Impulsive Noise Suppression via Adaptive Filtering
Abstract
Wide area surveillance is a common task for many of the nation's defense agencies. Coverage needs to be persistent 24 hours a day and through varying interference environments. High Frequency Over-the-Horizon Radar (HF-OTHR) is capable of providing wide area coverage that is on the order of hundreds of thousands of square kilometers. The challenges of using OTHR are manifold. Operating in an often crowded and noisy frequency spectrum (3 - 30 MHz) coupled with the complex and ever-changing state of the ionosphere presents difficulties higherfrequency radars do not face. In this article we describe a technique for suppressing impulsive noise-like disturbances that often corrupt OTHR data. This new technique is enabled by recent advances in high-speed computing that allow near-real-time implementation of sophisticated adaptive signal processing algorithms.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2009
- Accession Number
- ADA521836
Entities
People
- G. S. San Antonio
Organizations
- United States Naval Research Laboratory