we’re able to leverage commonality with battlefield superstars like the Q-53 radar, which has maintained >95% operability during its entire career. Lockheed Martin just delivered our 189th Q-53 system and counting. It is still fielded with the highest confidence for the U.S. Army today. ...
Forest aboveground biomass (AGB) plays an important role in the study of the carbon cycle and climate change in the global terrestrial ecosystem. AGB estimation based on remote sensing is an effective method for regional scale. In this study, Landsat 8 O
Sentinel-1 uses a type of radar that accidentally reveals the presence of other, similar radars—including those from militaries—in the areas it scans. A European satellite designed to collect Earth sciences data and distribute it freely to people around the world has the unintended ...
has significantly boosted the attention and utilization of SAR data for SM monitoring (Balenzano et al., 2021). Nevertheless, the propagation of microwave signals through the SVAT system is inherently intricate owing to the dynamic and spatially heterogeneous of soil and vegetations (Das ...
In this context, the Sentinel 1 constellation has a C-band synthetic aperture radar (SAR) system, based on the systems already constructed in ERS-1 (European Remote Sensing-1), ERS-2 (European Remote Sensing-2), Envisat, and Radarsat. This constellation has a high spatial resolution and ...
A weighed average of the combination of these indicators is what we call the radar harvest detection index and is given by Equation (A3). 𝑅𝐻𝐷𝐼𝑖=⎧⎩⎨ 𝑌𝑖1+𝐻1·𝐶𝑅𝑠𝑜(𝑡𝑖)1if𝑌𝑖>𝐻2if𝑌𝑖≤𝐻2𝑌𝑖=𝐾9𝑃∑𝑥=18(𝐹𝑥∗...
As input data, we used: (1) airborne hyperspectral HySpex, thermal images, and LiDAR point cloud data; (2) multitemporal Sentinel-2, PlanetScope images, and Shuttle Radar Topography Mission (SRTM) satellite data; and (3) field-verified patterns of dominant tree species as reference data. ...
Most studies using radar data focus on backscattering coefficients (VV, VH, and the VV/VH ratio), which offer valuable information for crop classification [15,16,17]. However, few studies have explored the use of radar polarimetric parameters. This is largely due to the fact that Sentinel-1...
Zero tillage is an important pathway to sustainable intensification and low-emission agriculture. However, quantifying the extent of zero tillage adoption at the field scale has been challenging, especially in smallholder systems where field sizes are sm
used radar data collected from ERS-1 satellite to detect and quantify land subsidence caused by aquifer system compaction in the Antelope Valley, Mojave Desert, California [15]. Hoffmann et al. used ERS-2 satellite data to monitor land subsidence in the Antelope Valley and compared these data ...