Although the Federal Aviation Administration has developed and improved its integrated noise model since the 1970s, most of the improvements have focused on the sound level database for large commercial jets. Information from some general aviation airports suggests that the model has overpredicted noise impacts, however, yielding an inaccurate representation of noise contours. The inaccurate noise contours can compromise compatible land use planning and can result in unnecessary and costly noise mitigation measures. Harris Miller Miller & Hanson Inc. has received a $400,000,20-month contract [Airport Cooperative Research Program (ACRP) Project 02-37, FY 2011 ] to assess the predictive accuracy of the integrated noise model for general aviation aircraft, identify the causes of deviations between actual and predicted values, and identify potential improvements to the model.
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机译：尽管美国联邦航空管理局（Federal Aviation Administration）自1970年代以来就开发并改进了其综合噪声模型，但大部分改进都集中在大型商用飞机的声级数据库上。来自一些通用航空机场的信息表明，该模型对噪声的影响预测得过高，但是，噪声等值线的表示不准确。不正确的噪声等高线可能会损害兼容的土地利用规划，并可能导致不必要且昂贵的噪声缓解措施。哈里斯·米勒·米勒·汉森公司（Harris Miller Miller＆Hanson Inc.）已获得$ 400,000,20个月的合同[机场合作研究计划（ACRP）项目02-37，2011财年]，以评估通用飞机综合噪声模型的预测准确性，找出原因确定实际值和预测值之间的偏差，并确定模型的潜在改进。
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