Using AsteRxi GNSS/MEMS IMU receiver in a container positioning system
High-end GNSS receivers are deployed in rapidly increasing numbers in industrial applications. Their challenging operational environment exposes the vulnerability of GNSS technology. For example, container terminal operators in harbors are increasingly using GNSS positioning for their container positioning systems. The primary goal of using GNSS in such an application is to reduce the amount of lost containers for economical and safety reasons. Therefore, it is important to track each container in a reliable and accurate manner. While this is typically not an issue for the positioning of containers on the yard for professional GNSS receivers due to open-sky conditions, problems arise below cranes and in the vicinity of ship hulls. At these locations, a GNSS-only position solution is insufficient due to the large metal surfaces which cause low measurement availability and increase the possibility that signals are tracked via indirect paths.
Abstract This study contributes to the literature on socially responsible investing by examining the diversification potential of commodities, specifically oil, gold and clean energy together with the Brazilian Corporate Sustainability Index (ISE). Multivariate GARCH models are used to model volatility spillovers and conditional correlation in pairs of stocks containing ISE. Specifically, A-BEKK and A-DCC models with spillovers are estimated. The models’ results are used to compute and analyze the optimal weights and hedge ratios for stock portfolio holdings. The greatest benefit from diversification is obtained through the acquisition of gold and then OVX.