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Finite-horizon scheduling of radar dwells with online template construction (2004)
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| Venue: | IEEE Real Time Systems Symposium |
| Citations: | 4 - 0 self |
BibTeX
@INPROCEEDINGS{Gopalakrishnan04finite-horizonscheduling,
author = {Sathish Gopalakrishnan and Marco Caccamo and Chi-sheng Shih and Chang-gun Lee and Lui Sha},
title = {Finite-horizon scheduling of radar dwells with online template construction},
booktitle = {IEEE Real Time Systems Symposium},
year = {2004},
pages = {1--3}
}
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Abstract
Timing constraints for radar tasks are usually specified in terms of the minimum and maximum temporal distance between successive radar dwells. We utilize the idea of feasible intervals for dealing with the temporal distance constraints. In order to increase the freedom that the scheduler can offer a high-level resource manager, we introduce a technique for nesting and interleaving dwells online while accounting for the energy constraint that radar systems need to satisfy. Further, in radar systems, the task set changes frequently and we advocate the use of finite horizon scheduling in order to avoid the pessimism that is inherent in schedulers that assume a task will execute forever. We also develop the notion of modular schedule update which allows portions of a schedule to be altered without affecting the entire schedule, thereby simplifying the scheduler. Through extensive simulations we validate our claims of providing greater scheduling flexibility without compromising on performance when compared with earlier work based on templates constructed offline. 1.
Keyphrases
finite-horizon scheduling online template construction radar dwells radar system maximum temporal distance finite horizon scheduling entire schedule feasible interval radar task successive radar dwells temporal distance constraint energy constraint modular schedule update extensive simulation high-level resource manager
