Image qualityNavigation systemsUnmanned aerial vehiclesElectronicsInertial navigation systemsObjectivesThe article presents a set of parameters used to compare the quality of synthetic aperture radar terrain images. This quality can be assessed using qualitative and quantitative indicators. Quantitative parameters...
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This panel shows a profile of the terrain at constant azimuth, with the radar flight track into the page. The profile is cut by curves of constant range, spaced by the range resolution of radar, defined as Δρ = c/2ΔfBW, where c is the speed of light and ΔfBW is the range ...
Buried palaeo-polygonal terrain detected underneath Utopia Planitia on Mars by the Zhurong radar Article Open access 23 November 2023 First look by the Yutu-2 rover at the deep subsurface structure at the lunar farside Article Open access 09 July 2020 Layered subsurface in Utopia Basin of ...
Sridevi Jade3 & Malay Mukul2 The Shuttle Radar Topography Mission (SRTM) Digital Terrain Elevation Data (DTED) are used with the consensus view that it has a minimum vertical accuracy of 16 m absolute error at 90% confidence (Root Mean Square Error (RMSE) of 9.73 m) world-wide...
An ortho-image of the slant range distance is used with a Digital Elevation Model to generate images of the local incident angle along the range and azimuth directions. The method compensates for variations in the terrain area of each pixel and for the angular dependence of backscatter, ...
Synthetic Aperture Radar (SAR) is an imaging radar that exploits antenna motion to create a virtual aperture that is larger than the physical antenna. SAR is used onairborneorspacebornesystems to create high-resolution images of terrain or objects on the ground. ...
After image formation, the radar return is resolved into an image in range-azimuth coordinates. This figure shows a profile of the terrain at constant azimuth, with the radar flight track into the page. The profile is cut by curves of constant range, spaced by the range resolution of c= ...
s flight path, using the motion of the antenna to simulate a much larger aperture than the physical size of the antenna. This process is called “synthetic” because it creates an aperture that is larger than the physical size of the antenna, and thus the resolution of the image is higher...
This is thought to be due to issues such as the quality of the terrain data; the accuracy of the datum used; and the absence of radar returns from man-made structures in the simulated maps. GRAD has paused our research into terrain-matching pending the availability of more suitable terrain...