Radial basis function interpolations are the most commonly used technique for estimating the unknown values in survey areas. Interpolation methodology has a crucial task to fill the gaps in insufficient areas that result from filtered areas or sensors that do not generate spatial information. Point cloud-based analysis was performed by generating multi-temporal digital elevation models to detect landslide displacement. The generation of image-based point clouds is achievable with various matching algorithms from computer vision systems. Unmanned aerial vehicles have been widely used in landslide detection studies. This paper investigates landslide detection over flat and steep-slope areas with large forest cover using different radial basis function interpolation methods, which can affect the quality of a digital elevation model. These findings gave insight about the performance of the SL2P estimates over the considered heterogenous environments, and suggest the need for extensive validation and re-calibration of the system using long-term field measurements. The SL2P estimates in the two study sites had low accuracy with relative root mean squared error’s in the range 61.63% to 85.26% and possible systematic underestimations with pBias's ranging from 32.17% to 63.16%.
The performance of the SL2P estimates in Marakele and Golden Gate Highlands National Parks were comparatively poor and linearly biased coupled with moderate-to-high errors. This study validated the SL2P estimates of leaf area index (LAI), fractional vegetation cover (FVC) and canopy chlorophyll content (CCC) over the savanna and grassland environments using field measurements. Rugged, shock resistant, waterproof, buoyant enclosure, with lead free components.ġ x Carlson Mini with SurvCE 2.The Sentinel-2 Level 2 Prototype Processor (SL2P) allows the generation of biophysical estimates at high spatiotemporal resolution from Sentinel-2 imagery and could be a solution for generating products in natural environments. GNSS, Internal UHF Radios ( 461-465 MHz ) Base and Rover,72 Channel, full code and carrier tracking of GPS: 14-L1, 14-L2 channels, 6-L5 GPS, Glonass: 12-L1, 12-L2 channels, SBAS: 2, L-band: 1.ĬOM 1 and COM 2 bidirectional communication ports. Sokkia GPS GSR2700ISX RTK Glonass base and rover with Carlson Mini field controller
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