Weak transient signal detection in non-Gaussian noise using RBF and recurrent networks

LiKang Yen; Jose C. Principe

doi:10.1117/12.319452

26 August 1998 Weak transient signal detection in non-Gaussian noise using RBF and recurrent networks

LiKang Yen, Jose C. Principe

Proceedings Volume 3395, Radar Sensor Technology III; (1998) https://doi.org/10.1117/12.319452
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

In most of the developed transient signal detection algorithms, the background noise is usually assumed to be Gaussianly distributed to simplify the derivation of generalized likelihood ratio test (GLRT). However, in many real-world applications like target detection in ultra wideband SAR images, the distribution of dominant interference usually have long tails, and can not be characterized simply by Gaussian distribution. The performance of the linear GLRT detector, which is optimal under the Gaussian background noise assumption, would be badly degraded.In this paper, we take locally optimum approach to develop weak transient signal detection utilizing Laguerre recurrent networks for subspace projection, as well as radial basis function networks for tracking non-Gaussian noise statistics. Experiments show that the proposed weak transient signal detectors perform better than GLRT in the impulsive background noise environment.

Citation Download Citation

LiKang Yen and Jose C. Principe "Weak transient signal detection in non-Gaussian noise using RBF and recurrent networks", Proc. SPIE 3395, Radar Sensor Technology III, (26 August 1998); https://doi.org/10.1117/12.319452

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