研究目的
Investigating the probabilistic modelling of stray laser energy (SLE) hazards from a fifth-generation low-observable laser designator system integrated within an aircraft, as opposed to traditional pod-based configurations, to assess potential risks to unprotected observers.
研究成果
The study demonstrates that probabilistic modelling can effectively assess the risks of SLE emissions from fifth-generation laser designator systems, providing a more nuanced understanding of potential hazards than traditional deterministic methods. The simulation results indicate that SLE risks can be predicted for representative training range attack manoeuvres, though further refinement of the mathematical analysis and additional information on aircraft and laser system operation are needed for comprehensive hazard assessment.
研究不足
The analysis is constrained by the complexity of the optical path geometries within the window assembly and the variability in aircraft behavior during attack manoeuvres. The simulation model's accuracy depends on the availability of detailed performance statistics for the aircraft and laser system, which may be limited due to commercial sensitivities.
1：Experimental Design and Method Selection:
The study employs probabilistic modelling to assess the hazards of SLE emissions from a faceted laser exit window fixed to an aircraft fuselage. The methodology includes the development of a computer-based simulation model to predict the directions and intensities of SLE emissions based on the aircraft's behavior and laser system operation.
2：Sample Selection and Data Sources:
The analysis is based on a hypothetical integrated laser designator system, with parameters derived from known fifth-generation aircraft and laser system designs.
3：List of Experimental Equipment and Materials:
The study utilizes a simulation tool developed by the UK Ministry of Defence (MoD) in conjunction with the United States Air Force (USAF) to model the SLE scatter patterns.
4：Experimental Procedures and Operational Workflow:
The simulation traces a bundle of vectors representing the laser beam through the beam steering mechanism and onto the point of intersection with the window assembly, recording the points of intersection and directions of reflection.
5：Data Analysis Methods:
The UK probabilistic laser hazard assessment model (PLHAM) is applied to evaluate the risk of ocular damage from SLE irradiation, considering atmospheric scintillation and retinal tissue dose-response.
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