State of the Art and Future Perspectives of Atmospheric Chemical Sensing Using Unmanned Aerial Vehicles: A Bibliometric Analysis

Abstract

In recent years, unmanned aerial vehicles (UAVs) have been increasingly used to monitor and assess air quality. The interest in the application of UAVs in monitoring air pollutants and greenhouse gases is evidenced by the recent emergence of sensors with the most diverse specifications designed for UAVs or even UAVs designed with integrated sensors. The objective of this study was to conduct a comprehensive review based on bibliometrics to identify dynamics and possible trends in scientific production on UAV-based sensors to monitor air quality. A bibliometric analysis was carried out in the VOSViewer software (version 1.6.17) from the Scopus and Web of Science reference databases in the period between 2012 and 2022. The main countries, journals, scientific organizations, researchers and co-citation networks with greater relevance for the study area were highlighted. The literature, in general, has grown rapidly and has attracted enormous attention in the last 5 years, as indicated by the increase in articles after 2017. It was possible to notice the rapid development of sensors, resulting in smaller and lighter devices, with greater sensitivity and capacity for remote work. Overall, this analysis summarizes the evolution of UAV-based sensors and their applications, providing valuable information to researchers and developers of UAV-based sensors to monitor air pollutants.

Drone-Assisted Particulate Matter Measurement in Air Monitoring: A Patent Review

“…A comprehensive patent review has been achieved after extracting specific data from 13 patents. This work's results supply additional information not included in previous reviews in this field such as [25,51] where the scientific literature is reviewed. This patent review, together with previous scientific literature reviews, supplies a wider overview on drone-assisted particulate matter monitoring by complementing the review of scientific literature with patent literature.…”

“…of Autonomous Hexacopter UAVs for ity Air Quality Management [43] PM2.5 2023 onitoring and forecasting using smart rrent neural network for sustainable deopment in Chennai city [44] Liquid petroleum gas, propane, CH4, H2, PM2. Review articles concerning drone-assisted air quality monitoring such as [25,51] have been published. However, available reviews focus on scientific literature and may lack technical solutions found in the patent literature.…”

“…Although analyzing scientific literature regarding drone-assisted air pollution monitoring is not the scope of this work, some examples of scientific journal publications on this field are presented in Table 2. Review articles concerning drone-assisted air quality monitoring such as [25,51] have been published. However, available reviews focus on scientific literature and may lack technical solutions found in the patent literature.…”

GPU-Based Parallel Processing Techniques for Enhanced Brain Magnetic Resonance Imaging Analysis: A Review of Recent Advances

“…Even though this review concentrates on some of the most well-known examples from the existing literature, research papers on brain MRI and GPU-based parallel processing are relatively rare in the last five years. The VOSviewer software (version 1.6.20) [38][39][40][41] is used to create bibliographic connection between word clouds on GPU-based parallel processing for brain MRIs, as seen in Figure 2. Therefore, in Figure 2, there are a total of seven different clusters with different colors and 122 keywords shown for the timeline between 2019 and 2023.…”

“…The VOSviewer software (version 1.6.20) [ 38 , 39 , 40 , 41 ] is used to create bibliographic connection between word clouds on GPU-based parallel processing for brain MRIs, as seen in Figure 2 . Therefore, in Figure 2 , there are a total of seven different clusters with different colors and 122 keywords shown for the timeline between 2019 and 2023.…”