Radiation source localization in gps-denied environments using aerial robots

F Mascarich, T Wilson, C Papachristos… - … on Robotics and …, 2018 - ieeexplore.ieee.org
This paper details the system and methods developed to enable autonomous nuclear
radiation source localization and map** using aerial robots in GPS-denied environments …

Gamma-ray point-source localization and sparse image reconstruction using Poisson likelihood

D Hellfeld, THY Joshi, MS Bandstra… - … on Nuclear Science, 2019 - ieeexplore.ieee.org
Gamma-ray imaging attempts to reconstruct the spatial and intensity distribution of gamma-
emitting radionuclides from a set of measurements. Generally, this problem is solved by …

Autonomous map** and spectroscopic analysis of distributed radiation fields using aerial robots

F Mascarich, M Kulkarni, P De Petris, T Wilson… - Autonomous …, 2023 - Springer
This paper presents a strategy for field estimation and informative path planning towards
autonomous map** and radiological characterization of distributed gamma radiation fields …

IMUPF-BIN: A new autonomous search method for radioactive sources

Y Guo, J Huo, X Hu, L Hu, M Ling - Progress in Nuclear Energy, 2024 - Elsevier
To solve the problem of mobile robots autonomously searching for unknown radioactive
sources, this paper proposes an automatic source search strategy, abbreviated as IMUPF …

Reconstructing the position and intensity of multiple gamma-ray point sources with a sparse parametric algorithm

JR Vavrek, D Hellfeld, MS Bandstra… - … on Nuclear Science, 2020 - ieeexplore.ieee.org
We present an experimental demonstration of additive point source localization (APSL), a
sparse parametric imaging algorithm that reconstructs the 3-D positions and activities of …

Distributed radiation field estimation and informative path planning for nuclear environment characterization

F Mascarich, C Papachristos, T Wilson… - … conference on robotics …, 2019 - ieeexplore.ieee.org
This paper details the system and methods designed to enable the autonomous estimation
of distributed nuclear radiation fields within complex and possibly GPS-denied …

Improved gamma-ray point source quantification in three dimensions by modeling attenuation in the scene

MS Bandstra, D Hellfeld, JR Vavrek… - … on Nuclear Science, 2021 - ieeexplore.ieee.org
Using a series of detector measurements taken at different locations to localize a source of
radiation is a well-studied problem. The source of radiation is sometimes constrained to a …

Localizing unknown radiation sources by unscented particle filtering based on divide-and-conquer sampling

Y Liu, Y Xuan, D Zhang, S Zou - Journal of Nuclear Science and …, 2022 - Taylor & Francis
Predictive estimation of radioactive sources using Bayesian theory is of great importance in
nuclear emergency response. To this aim, we put forward an unscented particle filtering …

[HTML][HTML] An autonomous radiation source detection policy based on deep reinforcement learning with generalized ability in unknown environments

H Hu, J Wang, A Chen, Y Liu - Nuclear Engineering and Technology, 2023 - Elsevier
Autonomous radiation source detection has long been studied for radiation emergencies.
Compared to conventional data-driven or path planning methods, deep reinforcement …

Autonomous distributed 3d radiation field estimation for nuclear environment characterization

F Mascarich, P De Petris, H Nguyen… - … on robotics and …, 2021 - ieeexplore.ieee.org
This paper contributes a method designed to enable autonomous distributed 3D nuclear
radiation field map**. The algorithm uses a single radiation sensor and a sequence of …