IMEKO International Conference on Metrology for Archaeology and Cultural Heritage Florence, Italy, December 4-6, 2019 The Basilica of Santa Caterina d’Alessandria in Galatina (Lecce, Italy): NDT surveys for the conservation project Leucci1 G., De Giorgi1 L., De Pascalis G.2, Scardozzi1 G. 1 Istituto per i Beni Archeologici e Monumentali – CNR,
[email protected] 2 Universitá La sapienza Roma,
[email protected] Abstract – its walls to both ascertain the extent and location of the The basilica was built between 1369 and 1391, by oldest structures related to the Basilica and to study the order of Raimondello Orsini del Balzo. The building, conservation state of the walls. on Raimondello's death in 1405, will be completed by his wife, Princess Maria d'Enghien, and then by his II. RESULTS AND DISCUSSION son, Giovanni Antonio Orsini Del Balzo. The GPR surveys were carried out with the IDS Hi-Mod A study, using non-destructive techniques (NDT) was system using both the dual-band 600 MHz - 200 MHz undertaken inside and on the façade of the Basilica to and 900MHz antennae. investigate the oldest structure of the church and to On the walls the data were acquired in continuous mode help in restoration work. The NDT analysis showed along 0.05m spaced survey lines, using 512 samples per interesting results. trace, 60 ns time range for 900MHz antenna, manual time-varying gain function. In this paper, the results of area A were shown (Fig. 1). The data were subsequently processed using standard I. INTRODUCTION two-dimensional processing techniques by means of the Non-destructive techniques (NDT) includes Ground- GPR-Slice Version 7.0 software [6].