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| 8 | NIST taps AI for better radar detection in 3.5 GHz band (簡訳:NISTは3.5 GHz帯域でより良いレーダー検出のためにAIをタップします) | ----------- | |
| FierceWireless: Wireless | 2019-02-22 00:00 | ????0? | |
| FierceWireless is returning to Barcelona, Spain, during Mobile World Congress 2019 with a two-day Executive 5G Panel Series at the Fira Congress Hotel, conveniently located across the street from the MWC Convention Center. The panel events will take place on Feb. 25-26 and will cover 5G and The Fixed Wireless Access Opportunity, Taking 5G Indoors, and Making 5G Ubiquitous. Attendees will have the opportunity to network and hear from 5G leaders including Verizon, Vodafone, Orange, Sprint, NTT Docomo, Boingo Wireless, Qualcomm, and more over the course of two days.Currently, there are no official standards for determining when the military is actually using the band. Radar signals from ships at sea are detected using automated detectors that look for energy rises in the electromagnetic spectrum, but these detectors are not discriminating enough to consistently get it right, sometimes confusing other RF signals as radar or missing the radar signatures altogether, according to NIST researcher Michael Souryal, who is one of the authors of the new paper.So Souryal and his colleagues turned to AI for a potential solution. Eight deep learning algorithms—software systems that learn from pre-existing data—were trained to recognize offshore radar signals from a collection of nearly 15,000 60-second-long spectrograms. These spectrograms were recorded in 2016 near naval bases in San Diego, California, and Virginia Beach, Virginia, for NIST’s National Advanced Spectrum and Communications Test Network, according to NIST. After training, the deep learning algorithms were pitted against energy detectors to see which performed best at identifying and classifying a set of spectrograms different from the ones used to educate the AI detectors. The researchers found that three of the deep learning algorithms appreciably outperformed the energy detectors. -- ???????? | |||
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