ABTRACT The objective of this thesis is to obtain the scattering properties of a distribution of non-spherical particles, the main goal being the application to astronomical observations of cometary dust at visible wavelengths. This work also presents a qualitatively explanation of the laboratory scattering measurements of mineral particles of composition analogous to cometary dust. A systematic study of the scattering properties of a size distribution of particles for both regular and irregular shapes has been conducted, in order to explain the scattering properties of a size and shape distribution. Two different particle compositions have been considered, namely a mixture of dirty ice and silicate with carbon inclusions and a mixture of silicate and carbon. There is a certain consensus in the astrophysics community, to establish that the cometary grain has a porous structure, forming aggregates of a certain number of monomers. However, laboratory experiments have shown that the compact mineral particles with analogous composition to cometary dust exhibit similar properties. For this reason, we have selected these physical parameters, the irregularity and the degree of porosity, as essential in this study. The results have allowed us to reach certain conclusions related to cometary taxonomy, the interpretation of some elements of the scattering matrix and the tendencies that these elements show after modifying the input physical parameters. It has been possible to reproduce the scattering measurements by using both compact and porous particles, so that none of those particles internal structures should be favoured.