Cooperative environment recognition utilizing UWB waveforms and CNNs

Cooperative navigation enhances localization performance and situational awareness in challenging conditions, such as in tactical and first responder operations. In this work we demonstrate how the waveform of the Ultra Wideband (UWB) signal used for ranging in cooperative navigation can also be used to detect the environment surrounding the user of the navigation system. Different environments affect the wave-form in different ways, and thus the received waveform contains features characteristic to the environment around the receiver. We show how the received UWB signal waveform can be used in a Convolutional Neural Network (CNN) in order to determine whether the user is outdoors, indoors or in a forest. The environment is recognized correctly more than 90% of the time. © 2020 German Institute of Navigation - DGON.Peer reviewe

Analytic Solutions of The Wheeler-DeWitt Equation in Spherically Symmetric Space-time

We study the quantum theory of the Einstein-Maxwell action with a cosmological term in the spherically symmetric space-time, and explored quantum black hole solutions in Reissner-Nordstrom-de Sitter geometry. We succeeded to obtain analytic solutions to satisfy both the energy and momentum constraints.Comment: LaTeX file, 15 page

Linkage of murine (T,G)-A- -L-specific idiotypic determinants to the heavy chain constant region allotypic markers

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/46735/1/251_2005_Article_BF01567784.pd

PARFORCE: Objectives and Achievements

Understanding the formation of natural particles in the atmosphere, and their growth to radiatively active sizes, is critical to quantifying the role of anthropogenic emissions on cloud formation, climate change and public health. Only a few regions have been identified as strong natural sources of aerosols in the boundary layer: in particular, the coastal region seems to be the strongest natural source of these new particles. The PARFORCE program was designed to elucidate and understand the underlying processes leading to observed coastal nucleation and to quantify the factors promoting coastal nucleation. Initial results indicate that nucleation rates in the coastal environment are of the order of 107 cm-3 s-1 and can be explained by ternary nucleation of sulphuric acid, water vapor and ammonia; however, growth to detectable sizes can only be explained by additional condensation of, probably, organic vapor-otherwise these new stable embryos are lost due to coagulation. The primary biogenic condensing species leading to the observed particle concentrations is thought to be a halocarbon derivative. Peak concentration of particles at sizes >3 nm can reach 1,000,000 cm-3 after a coastal nucleation event and these events occur almost on a daily basis over considerable spatial scale