In the context of ship monitoring in ocean, targets are usually sparsely distributed. Thus, synthetic aperture radar (SAR) imaging whole scene is quite redundant and costly. However, raw SAR echo data were considered to be useless before focusing. Few studies have attempted detect ships from data. It seems an impossible task since resolution too low. This article proposes a detection method for...

This paper focuses on the feature analysis of moving ships in synthetic aperture radar (SAR) images and proposes a detection algorithm for ships. The algorithm first detects all the candidate ships and provides analysis of structural features with the discrete topology. In the analysis of structural features, aspect ratio and ship’s navigation direction can be used to construct feature confiden...

The results of the ship ballast water treatment systems neutralization need to be verified in a transparent and trustful way before the ship enters a port. Some researches and results, explained in this article, confirm a need for a good verification. If there is no good methodology agreed, then it would not be accepted the solution that the BWMC (Ballast Water Management Convention) 2004 did p...

This paper presents a two-level architecture for the implementation of a distributed simulation environment for interference detection and frequency assignment in naval radar units. The Java-based simulation is designed as a two level architecture incorporating i) multiple radars on each ship controlled through a lower-level intra-ship interference control module and, ii) multiple ships in a gr...

In this paper we propose one possible approach how to apply the concept of multiple-input multipleoutput (MIMO) to monostatic Frequency Modulated Continuous Wave (FMCW) High-Frequency Surface Wave Radar (HFSWR) in a maritime environment. Common tasks for a HFSWR are sea-state monitoring and ship detection, where our focus is on ship detection. A limiting factor in HFSWR is the available bandwid...

DC faults may cause severe disruptions in continuity of service to vital loads in a shipboard integrated power system, hence detection, isolation and protection against dc faults must be incorporated in both medium-voltage dc and low-voltage dc systems. A standard z-source breaker can identify and de-energize a faulty dc load on both buses quickly. However, until now, provisions for re-energizi...