Array Processing is a signal processing technique that leverages arrays of sensors—such as microphones, antennas, or optical detectors—to spatially resolve and interpret signals. Applications of array processing include source localization, beamforming, and enhanced environmental monitoring. NECLA applies these methods to optical fiber sensing, distributed acoustic monitoring, and media analytics, enabling greater accuracy in detecting subtle patterns across vast sensor networks and complex environments.
We present adaptive beamforming techniques to forward-transmission multi-event vibration sensing in environments with interference and jamming. Experimental validation over 100km fiber demonstrates significant improvements on signal reconstruction, noise reduction, and interference rejection from other locations.
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NEC Laboratories America, Inc. (NEC Labs) is the US-based center for NEC Corporation’s global network of corporate research laboratories. Our diverse research groups collaborate with industry, academia and governments to provide disruptive solutions to complex problems. A leader in the integration of IT and network technologies with more than 100 years of expertise, NEC provides a combination of products and solutions that cross-utilize the company’s experience and global resources to meet the complex and ever-changing needs of its customers.