Results 11 to 20 of about 402,690 (217)
Estimating Crop Coefficients from Fraction of Ground Cover and Height [PDF]
World Environmental and Water Resources Congress 2009, 2009 The FAO-56 procedure for estimating the crop coefficient K c as a function of fraction of ground cover and crop height has been formalized in this study using a density coefficient K d. The density coefficient is multiplied by a basal K c representing full cover conditions, K
Allen, Richard G., Pereira, L.S.
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Retrieval of agricultural crop height from space: A comparison of SARÂ techniques [PDF]
Remote Sensing of Environment, 2016 This paper deals with the retrieval of agricultural crop height from space by using multipolarization Synthetic Aperture Radar (SAR) images. Coherent and incoherent crop height estimation methods are discussed for the first time with a unique TanDEM-X dataset acquired over rice cultivation areas.
Erten, Esra +3 more
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Online crop height and density estimation in grain fields using LiDAR [PDF]
Biosystems Engineering, 2020 Crop height and density estimation ahead of the combine harvester have been investigated over the last 30 years, but they remain a challenge. LiDAR technology is increasingly being investigated for phenotyping and monitoring of cereals. However, so far, little has been published about the influence of laser mounting position and robust online ...
Jean-Edouard Blanquart +3 more
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Remote Sensing, 2017 Correct estimation of above-ground biomass (AGB) is necessary for accurate crop growth monitoring and yield prediction. We estimated AGB based on images obtained with a snapshot hyperspectral sensor (UHD 185 firefly, Cubert GmbH, Ulm, Baden-Württemberg ...
Jibo Yue +6 more
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Poppy Crop Height and Capsule Volume Estimation from a Single UAS Flight
Remote Sensing, 2017 The objective of this study was to estimate poppy plant height and capsule volume with remote sensing using an Unmanned Aircraft System (UAS). Data were obtained from field measurements and UAS flights over two poppy crops at Cambridge and Cressy in ...
Faheem Iqbal +3 more
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Remote Sensing, 2021 This study presents a demonstration of the applicability of machine learning techniques for the retrieval of crop height in corn fields using space-borne PolSAR (Polarimetric Synthetic Aperture Radar) data. Multi-year RADARSAT-2 C-band data acquired over
Qinghua Xie +8 more
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Biomass and Crop Height Estimation of Different Crops Using UAV-Based Lidar [PDF]
Remote Sensing, 2019 Phenotyping of crops is important due to increasing pressure on food production. Therefore, an accurate estimation of biomass during the growing season can be important to optimize the yield. The potential of data acquisition by UAV-LiDAR to estimate fresh biomass and crop height was investigated for three different crops (potato, sugar beet, and ...
ten Harkel, Jelle +2 more
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IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 This article aims to evaluate the potential of multitemporal and multiorbital remote sensing data acquired both in the microwave and optical domain to derive rapeseed biophysical parameters (crop height, dry mass, fresh mass, and plant water content ...
Aubin Allies +7 more
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Drones, 2023 Height is a key factor in monitoring the growth status and rate of crops. Compared with large-scale satellite remote sensing images and high-cost LiDAR point cloud, the point cloud generated by the Structure from Motion (SfM) algorithm based on UAV ...
Xiaozhe Zhou +8 more
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Agronomy, 2023 Buckwheat plant height is an important indicator for producers. Due to the decline in agricultural labor, the automatic and real-time acquisition of crop growth information will become a prominent issue for farms in the future.
Jianlong Zhang +5 more
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