NICOP - Propagating electromagnetic signals through complex built-up structures - Resilience of electronic components in the presence of EM noise and environmental uncertainty
Abstract
Propagating electromagnetic signals through complex built-up structures ~## Resilience of electronic components in the presence of:The Navy has an important requirement to be able to dominate the electronic spectrum for its scope of operations (information dominance, electronic protection, and electronic attack). A critical requirement is then to be able to predict appropriately the propagation of electromagnetic energy (from traditional signals to high power microwave) through apertures into and after multiple reflections inside the structure and its impingement upon devices/objects that can act as unwanted antennas. The small wavelengths and the multiple reflections inside complex structures make this problem especially challenging. This problem is important both for electronic protect as well as electronic attack.There is a simplistic model JREM (joint radio effect model) in use and there is a Random Chaos Model (RCM) that is being developed by both direct ONR money as well as support from an Air Force Center of Excellence of which Maryland and University of New Mexico are the key performers. However, the Random Chaos Model ignores the geometry of components and sub-components and simply assumes there are enough reflections that an appropriate ~chaos~ model can be used. The innovation in this proposal is to explicitly model the geometry and to model the flow of energy using a mesh based model of the geometry. This approach called DEA (dynamic energy analysis) starts from an exact description of the wave fields driven by the source radiators. The innovative approaches relies upon a (mathematical) connection the proposers observed of the Wigner transform of the field correlation function to classical flow or ray tracing equations, at least to least order. This approach is likely to be successful based upon the fact that the proposers have already shown this approach to work in the easier acoustic case (where one is interested in the propagation of structural noise and there are no polarization effects as in EM) and have applied it to problems including cargo ships for industrial concerns, and the substantial expertise of the performers. The Nottingham team (Tanner)has recently added Gradoni from the Maryland group so this will ensure that an outstanding collaboration will occur and that the two approaches can ultimately be combined.I spent an entire day with both Tanner and Gradoni and became convinced that they had a handle on their strategy and while it is a challenging problem, they are likely to succeed. I highly recommend this proposal for funding. In addition to my review, ONR HQ Ryan Hoffman has had the proposal externally reviewed and is providing funding. Substantial collaboration with the UMD is desirable and the travel costs in this proposal (number of trips, length, cost of each trip) are reasonable and per diem costs are below US allowed.It~s interesting to note that Tanner is a German and Gradoni is an Italian, and they both have obtained positions at a UK university, which speaks to the desire to have world class researchers regardless of origin.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 23, 2016
- Source ID
- N629091612115
Entities
People
- Gregor Tanner
Organizations
- Office of Naval Research
- United States Navy
- University of Nottingham