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2 International Journal of Electronics and Telecommunications

2 2011

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Effects of Mutual Coupling of Radiating Antennas on an Adaptive Radar Detector

De Nicola S., De Maio A., Farina A., Fiorini M., Infante L., Piezzo M.

International Journal of Electronics and Telecommunications

2011

Vol. 57, No. 4

451-457

In this paper, we address the adaptive detection/classification of signals in a homogenous interference environment. We refer to a radar system equipped with a phased array antenna and account for both the presence of mutual coupling between radiating antennas and a possible coherent interferer impinging on the array mainbeam. To deal with this scenario, we adopt a two-stage detection/classification scheme, enjoying the Costant False Alarm Rate (CFAR) property, to discriminate between target detection and coherent interferer rejection. Finally, we evaluate the system performance via Monte Carlo simulations. The results show that our system has interesting rejection capabilities and satisfactory detection levels. As a consequence, it could be successfully applied in real scenarios where mutual coupling is present.

Design of Pareto-Optimal Radar Receive Filters

De Maio A., Piezzo M., Iommelli S., Farina A.

International Journal of Electronics and Telecommunications

2011

Vol. 57, No. 4

477-481

This paper deals with the design of radar receive filters jointly optimized with respect to sidelobe energy and sidelobe peaks via Pareto-optimal theory. We prove that this criterion is tantamount to jointly minimizing two quadratic forms, so that the design can be analytically formulated in terms of a multi-objective optimization problem. In order to solve it, we resort to the scalarization technique, which reduces the vectorial problem into a scalar one using a Pareto weight defining the relative importance of the two objective functions. At the analysis stage, we assess the performance of the receive filters in correspondence of different values of the Pareto weight highlighting the performance compromises between the Integrated Sidelobe Level (ISL) and the Peak Sidelobe Level (PSL).