TY - GEN
T1 - Radar clutter mitigation via space-time wavefront adaptive sensing
AU - Bilik, Igal
AU - Kazanci, Ognz
AU - Krolik, Jeffrey
PY - 2008/9/16
Y1 - 2008/9/16
N2 - Space-time adaptive processing (STAP) in complex radar propagation and inhomogeneous clutter environments is often precluded because neither the target wavefront is sufficiently known nor is signal-free training data available. In recent work, wavefront adaptive sensing (WAS) was proposed to overcome these challenges by combining minimum variance (MV) adaptive processing and blind source separation (BSS) for distributed sources. In this paper, WAS is compared with conventional BSS and MV processing both analytically and via simulation. In an over-the-horizon radar (OTHR) spread-Doppler clutter environment, WAS is shown to avoid MV signal cancellation at high SNR and poor BSS threshold performance at low SNR.
AB - Space-time adaptive processing (STAP) in complex radar propagation and inhomogeneous clutter environments is often precluded because neither the target wavefront is sufficiently known nor is signal-free training data available. In recent work, wavefront adaptive sensing (WAS) was proposed to overcome these challenges by combining minimum variance (MV) adaptive processing and blind source separation (BSS) for distributed sources. In this paper, WAS is compared with conventional BSS and MV processing both analytically and via simulation. In an over-the-horizon radar (OTHR) spread-Doppler clutter environment, WAS is shown to avoid MV signal cancellation at high SNR and poor BSS threshold performance at low SNR.
KW - Adaptive signal processing
KW - Array signal processing
KW - HF radar
KW - Ionospheric electromagnetic propagation
KW - Radar clutter
UR - http://www.scopus.com/inward/record.url?scp=51449110308&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2008.4518178
DO - 10.1109/ICASSP.2008.4518178
M3 - Conference contribution
AN - SCOPUS:51449110308
SN - 1424414849
SN - 9781424414840
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 2589
EP - 2592
BT - 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
T2 - 2008 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP
Y2 - 31 March 2008 through 4 April 2008
ER -