–ban–50, Daikouminami 1–chome, higashi-ku, Nagoya 461–0047, Japan

Chapter 8 in Recent Advances in Stochastic Operations Research, 2007, pp 115-130 from World Scientific Publishing Co. Pte. Ltd.

Abstract: AbstractA phased array radar (PAR) antenna embodies a large number of small element antennas which radiate electromagnetic wave, and it directs electromagnetic wave direction by shifting individual wave phases of these elements. Failed elements have to be detected, diagnosed, localized and replaced at appropriate times to maintain a required radar system performance. However, the maintenance of an antenna should not be made so frequently, because it suspends the radar operation and degrades the radar system availability.This paper considers two typical maintenances (cyclic and delayed maintenances) and two modified maintenances of a PAR where a certain number of survival elements is needed to retain a required performance. When failures of a PAR element antennas occur at a Poisson process, the availability is obtained and optimal policies for these maintenances which maximize them are analytically discussed. Several numerical examples are presented.

Keywords: Operations Research; Uncertainty; Applied Probability; Stochastic Process; Optimization; Decision Science (search for similar items in EconPapers)
Date: 2007
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