Laser propagation in heterogeneous media and applications to off-axis reconstructions
Abstract
Laser source detection is extremely important in modern military applications, as laser assisted weapons play an ever increasing role in the modern warfare. Effective countermeasures can only be created if one can develop stable techniques for the reconstructionof both the direction of the laser propagation and the location of its original source. This is difficult as one can usually rely only on off-axis measurements.This proposal aims to address two major di?culties in theoff-axis reconstructio problem. The first one is a careful modeling of the inverse problem, which concerns the reconstruction of the source structure from the available measurements. For various plausible models for laser propagation in turbid atmospheres, we will investigate which parameters of the source may or may not be reconstructed from the available measurements, and how stable the reconstructions are with respect to the noise measurements.The second difficulty concerns the forward modeling of the beam. Since lasers aretypically high-intensity in many applications, non-linear models of wave propagation in turbid (random) atmospheres need to be considered. We willLaser propagation in heterogeneous media and applications to off-axis reconstructions apply and generalize the methods developed by the PIs to obtain effective models that are both sufficiently rih tocapture the main physical components of the wave propagation while at the same time sufficiently compact to allow us to solve the aforementioned inverse problem.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 04, 2017
- Source ID
- N000141712145
Entities
People
- Leonid V. Ryzhik
Organizations
- Office of Naval Research
- Stanford University
- United States Navy