Adaptive Beamforming is a signal processing technique that steers sensor or antenna arrays toward desired signals while minimizing interference. NEC Labs America applies Adaptive Beamforming in distributed acoustic sensing, radar, and optical fiber arrays. The method improves sensitivity and accuracy by dynamically adjusting in real time, making it useful for infrastructure monitoring, seismic detection, and communications in noisy 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.