Author
Martin Norsell
Other affiliations: Royal Institute of Technology
Bio: Martin Norsell is an academic researcher from Swedish National Defence College. The author has contributed to research in topics: Radar cross-section & Radar. The author has an hindex of 7, co-authored 21 publications receiving 136 citations. Previous affiliations of Martin Norsell include Royal Institute of Technology.
Papers
More filters
TL;DR: In this paper, the authors present a more detailed ship security risk analysis than described in the International Ship and Port Facility Security code and evaluate to what extent this more detailed analysis increases ship security and facilitates the effective selection of risk control options.
41 citations
22 citations
TL;DR: High-resolution RCS matrices were used in an investigation of RCS matrix resolution, and an evaluation of different bilinear interpolation methods is presented, finding that the smallest RCS interpolation error was obtained using splines.
Abstract: This paper investigates the implementation of the radar cross section (RCS) of aircraft in modeling and simulation (M&S) More specifically, it addresses the tradeoff between accuracy and computational cost introduced by spatial RCS fluctuations High-resolution RCS matrices, generated using Physical Optics (PO), were used in an investigation of RCS matrix resolution, and an evaluation of different bilinear interpolation methods is presented The spatial Fourier transform was used for resolution analysis It was found that the smallest RCS interpolation error was obtained using splines Furthermore, results showed that the distribution of the relative interpolation error in detection range was well approximated by a log-normal distribution
19 citations
TL;DR: In this article, the problem of finding an optimal aircraft trajectory for long-distance flights in three dimensions subject to radar detection constraints is considered and a general point-mass model is not suitable because the time discretization needs to be very fine to resolve the rigid-body dynamics resulting in very large optimization problems.
Abstract: The problem of finding an optimal aircraft trajectory for long-distance flights in three dimensions subject to radar detection constraints is considered A general point-mass model previously developed is not suitable because the time discretization needs to be very fine to resolve the rigid-body dynamics resulting in very large optimization problems Different reduced mathematical models are derived and compared to the more general performance model Finally, a long-range mission involving two subsonic jet trainers approaching a radar target is numerically simulated The results indicate that the time a hostile radar has an approaching aircraft under surveillance can be greatly reduced by using the proposed methodology
17 citations
TL;DR: The problem of finding an optimal aircraft trajectory subject to constraints defining distance of detection to hostile radar stations is considered and an example in three dimensions when a Saab 105 approaches a radar station in level flight is investigated.
9 citations
Cited by
More filters
TL;DR: In this article, the authors developed a quantitative risk assessment (QRA) model to evaluate the risk of ship being involved in ship collisions which takes into account the frequency and consequence of all possible accident scenarios.
76 citations
TL;DR: A detailed literature review of over 180 papers about different threats, their consequences pertinent to the maritime industry, and a discussion on various risk assessment models and computational algorithms are provided.
Abstract: Due to the undesirable implications of maritime mishaps such as ship collisions and the consequent damages to maritime property; the safety and security of waterways, ports and other maritime assets are of the utmost importance to authorities and researches. Terrorist attacks, piracy, accidents and environmental damages are some of the concerns. This paper provides a detailed literature review of over 180 papers about different threats, their consequences pertinent to the maritime industry, and a discussion on various risk assessment models and computational algorithms. The methods are then categorized into three main groups: statistical, simulation and optimization models. Corresponding statistics of papers based on year of publication, region of case studies and methodology are also presented.
70 citations
TL;DR: An analytical model incorporating Bayesian reasoning is proposed to estimate the likelihood of a ship being hijacked in the Western Indian or Eastern African region and can be used by maritime stakeholders to make cost-effective anti-piracy decisions in their operations under uncertainties.
63 citations