|Thesis abstract: |
In the last decade, ground radar sensors, which are used for civilian applications, received an important technological evolution. Tools ground RADAR for monitoring and control are now an established reality in some areas such as open pit mining, and monitoring of medium-scale geological phenomena such as landslides and subsidence.
However, the technology is still young and ground RADAR systems present several interesting research areas. One of the most interesting one, is certainly the analysis of advanced solutions for the antenna synthesis, in order to make imaging techniques RADAR increasingly efficient and reliable
The purpose of this activity is to define one or more solutions for the antenna synthesis of a radar system with particular attention to structural monitoring applications. The work will be based on all radar imaging techniques currently implemented in ground sensors that include:
1) synthesis of antenna through the movement of the sensor along a linear slide
2) Scan through real-rotating antenna aperture
3) synthesis of antenna through radiating elements array (EASA techniques)
In general, the three main solutions outlined can be hybridized in order to provide trade-offs that can respond to different application requirements.
The work will provide a detailed benchmark of existing techniques highlighting the advantages and disadvantages of each application in the main bands of ground radar sensors (ku, X), and in the particular case of monitoring applications infrastructure, with particular attention to technological constraints and technical feasibility of the solution.
At the end of the study of the solutions the innovative approach will be defined and implemented in a prototype of one of the sensors RADAR currently available for these experiments in ARESYS