Risk Levels for Rule-Based Weather Decision Aids
ARMY RESEARCH LAB WHITE SANDS MISSILE RANGE NM BATTLEFIELD ENVIRONMENT DIV
Pagination or Media Count:
Rules-based weather effects decision aids, such as the Tri-Service Integrated Weather Effects Decision Aid T-IWEDA, is a stop-light type of decision aid. The rules that T-IWEDA uses for differentiating the stop-light boundaries do not sufficiently represent real-world conditions. Within each T-IWEDA band redyellowgreen significant variation may occur. According to Army FM-34-81-1, Battlefield Weather Effects, moderate impacts yellow regions cover from 25 to 75 reduced normal effectiveness. Within such a large region it is unrealistic to believe that there is not a further gradation of impacts, i.e. a slow transition from red to green, rather than three abrupt, unvarying regions. To mitigate this problem a series of weather specific curves, that transition from red to yellow to green in a continuous manner, have been developed using measured and modeled resources. Parametric curves have been developed for IR sensors, helicopters, and personnel working under varied weather conditions. For a given or forecast weather condition, these curves can be used to represent the level of risk for select systems, sub-systems or components. The technique and curves are applicable for TIWEDA and may also be used as a penalty within combat models.
- Administration and Management