Interleaved Radar Pulse Scheduling for Multitarget Tracking With Multiple Simultaneous Receive Beams

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This paper addresses interleaved pulse scheduling in multitarget tracking with a pulse Doppler phased array radar that can process multiple simultaneous receive beams (MSRB), using element or sub-array level digital beamforming (DBF) architectures. Key constraints in this pulse scheduling such as consistent selection of pulse repetition frequency in an interleaved group of pulses are identified; the scheduling problems of both DBF levels are then formulated as an integer program that minimizes the total tracking time under these constraints. The formulation particularly takes into account the relief of nonoverlapping constraints on received beams by the MSRB processing, which facilitates pulse interleaving with reduced overall track occupancy. While the integer program formulation applies to both levels of beamforming architectures, an additional selection problem, termed disk selection, is presented for the subarray level beamforming case in order to consider a geometric limitation on the directions of received beams in digital postprocessing, called resteering. Heuristic algorithms for the interleaved pulse scheduling problems, which are shown to be NP-hard, are presented to produce feasible solutions in a computationally tractable manner. The practicality of the algorithms, in terms of performance and computation time, is validated by a complexity analysis and numerical simulations.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2019-06
Language
English
Article Type
Article
Citation

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, v.55, no.3, pp.1301 - 1318

ISSN
0018-9251
DOI
10.1109/TAES.2018.2869505
URI
http://hdl.handle.net/10203/263137
Appears in Collection
AE-Journal Papers(저널논문)
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