IRNSS stand-alone positioning: first results in Australia

Stand-Alone Satellite-Based Global Positioning

Stand-Alone and Hybrid Positioning Using Asynchronous Pseudolites

global navigation satellite system (GNSS) receivers are usually unable to achieve satisfactory performance in difficult environments, such as open-pit mines, urban canyons and indoors. Pseudolites have the potential to extend GNSS usage and significantly improve receiver performance in such environments by providing additional navigation signals. This also applies to asynchronous pseudolite sys...

Was the IDIIOM the First Stand-Alone CAD Platform?

This article recounts the development of a stand-alone CAD platform, the IDIIOM. The IDIIOM was developed during the mid-1960s at Information Displays, Inc. (IDI), then in Mt. Vernon, N.Y. According to its creators, the IDIIOM was the first general-purpose design workstation, the first commercial CADD platform, and the first software drafting package to operate on its own computer without commu...

Stand-alone anterior lumbar interbody fusion – complications and perioperative results☆

OBJECTIVES Historically, anterior lumbar interbody fusion (ALIF) was related to high rates of intraoperative complications and adverse events related to interbody devices. In recent decades, there have been technical adjustments, and cages that are more suitable have emerged. The aim of this study is to evaluate the efficacy and complication rate of the use of stand-alone mini-ALIF using a self...

LocataNet: Intelligent time-synchronised pseudolite transceivers for cm-level stand-alone positioning

The use of GPS for indoor positioning poses difficult challenges due to very weak signal levels, and accuracies are typically of the order of tens to hundreds of metres at best. To overcome this severe limitation, Locata Corporation has invented a new positioning technology called Locata, for precision positioning both indoors and outside. Part of the “Locata technology” consists of a time-sync...