# Remote Sensing for Irrigation of Horticultural Crops
## 3 Sensors and Platforms
### Remote Sensing Platforms
#### 3.2.1 Satellite
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Satellite** & **Resolution** & **Revisit (Days)** & **Instruments** & **Field of Application** \\ \hline Aqua & & & Multichannel Microwave & Precipitation, oceanic water vapor, cloud water, \\  & & & Radiometer (Passive Sensor) & Vegetation and ecosystem dynamics, hazard monitoring, geology and soils, land surface climatology, hydrology, land cover change, and the generation of digital elevation models (DEMs). \\ \hline  & & & two panchromatic cameras that take black-and-white stereoscopic pictures in the visible region of the electromagnetic spectrum & Land and water resources management \\ \hline Cloudsat & 1.7 km & & radar (active sensor) & cloud liquid water and ice water contents \\ \hline  & 0.46 m panchromatic (B& 0.82 m) and 1.84 m multispectral resolution & 2.1 to 8.3 & Simultaneous panchromatic and multispectral (panel-sharpened) & It features the most sophisticated technology ever used in a commercial remote sensing system \\ \hline  & & & Multispectral only & Earth’s water cycle; better agricultural crop forecasting and monitoring of freshwater resources. GPT missions are to observe global precipitation more frequently and more accurately than TRMM (Tropical Rainfall Measuring Mission). \\ \hline  & & & & Earth’s water cycle; better agricultural crop forecasting and monitoring of freshwater resources. GPT missions are to observe global precipitation more frequently and more accurately than TRMM (Tropical Rainfall Measuring Mission). \\ \hline  & & & & Rainfall temperature of natural resources and of natural disasters, tax mapping, agriculture \\ \hline  & & & & It detects spectrally-filtered radiation in VIRS, SWIR, LWIR and panchromatic bands from the sun-lit Earth in a 183 km wide swath when orbiting at an altitude of 705 km. \\ \hline  & & & & It collects images using nine spectral bands in different wavelengths of visible, near-infrared, and shortwave light to observe a 185 km (115 mile) wide swath of the Earth in 15-30 m resolution covering wide areas of the Earth’s landscape while providing sufficient resolution to distinguish features like urban centers, farms, forests and other land uses. \\ \hline  & & & & It provides color products at 50 cm that deliver an extremely high level of detail. High location accuracy and excellent image quality for precision mapping. \\ \hline  & Pan: 65 cm (nadir) to & & & \\ QuickBird & 73 cm (20\({}^{2}\) off-radradir) & 1-3-5 (depending on latitude) & Panchromatic and Multispectral & Useful for analyses of changes in land usage, agricultural and forest climates \\ \hline  & & & & agricultural and forest climates \\ \hline  & & & & \\ Rapideye & 5 m & 1 (off-radir) 5.5 days (at radiir) & Multispectral & It includes the Red-Edge band, which is sensitive to changes in chlorophyll content \\ \hline  & & & & Generic land cover, land use and change detection maps \\ Sentinel-2 & 10 to 60 m & 5 & MSI (Multispectral Imager) & Maps of geophysical variables for leaf area index index, leaf chlorophyll content, leaf water content \\ \hline  & & & & It measures the amount of water in the top 5 cm (2 inches) of soil everywhere on Earth’s surface. Surface features are used to monitor water and energy fluxes, and play a crucial role in understanding changes in water availability \\ \hline  & & & & Sea Surface Salinity over oceans and Soil Moisture over land for climatology, modelized, hydrological, and oceanographic applications. \\ \hline  & & & & SPOT-6 and SPOT-7 are the de facto solution to cover wide areas in record time, making national maps repair updating as well as thematic map creation possible. \\ \hline  & & & & \\ Spot-6 and 7 & 1.5 m & 1 & Multispectral Imagery (4 bands) & SPOT-6 and SPOT-7 are the de facto solution to cover wide areas in record time, making national maps repair updating as well as thematic map creation possible. \\ \hline  & & & & \\ \end{tabular}
\end{table} 
Table 1: Satellites for agricultural purposes.