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Spectrum sensing is a fundamental component of cognitive radio (CR). How to promptly sense the presence of primary users (PUs) is a key issue to a CR network. The time requirement is critical in that violating it will cause harmful interference to the PU, leading to a system-wide failure. The motivation of this paper is to provide an effective spectrum sensing method to detect PUs as soon as possible...
In this paper we introduce a novel non-parametric depth-based method for the target detection problem in noisy environments under nominal signal-to-noise ratios. Specifically, a distributed sensor network comprised of multiple transceivers is considered. Each sensor is able to transmit and receive a single tone; which is passed to a super sensor where the data is formed into a multistatic response...
The detection of small targets against a background of clutter and interference has long been a challenge to the designer of radar systems. Whilst much progress has been made, there is still a strong motivation to improve performance even further. Specifically here, the detection of targets that are both weak and extended where the signal-to-noise ratios (SNR) is negative is considered. This work...
Digital Radar Transceivers providing precise digital control over waveform amplitude, frequency and phase is critical for modern Phased Array Radar systems. A Plug-and-Play (PNP) Transceiver was developed to support the Air Force's objective to develop a Hybrid Multiple Input Multiple Output (MIMO) Phased Array Radar (HMPAR) system, where the full array is partitioned into multiple sub-arrays which...
In classical radar, frequency diversity offers one method of obtaining additional information about targets. With the most basic form of frequency diversity, namely increased bandwidth, high range resolution is afforded to the user. Geometric diversity can also offer the potential for increased resolution, and is the multi-static dual to frequency diversity (increased bandwidth) in classical mono-static...
A new technique for detection and discrimination of stationary or slow-moving over-resolved targets on the ground, based upon a Hotelling T-squared test/generalized inner product (GIP) approach to signal analysis is presented. This robust detector separates radar returns from interference via a coherent process. This GIP-based processing can be applied to single-receiver channel systems, multiple...
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