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Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/45265
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dc.contributor.authorSinclair, Samantha N.-
dc.contributor.authorShoop, Sally A. (Sally Annette)-
dc.creatorCold Regions Research and Engineering Laboratory (U.S.)-
dc.date.accessioned2022-08-30T18:38:25Z-
dc.date.available2022-08-30T18:38:25Z-
dc.date.issued2022-08-
dc.identifier.govdocERDC/CRREL MP-22-13-
dc.identifier.urihttps://hdl.handle.net/11681/45265-
dc.identifier.urihttp://dx.doi.org/10.21079/11681/45265-
dc.descriptionMiscellaneous Paperen_US
dc.description.abstractThe Geospatial Remote Assessment for Ingress Locations (GRAIL) Tools software is a geospatial product developed to locate austere entry landing zones (LZs) for military aircraft. Using spatial datasets like land classification and slope, along with predefined LZ geometry specifications, GRAIL Tools generates binary suitability filters that distinguish between suitable and unsuitable terrain. GRAIL Tools combines input suitability filters, searches for LZs at user‐defined orientations, and plots results. To refine GRAIL Tools, we: (a) verified software output; (b) conducted validation assessments using five unpaved LZ sites; and (c) assessed input dataset resolution on outcomes using 30 and 1‐m datasets. The software was verified and validated in California and the Baltics, and all five LZs were correctly identified in either the 30 or the 1‐m data. The 30‐m data provided numerous LZs for consideration, while the 1‐m data highlighted hazardous conditions undetected in the 30‐m data. Digital elevation model grid size affected results, as 1‐m data produced overestimated slope values. Resampling the data to 5 m resulted in more realistic slopes. Results indicate GRAIL Tools is an asset the military can use to rapidly assess terrain conditions.en_US
dc.description.sponsorshipUnited States. Office of the Assistant Secretary of the Army for Acquisition, Logistics, and Technology.en_US
dc.format.extent20 pages / 3.9 MB-
dc.format.mediumPDF/A-
dc.language.isoen_USen_US
dc.publisherEngineer Research and Development Center (U.S.)en_US
dc.relation.ispartofseriesMiscellaneous Paper (Engineer Research and Development Center (U.S.)) ; no. ERDC/CRREL MP-22-13-
dc.relation.isversionofSinclair, Samantha N., and Sally A. Shoop. "Automated detection of austere entry landing zones: A “GRAIL Tools” validation assessment." Transactions in GIS 23, no. 6 (2019): 1317-1331. https://doi.org/10.1111/tgis.12584-
dc.rightsApproved for Public Release; Distribution is Unlimited-
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobat-
dc.subjectAirborne operations (Military science)en_US
dc.subjectAirmobile operations (Military science)en_US
dc.subjectAustere entryen_US
dc.subjectComputer programsen_US
dc.subjectGeographic information systemsen_US
dc.subjectLanding zoneen_US
dc.subjectManeuveren_US
dc.subjectRemote sensingen_US
dc.subjectTerrainen_US
dc.subjectTrafficabilityen_US
dc.titleAutomated detection of austere entry landing zones : a “GRAIL Tools” validation assessmenten_US
dc.typeReporten_US
Appears in Collections:Miscellaneous Paper

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