TY  - RPRT
TI  - Evaluation of the Simple Safe Site Selection (S4) Hazard Detection Algorithm Using Helicopter Field Test Data
AU  - Luna, Michael E.
AU  - Almeida, Eduardo
AU  - Spiers, Gary
AU  - Villalpando, Carlos Y.
AU  - Johnson, Andrew E.
AU  - Trawny, Nikolas
PY  - 2017
UR  - https://ntrs.nasa.gov/citations/20190026883
ID  - 20190026883
ER  -