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An analysis of the Italian ro-ro and ro-pax network in the years 2008-2015

Lupi M., Farina A., Pratelli A., Bellucci L.

Transport Problems

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2017

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T. 12, z. spec.

127--140

EN

In this paper, the development of Motorways of the Sea (MoS) services offered at Italian ports from 2008 to 2015 is analyzed. In particular, a detailed research on MoS routes calling at Italian ports in the year 2015 is carried out; within MoS routes: ropax and only cargo ro-ro services are identified. MoS routes in the year 2015 are compared with those in the years 2008, 2010 and 2012. The study highlights two main aspects. First, the great majority of MoS routes in Italy are ro-pax ones: ro-ro routes are only 31% of the total, but ro-pax service frequencies are highly variable during the year, from high to low season. Second, due to the economic crisis, carriers are trying to operate services with high load factors and trying to find new markets: in fact, from 2008 to 2015, route frequencies have decreased, whereas the number of port calls in each route has increased. Finally, the capability of ro-ro and ro-pax routes of being competitive versus all-road transport has been analyzed. The analysis has shown that both ro-ro and ro-pax routes show relevant problems in terms of their competitiveness against all-road transport. Ro-pax routes are not reliable and ro-ro routes are not fast and frequent; thus, they both do not fulfill essential requirements for MoS services.

2

Surveillance Unattended Foliage Penetrating Radar for Border Control and Homeland Protection

Amato F., Farina A., Fiorini M., Gallone S.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2013

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Vol. 7, no. 2

193--196

EN

The increasing request for safety, security and environment protection at local and national level reveal the deficiency of the traditional surveillance and control centers to satisfy the needs and requirements of modern border control systems for homeland protection where land border is expected to be monitored as well as the maritime one. This is, for instance, the case of any land border affected by hidden immigration and/or illegal traffics as well as any small areas such as critical infrastructures or military/ civilian posts in forest or jungle environment characterized by vegetation. In such challenging environment, logistics constraints strongly recommend to have very low power devices able to operate months or years without maintenance. A such scenario should be the perfect place for implementing an Unattended Ground Sensors (UGS) network making use FOliage PENetration (FOPEN) radar for border control. The paper aims to present the basic characteristics and preliminary results of a Surveillance Unattended FOPEN (SUF) radar suitable for detecting moving targets, people or vehicles, in dense forest environment.

3

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

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2011

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Vol. 57, No. 4

451-457

EN

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.

4

Design of Pareto-Optimal Radar Receive Filters

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

International Journal of Electronics and Telecommunications

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2011

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Vol. 57, No. 4

477-481

EN

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).