Summaries - Office of Research & Innovation
Back Estimated Buried IED Properties from LWIR Surface Temperature Maps
|Division||Graduate School of Engineering & Applied Science|
Hooper, Joseph P.
|Sponsor||Office of Naval Research (Navy)|
|Summary||Our goal is to develop improved methods for determining buried IED properties based on surface temperature measurements from long-wave infrared imaging. Buried explosives possess thermal diffusivities and heat capacities different from the soil, resulting in a detectable variation in soil temperature above the device. Given a series of surface temperature measurements, we seek to solve the inverse problem in which the surface soil temperatures are used to determine the thermal properties and shape of a buried object and if it is consistent with an IED. We begin with a review of common thermal models for buried landmines, and validate these models with infrared imaging of controlled buried objects at NPS. Particular focus will be given to the effect of recently disturbed soil on thermal variation. We will next attempt the basic inverse problem with no regularization; that is, to use the selected thermal model in a constrained optimization and estimate the device properties given only a surface temperature map. Finally, we begin work on standard regularization methods to improve the ill-posed nature of the mapping from surface temperature to device properties. In-house thermal imaging of buried device simulants will be used to validate all numerical techniques.|
|Publications||Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal|
|Data||Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal|