Which category of reconnaissance is obtained by sensors such as cameras and infrared devices?

The category of reconnaissance obtained by sensors such as cameras and infrared devices is referred to as imagery reconnaissance. This type of reconnaissance utilizes various forms of imaging technology to capture and analyze visual information from the environment. Cameras provide visual imagery, while infrared devices can capture information based on heat signatures, thus giving users the ability to assess conditions and activities that might not be visible through the naked eye.

Imagery reconnaissance is critical for understanding battlefield environments, monitoring movements of personnel or equipment, and gathering intelligence on enemy positions or capabilities. This type of reconnaissance is distinct from visual reconnaissance, which may rely solely on direct observation, and from electronic reconnaissance, which typically involves gathering data from electronic signals. Additionally, human intelligence involves information collected from human sources, which contrasts with the fundamentally technology-based approach of imagery reconnaissance.