ERROR PROPAGATION ANALYSIS OF XPS 31-133 AND CRTN TO HELP DEVELOP A NOISE MAPPING DATA STANDARD

SUMMARY In support of the WG-AEN, DEFRA have recently commissioned a research project to study the accuracy implications of using the WG-AEN Good Practice Guide Toolkits. This research included carried out a series of error propagation and sensitivity tests on the XPS 31-133 and CRTN methodologies using two forms of analysis. A series of Monte Carlo simulations were used to investigate error propagation in the non-geometric aspects of the methods, alongside spatial noise model based sensitivity tests for the geometric aspects. This paper sets out a description of the two testing procedures undertaken, and presents some of the results of the produced. The paper will focus on how the results of this research can be used in practice to help develop a quality audit of available datasets for noise mapping purposes, and to help inform development of specifications for future data capture exercises.