4 Contributo in Atti di Convegno (Proceeding)

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Multiparametric Microwave Sensor for Environmental Measurements

In this paper, we propose the use of multiple passive microwave sensors to monitor several environmental parameters simultaneously. The system can be easily integrated into a chipless RFID system to obtain sensing and identification in a single, simple tag, which is also inexpensive, completely passive, suitable for harsh environments and easy to fabricate. We demonstrate the capability to detect humidity, NO2, ozone and ammonia. The main challenges, related to the selection of suitable sensi...

Learning of Lifted Macro-Events for Heuristic-Search Temporal Planning

Learning domain knowledge from small training problems to improve planning performance on arbitrarily sized problems is a highly active research area. Many works explored the use of macro-actions to create "shortcuts" in the search space, at the cost of increasing the branching factor of the problem. In temporal planning, a recent technique proposes to equip a heuristic-search temporal planner with selected "macro-events": a "shortcut" mechanism similar to macro-actions but with state-depende...

Microwave Sensing of Humidity with a Transparent and Flexible Electromagnetic Metasurface

A planar, low-cost, and flexible microwave sensor is introduced, utilizing an electromagnetic metasurface of frequency-selective surface (FSS) type. This sensor concept relies on altering the inter-plate capacitance of the electric inductive-capacitive (ELC) resonators forming the FSS periodic array grid. When a material with varying electrical characteristics is placed between the plates, changes in capacitance and inductance lead to a shift and attenuation of the resonant frequency that are...

Development of a Passive Skin for Glass Building Surfaces in a Smart Electromagnetic Environment

Electromagnetic metasurfaces (MTS), also referred to as Reconfigurable Intelligent Surfaces (RIS) in their dynamic form, have the potential to actively shape the wireless communication environment, particularly in 5G and 6G systems. They help overcome significant path loss issues, especially at millimeter-wave (mmWave) frequencies within the FR2 band. Our study focuses on MTS from a fabrication standpoint, highlighting the microfabrication methods employed to create a static and passive MTS p...

Intra- and inter-annual analysis of remote sensing time series with multitask learning

Multiannual analysis of remote sensing images for monitoring crop rotation, urbanization, or any other type of land cover transition helps to understand Earth dynamics. Existing methods studying images spanning over more than a year mainly focus only on land cover changes. Other methods perform land cover updates, but following a strategy guided by previous available maps and seeking to obtain a new one. Those methods are effective but may omit intra- and inter-annual interdependencies. In th...

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