Sensor arrays refer to a grouping of multiple sensors that work together to detect and measure various physical properties or phenomena. These arrays can be used in a wide range of applications, including environmental monitoring, industrial processes, medical diagnostics, and security systems. By combining the data from multiple sensors, sensor arrays can provide more accurate and detailed information about the environment being monitored. Researchers in this area focus on developing new sensor technologies, optimizing sensor placement and configurations, and improving data analysis techniques to extract meaningful information from sensor array data.