Generic and site-specific criteria in the optimization of noise abatement trajectories

This paper presents a trade-off study that has been conducted using a recently developed tool for the analysis and design of noise abatement procedures around airports. This new tool, NOISHHH, combines a noise model, a geographic information system, and a dynamic trajectory optimization algorithm. NOISHHH features a multi-objective optimization capability that permits exploration of a variety of environmental criteria, including indices that are generic in nature (e.g. noise footprints) as well as site-specific criteria that take into account the population distribution in the areas surrounding the airport. Using this capability a noise performance trade-off was conducted by comparing arrival trajectories that are optimized according to a variety of noise abatement criteria, including both generic and site-specific criteria. The main focus is on providing insight into the sensitivities in the multi-objective noise performance trade-off process. The results are used to illustrate the possibility of synthesizing trajectories that provide a sensible compromise solution among the various noise criteria.