Matrix analysis
Matrix computations (3rd ed.)
Reduced-rank adaptive filtering
IEEE Transactions on Signal Processing
Time-Varying Autoregressive (TVAR) Models for Multiple Radar Observations
IEEE Transactions on Signal Processing
The CFAR adaptive subspace detector is a scale-invariant GLRT
IEEE Transactions on Signal Processing
Order Estimation and Discrimination Between Stationary and Time-Varying (TVAR) Autoregressive Models
IEEE Transactions on Signal Processing
Moving target feature extraction for airborne high-range resolutionphased-array radar
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
Parametric GLRT for Multichannel Adaptive Signal Detection
IEEE Transactions on Signal Processing
Array signal Processing in the known waveform and steering vector case
IEEE Transactions on Signal Processing
Digital Signal Processing
Hi-index | 35.68 |
A parametric generalized likelihood ratio test (GLRT) for multichannel signal detection in spatially and temporally colored disturbance was recently introduced by modeling the disturbance as a multichannel autoregressive (AR) process. The detector, however, involves a highly nonlinear maximum likelihood estimation procedure, which was solved via a two-dimensional iterative search method initialized by a suboptimal estimator. In this paper, we present a simplified GLRT along with a new estimator for the problem. Both the estimator and the GLRT are derived in closed form at considerably lower complexity. With adequate training data, the new GLRT achieves a similar detection performance as the original one. However, for the more interesting case of limited training, the original GLRT may become inferior due to poor initialization. Because of its simpler form, the new GLRT also offers additional insight into the parametric multichannel signal detection problem. The performance of the proposed detector is assessed using both a simulated dataset, which was generated using multichannel AR models, and the KASSPER dataset, a widely used dataset with challenging heterogeneous effects found in real-world environments.