The Ephi system for VLF direction finding

A Virtual Rsns Direction Finding Antenna System

RFID-based Direction Finding Signage System (DFSS) for Healthcare Facilities

As RFID technology matures, it has huge potential for numerous applications in disparate fields of study. Due to the potential benefit and transformational technology that RFID promises, the United States Department of Defense (DoD) is dedicated to adopting passive RFID technology (United States Department of Defense suppliers’ passive RFID Information guide version 10.0, 2008). RFID has potent...

Application of Theground-based Direction Finding Techniquesto the Vlf Wave Transmittedat Geomagnetic Conjugate Point in Mid-latitude

The multiple signal classification (MUSIC) method and the wave distribution function (WDF) method are applied to the artificial VLF wave propagation from Khabarovsk through the magnetospheric duct to the conjugate point Ceduna (L = 1.8). The estimated arriving direction and the wave energy indicates that the location of the termination of the magnetospheric duct fluctuates related to the geomag...

The Quasi-Normal Direction (QND) Method: An Efficient Method for Finding the Pareto Frontier in Multi-Objective Optimization Problems

In managerial and economic applications, there appear problems in which the goal is to simultaneously optimize several criteria functions (CFs). However, since the CFs are in conflict with each other in such cases, there is not a feasible point available at which all CFs could be optimized simultaneously. Thus, in such cases, a set of points, referred to as 'non-dominate' points (NDPs), will be...

Gps Direction Finding

GNSS receivers provide position information in a convenient way. However, additional orientation information cannot be fulfilled directly by a single antenna receiver up to now. This paper describes an approach for determination of orientation using a single GNSS receiver based only on its own static observations. As estimable base quantity, satellite positions are used as a reference in the mo...