We propose Direct Position Estimation (DPE) utilizing non-line-of-sight (NLOS) GPS signals for urban navigation. In urban environments, buildings reflect GPS signals, leading to reception of NLOS GPS signals. In addition, buildings obstruct GPS signals, resulting in reduced GPS signal availability. We treat NLOS GPS signals as additional line-of-sight (LOS) GPS signals to virtual satellites at ...

The Global Positioning System (GPS) has slowly permeated into the civilian community and has become an essential accessory for the modern individual. Various commercial applications heavily rely on GPS technology. GPS has also started receiving attention in court cases, where it has been admissible as evidence leading to convictions or proving innocence. However, GPS is a radio-navigation syste...

GPS receivers are widely used in navigation and positioning, due to the global availability of GPS signals, its low cost and low power consumption. However, it does not work sufficiently in all signal environments. This raises the need to integrate GPS with other sensor systems (for instance, the inertial navigation system (INS)) to have a robust, continuous navigation solution regardless of th...

Next-generation transportation surveys will utilize Global Positioning Systems (GPS) to collect trip data. Due to their ubiquity, GPS-enabled mobile devices are becoming promising for use as survey tools. TRAC-IT is a mobile phone application that records travel behavior by collecting real-time GPS data and requiring minimal input from the user for data such as trip purpose, mode of transportat...

agriculture is a complex system science and the knowledge of it is consisting of much concepts and relationships. examinations in connection with site-specific farming have been carried out by our institute since 1998. precision farming is a way of agricultural production, which takes into account the in-field variability, a technology where the application-seeding, nutrient replacement, sprayi...

BACKGROUND Rising dementia prevalence rates rise combined with the policy objective of enabling people with dementia to remain living at home, means that there will be a growing demand for dementia care in the community setting. However, GPs are challenged by dementia care and have identified it as an area in which further training is needed. Previous studies of GPs dementia care educational ne...

BACKGROUND General Practitioners {GP} in Sweden prescribe more than 50% of all prescriptions. Scientific knowledge on the opinions of GPs regarding drug information has been sparse. Such knowledge could be valuable when designing evidence-based drug information to GPs. GPs' opinions on public- and industry-provided drug information are presented in this article. METHODS A cross-sectional stud...