Non-line-of-sight (NLOS) geolocation becomes an important issue with the fast development of mobile communications in recent years. Several methods have been proposed to address this problem. However, a comprehensive study on the best geolocation accuracy that these methods may possibly achieve is called for. In [1], [2], we reported a unified analysis of the CramerRao Lower Bound (CRLB) and ac...

The signal structure performance of a direct sequence spread spectrum (DSSS) code division multiple access (CDMA) frequency division multiple access (FDMA) pseudolite indoor communication and localization (geolocation) system is presented and discussed in this paper. The signal structure of a DSSSFCDMA (or C-CDMA) pseudolite indoor geolocation system appears to elegantly solve the near-far prob...

The geographical location is vital to geospatial applications such as event detection, geo-aware recommendation and local search. Previous research on this topic has investigated geolocation prediction framework via conducting pre-partitioning and applying classification methods. These existing approaches target user’s geolocation all at once via concatenation of tweets. In this paper, we study...

Existing techniques can geolocate an IP address to a metropolitan area. Through simulation, we evaluate the performance of these existing techniques within a metropolitan area network. We identify differences between metropolitan area networks and the wide area network. We describe and evaluate new techniques which are designed specifically for use on metropolitan area networks. We present Hop-...

Geolocation is the task of identifying a social media user’s primary location, and in natural language processing, there is a growing literature on to what extent automated analysis of social media posts can help. However, not all content features are equally revealing of a user’s location. In this paper, we evaluate nine name entity (NE) types. Using various metrics, we find that GEO-LOC, FACI...

The W3C’s Geolocation API may rapidly standardize the transmission of location information on the Web, but, in dealing with such sensitive information, it also raises serious privacy concerns. We analyze the manner and extent to which the current W3C Geolocation API provides mechanisms to support privacy. We propose a privacy framework for the consideration of location information and use it to...

ABSTRACT Non-line-of-sight (NLOS) geolocation becomes an important issue with the fast development of mobile communications in recent years. Several methods have been proposed to address this problem. But we believe that a more comprehensive study on the best geolocation accuracy that these methods may possibly achieve is imperative. In [1], we developed a unified analysis of the Cramer-Rao Low...

Citation: Jaeger A, Feare CJ, Summers RW, Lebarbenchon C, Larose CS and Le Corre M (2017) Geolocation Reveals Year-Round at-Sea Distribution and Activity of a Superabundant Tropical Seabird, the Sooty Tern Onychoprion fuscatus. Front. Mar. Sci. 4:394. doi: 10.3389/fmars.2017.00394 Geolocation Reveals Year-Round at-Sea Distribution and Activity of a Superabundant Tropical Seabird, the Sooty Tern...

Mashups showing the geographic location of the authors of social media content are popular. They generally depend on the authors reporting their own location. For blogs, automated geolocation strategies using IP address and domain name are not adequate for determining an author’s location. Instead, we detail textual geolocation techniques suitable for tagging social media data, facilitating dev...

Geographical location is vital to geospatial applications like local search and event detection. In this paper, we investigate and improve on the task of text-based geolocation prediction of Twitter users. Previous studies on this topic have typically assumed that geographical references (e.g., gazetteer terms, dialectal words) in a text are indicative of its author’s location. However, these r...