Title :
A robust signal-copy beamformer using H/sup /spl infin// estimation
Author :
Ratnarajah, T. ; Manikas, A.
Author_Institution :
Dept. of Electr. & Electron. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK
Abstract :
In this paper a novel robust signal of interest (SOI) estimation technique is proposed which mitigates the simultaneous degrading effects of finite sampling and imprecise modelling of the antenna array and spatial noise statistics. The new technique is based on the H/sup /spl infin// estimation theory and thus it is robust to model uncertainties. The new H/sup /spl infin// aposteriori estimator for SOI is based on a general state space model for the array signals and it is supported by a number of simulation results which demonstrate its robustness to calibration errors even when the SOI is fully correlated with other incident signals.
Keywords :
antenna arrays; array signal processing; cochannel interference; estimation theory; minimax techniques; noise; signal sampling; state-space methods; H/sup /spl infin// estimation; SOI estimation technique; antenna array; array signals; calibration errors; co-channel interference; finite sampling; general state space model; imprecise modelling; minimax estimation; model uncertainties; robust signal-copy beamformer; simulation; spatial noise statistics; Antenna arrays; Calibration; Degradation; Estimation theory; Noise robustness; Sampling methods; State estimation; State-space methods; Statistics; Uncertainty;
Conference_Titel :
Signals, Systems and Computers, 1996. Conference Record of the Thirtieth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-8186-7646-9
DOI :
10.1109/ACSSC.1996.601080
