Angle Doppler estimation in heavy-tailed clutter backgrounds

Citation
P. Tsakalides et al., Angle Doppler estimation in heavy-tailed clutter backgrounds, IEEE AER EL, 35(2), 1999, pp. 419-436
Citations number
36
Categorie Soggetti
Aereospace Engineering
Journal title
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS
ISSN journal
00189251 → ACNP
Volume
35
Issue
2
Year of publication
1999
Pages
419 - 436
Database
ISI
SICI code
0018-9251(199904)35:2<419:ADEIHC>2.0.ZU;2-D
Abstract
This work describes new methods on the modeling of the amplitude statistics of airborne radar clutter by means of alpha-stable distributions. We devel op joint target angle and Doppler, maximum likelihood-based estimation tech niques from radar measurements retrieved in the presence of impulsive uncor related noise modeled as an alpha-stable random process. We derive the Cram er-Rao bounds (CRBs) for the additive Cauchy interference scenario to asses s the best case estimation accuracy which can be achieved. In addition, we introduce a new joint spatial- and Doppler-frequency high-resolution estima tion technique based on the fractional lower order statistics of the measur ements of a radar array. Simulation results demonstrate that the proposed m ethods can be of interest in the study of space-time adaptive processing (S TAP) for airborne pulse Doppler radar arrays operating in impulsive interfe rence environments.