Value-Focused Thinking の拡張とその応用

Radar reflectivity of land and sea

Development of a quantitative risk assessment model for ship collisions in fairways

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.

Models and computational algorithms for maritime risk analysis: a review

A novel flexible model for piracy and robbery assessment of merchant ship operations

http://fhs.diva-portal.org/smash/get/diva2:622495/FULLTEXT02

Quantitative risk analysis - Ship security analysis for effective risk control options

Radar cross section constraints in flight-path optimization

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

On Modeling RCS of Aircraft for Flight Simulation

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

Martin Norsell

Papers

Quantitative risk analysis - Ship security analysis for effective risk control options

Radar cross section constraints in flight-path optimization

On Modeling RCS of Aircraft for Flight Simulation

Multistage Trajectory Optimization with Radar Range Constraints

Aircraft trajectories considering radar range constraints