IPv4 geolocation has been around for some time, but IPv6 geolocation is relatively new. This raises the question as to how the accuracy of IPv6 geolocation compares to the accuracy of IPv4 geolocation. Since IPv6 geolocation is a reasonably new topic, litte research has been done on its accuracy. In this study the accuracy is measured using a ground truth consisting of very precise locations of...

Automated geolocation of social media messages can benefit a variety of downstream applications. However, these geolocation systems are typically evaluated without attention to how changes in time impact geolocation. Since different people, in different locations write messages at different times, these factors can significantly vary the performance of a geolocation system over time. We demonst...

Tracing and locating the geographical location of users (Geolocation) is used extensively in today’s Internet. Whenever we, e.g., request a page from google we are unless there was a specific configuration made automatically forwarded to the page with the relevant language and amongst others, dependent on our location identified, specific commercials are presented. Especially within the area of...

This paper describes an application of a dual satellite geolocation (DSG) system on identifying and locating the unknown source of uplink sweeping interference. The geolocation system integrates the method of joint time difference of arrival (TDOA) and frequency difference of arrival (FDOA) with ephemeris correction technique which successfully demonstrated high accuracy in interference source ...

Geolocation techniques aim at determining the geographic location of an Internet host based on its IP address. Currently, measurement-based geolocation techniques disregard the buffering delays that may be introduced at each hop along the path taken by probe packets. To fill this gap, we propose the GeoBuD (Geolocation using Buffering Delay estimation) approach. Although the network delay and t...

This paper describes an application of a dual satellite geolocation (DSG) system on identifying and locating the unknown source of uplink sweeping interference. The geolocation system integrates the method of joint time difference of arrival (TDOA) and frequency difference of arrival (FDOA) with ephemeris correction technique which successfully demonstrated high accuracy in interference source ...

The model based on range and Doppler equations (RD model) is the most precise model for SAR geolocation, and therefore SAR geolocation based on this RD model has become more and more popular. Unfortunately, the RD method requires iterative solution, in most case, which is time-consuming and prone to poor optimization due to observation errors of parameters. In face of the huge mass of measured ...

IP based geolocation is a widely used geolocation technique because of its ability to geolocate the hosts where GPS or other techniques become ineffective or unavailable. Measurement-based geolocation techniques utilize landmarks to make end-to-end delay measurements and compute the host location based on delay to distance mappings. Fewer landmarks and/or inaccurate delay to distance mapping le...

Long-term time series analysis requires consistent data records from satellites. The Visible Infrared Imaging Radiometer Suite (VIIRS) onboard the Suomi National Polar orbiting Partner (S-NPP) satellite launched in 2011 requires a major effort to produce consistently calibrated sensor data records (SDR). Accurate VIIRS geolocation products are critical to other VIIRS products and products from ...