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Title: Automated detection of austere entry landing zones : a “GRAIL Tools” validation assessment
Authors: Sinclair, Samantha N.
Shoop, Sally A. (Sally Annette)
Keywords: Airborne operations (Military science)
Airmobile operations (Military science)
Austere entry
Computer programs
Geographic information systems
Landing zone
Remote sensing
Publisher: Engineer Research and Development Center (U.S.)
Series/Report no.: Miscellaneous Paper (Engineer Research and Development Center (U.S.)) ; no. ERDC/CRREL MP-22-13
Is Version Of: Sinclair, 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.
Abstract: The 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.
Description: Miscellaneous Paper
Gov't Doc #: ERDC/CRREL MP-22-13
Rights: Approved for Public Release; Distribution is Unlimited
Size: 20 pages / 3.9 MB
Types of Materials: PDF/A
Appears in Collections:Miscellaneous Paper

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