Chapter 6

Remote Sensing in Precision Agriculture

Remote Sensors

Sensors come in various types, including visible light (RGB) sensors, multispectral sensors, hyperspectral sensors, light detection and ranging (LiDAR) sensors, and thermal sensors, each designed to gather specific information. RGB sensors are commonly used to capture visible light images, suitable for general imaging purposes. Multispectral sensors capture light in multiple bands beyond the visible spectrum, typically including near-infrared (NIR). Hyperspectral sensors capture hundreds or even thousands of narrow wavelength bands, providing a more detailed spectral profile. LiDAR measures laser pulses to measure distances and create 3D models of the Earth’s surface. Thermal infrared detects infrared radiation, facilitating tasks such as search and rescue or inspections. Table 6.3 outlines the strengths and weaknesses of commonly used imaging sensors. Understanding these trade-offs is essential for selecting the most suitable imaging sensor based on the specific requirements of the application.

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