Improving AEDT Noise Modeling of Mixed Ground Surfaces (2017) / Chapter Skim
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From page 112... ...
9-1 CHAPTER 9. APPENDICES APPENDIX A: Annotated Bibliography APPENDIX B: Logan Study Data File Formats APPENDIX C: Gatwick Study Data File Formats APPENDIX D: Heathrow ANOMS Data File Format APPENDIX E: Washington National Airport Studies Data File Formats APPENDIX F: Detailed Documentation of Model Improvements APPENDIX G: AEDT User Guide Supplement
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A-1 APPENDIX A: ANNOTATED BIBLIOGRAPHY The papers and reports reviewed here cover the theories that will be addressed in this work and the data that will be used for validation in the following work on this project. Groups of papers that address the same theory will be annotated together.
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A-2 This paper describes the utility of a graphic user interface that exercises the Helm 3D code developed by T
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A-3 Lam, Y., and Monazzam, M., On the Modeling of Sound Propagation Over Multi-Impedance Discontinuities Using a Semiempirical Diffraction Formulation, J Acoust.
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A-4 formulations all involve a version of Fresnel integrals in the solutions with a numerical distance defined in slightly different ways. This report is an excellent summary of the methods used by many authors to solve the same problem and shows the relationships between the different formulations.
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B-1 APPENDIX B: LOGAN STUDY DATA FILE FORMATS B.1. Position Data Format One example of a position data file format for the Logan study is included in Table 10.
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B-2 B.2. Noise Data Format One example of a noise data file format for the Logan study is included below.
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B-3 TABLE 12 Meteorological Data Format from Logan Study for a Portion of an Example Event Column in Data File 1 2 3 4 5 … 12 13 … 18 19 20 21 22 Event ID Vector Mean Wind Speed (m/s) Mean Wind Direction (deg)
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C-1 APPENDIX C: GATWICK STUDY DATA FILE FORMATS C.1. Noise and Position Data Format One example of a noise and position data file format for the Gatwick study is included in Table 13.
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D-1 APPENDIX D: HEATHROW ANOMS DATA FILE FORMAT The data from the ANOMS query at Heathrow (LHR) contains the information shown in Table 15.
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D-2 TABLE 15 Single Operation from Database Query of ANOMS at LHR P C A O p e r a t i o n N u m b e r D a t e T i m e O p e r a t i o n T y p e ( A / D / O / T )
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E-1 APPENDIX E: WASHINGTON NATIONAL AIRPORT STUDIES DATA FILE FORMATS E.1. Part 150 Study Measurements The measurements completed during the Part 150 study at DCA utilized Larson Davis Model 820 (LD820)
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E-2 Radar tracking data is part of the data archive. The radar tracks have been reduced to the RAT (RAdar Tracking)
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E-3 TABLE 17 Keywords and Data Description of RAT File Format Keyword Data Count Data element Type Description OGEO 6 longdeg I4 Coordinate origin longitude degrees longmin I4 ..... minutes seclong R4 .....
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that if the NCOUNT T block sho time must night peri times on t D the RAT Data bloc origin. T latitude ar normally NOISEMA rotation re then ROT T used to co Note that T E.2.
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E-5 reading. As noted above, SLMs were deployed on both sides of the river adjacent to the threshold of Runway 01 at DCA.
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FIGURE 71. Example zweek file header.
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FIGURE 72. Example A-weighted time histories at DCA measurement Sites.
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F-1 APPENDIX F: DETAILED DOCUMENTATION OF MODEL IMPROVEMENTS The following appendix describes the recommendations for implementing the findings of this project in the Federal Aviation Administration's (FAA) Aviation Environmental Design Tool (AEDT)
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T be used b receiver. T zone as w average fl boundarie U representi terrain fil ground ty imagery.
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F-3 is vector based, the boundary definitions of bodies of water, for example, will be more accurate than the 100 ft x 100 ft resolution found in the NLCD. If there are only two flow resistivity values in a data set, then the area each occupies in the ellipse or the length of each along the active portion of the ground path, should be recorded when interrogating the terrain data.
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F-4 The straight ray method can be used to calculate the excess ground attenuation in decibels for a point source of one-third octave band noise using the EGA model (Stusnick, et al., 1985)
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F-5 study, once the soft ground effects have been applied. ΔLLA, MIXED-SOFT is added to the current AEDT lateral attenuation adjustment (LLA)
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APPEND T ground su of AEDT used in co T Environm "Improvin into four detailed t recommen Survey M Incorpora T and the A as a refere the AEDT G.1. AED In ambient f Guide.
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T and inclu resistivity values ra represente these non FIGURE 75. he NLCD is a des 16 land c value recom nging from d in this tab -standard valu Recommen Landsat-bas over classifi mendations f 10 to 100,0 le may be m es.
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G-3 TABLE 18. NLCD Land Cover Classifications and the Equivalent Estimated Flow Resistivity Value Recommendations for use in AEDT NLCD2011 Land Cover Classifications Estimated Flow Resistivity (kPa s/m2)
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T and the ad ground co FIGURE 76 he following dition of a n ver on noise FIGURE 7 . Recomme text is a reco ew sub-sectio propagation ( 7.
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F G.3. Mod It existing im SAE-AIR assumes computati taken wh ground.
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