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GRASP Lab Seminar 2004-2005
October 1, 11:00 AM, Levine Hall 307.
Suhada
Jayasuriya
Department of Mechanical Engineering, Texas AandM
Phantom Track Generation Using Multiple Electronic Combat Air Vehicles (ECAVs)
Abstract: Multiple cooperating ECAVs are used to generate coherent phantom radar tracks to deceive a networked radar air defense system. Each ECAV uses a range delay deception transponder, which delays the radar pulses received by the vehicle and sends them back to the radar. The result is an erroneous target range seen by the radar for the ECAV location along the line of sight. By precisely coordinating the dynamic location of the spurious ECAV by a cooperating team of ECAVs so that the entire radar network sees the same spurious ECAV it is possible to deceive enemy radar. In order to accomplish this objective the vehicles must tightly coordinate their highly coupled actions to generate a coherent phantom track. Considered is a simplified version of the problem where the ECAV motion and phantom track are constrained to be in the plane with speed constraints on the phantom point and the ECAV. One additional requirement for the successful execution of the intended deception is the need to have minimum communication between ECAVs. While it is possible to formulate this electronic attack concept as a traditional two point boundary value problem in optimal control it is likely to involve a high degree of communication between the ECAVs to generate a consensus on a particular phantom track. Instead we propose a sub-optimal strategy which involves finite dimensional searches with a need to communicate only four elements of a vector at a given instant of the trajectory generation. The basic idea behind the proposed algorithm and some preliminary results will be presented for a specific scenario where each ECAV has limited speed with no constraints on the turn rate.
Biography: Dr. Jayasuriya is the Inaugural Holder of the Meinhard H. Kotzebue Professorship in Mechanical Engineering and served as the Head of Mechanical Engineering, at Texas A&M University from 1997-2001. He received the ASME's Gustus L. Larson Memorial Award for outstanding achievement in Mechanical Engineering within ten to twenty years following graduation. He received the ASME, DSCD Outstanding Investigator Award in 2003. He joined Texas A&M University as an Associate Professor in July 1987. Prior to that since 1983, he served as an Assistant Professor at Michigan State University in East Lansing, MI. In 1991-92 he was a Visiting Professor at the University of California, Berkeley. In the summer of 1995 he was a NASA Faculty Fellow and in the summers of 1996 and 1997 he was a Distinguished Faculty Fellow at the David Taylor Naval Research Facility. He received a B.Sc. (Hons) degree from the University of Sri Lanka in 1977 and a M.S. and Ph.D. from Wayne State University in 1980 and 1982, respectively, all in Mechanical Engineering. He was a University Graduate Fellow in 1981, and Thomas C. Rumble Fellow in 1982. He was awarded a Halliburton Professorship in 1991-92, was TEES Research Fellow in 1993-94 and 1994-95, for his outstanding contributions and excellence in research. A registered professional engineer (P.E.) in the state of Texas, Professor Jayasuriya was named a Fellow of ASME in 1994. He is a senior member of IEEE and is a member of SIAM and ASEE. He is the Editor of the ASME Journal of Dynamic Systems, Measurement and Control and is the General Chair of the 2005 American Control Conference. Dr. Jayasuriya has published over 200 technical articles in the areas of robust control, nonlinear control and active control of vibrations and has contributed to four books. His research has unambiguously resolved a number of issues (some that remained controversial for over 30 years) related to stability and performance of QFT designs. He is a leading authority in QFT. His most recent work has been directed towards the development of intelligent sensors and the role of actuator saturation in uncertain, nonlinear systems
