| Crop | Sensor height (m) | Sensor diameter (μm) | Sampling frequency (Hz) | Calibration factor
| Reference (year) |
| Bare soil | — | 12.7, 25.4, 76.2 | 8 | 0.90, 1.04, 1.88 | 1998 [46] | Open water | 1.0, 1.3, 1.9, 2.6 | 75 | 10 | 0.2, 0.25 | 2010 [47] | Irrigated pasture (tall fescue) | 0.75 (0.6) | 75 | 4 | 0.35 (0.4) | 2008 [48] | Sugarcane | 0.2, 0.5, 0.75, 1.5 | 75 | 10 | 0.55 to 0.66 | 2010 [49] | Flood-irrigation pecan | , 0 | — | 4 | 1.1 , 0.5 | 2007 [6] | Bare soil | 0.5, 1.0, 1.5, 2.0 | 13 | 10 | 0.38, 0.39, 0.42, 0.46 | 2012 [50] | Rice | 0.3, 0.6, 0.7, 0.8, 0.9, 1.0, 1.4, 1.45, 1.55, 1.7 | 76 | 10 | 1.0 | 2013 [51] | Lagoon | 0.9, 1.1, 1.4 | 76 | 8 | 1.0 | 2002 [52] | Grapevine | 2.0, 2.3, 2.6, 2.9 | 76 | 8 | 0.88, 0.81, 0.76, 0.66 | 2000 [53] | Sorghum | 0.7, 1.0, 1.3 | 76 | 8 | 1.0 | 1997 [54] | Wheat | 0.7, 1.0, 1.3 | 76 | 8 | 0.5 | 1997 [54] | Grass | 0.3, 0.6, 0.9, 1.2 | 76 | 8 | — | 2014 [55] | Vineyard | 0.5, 1, 1.5 | 76 | 10 | 0.67–0.93 | 2015 [56] | Tomato | 0.5, 1.0, 1.5, 2.0, 2.5 | 75.2 | 10 | 1.82 | 2015 [57] | Grass | 1, 1.43, 1.86 | 76 | 10 | 0.66 | 1997 [58] |
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