Results 11 to 20 of about 10,241 (237)

A Survey for Recent Techniques and Algorithms of Geolocation and Target Tracking in Wireless and Satellite Systems

open access: yesApplied Sciences, 2021
A single Radio-Frequency Interference (RFI) is a disturbance source of modern wireless systems depending on Global Navigation Satellite Systems (GNSS) and Satellite Communication (SatCom).
Abulasad Elgamoudi   +3 more
doaj   +1 more source

A delay deviation tolerance IP geolocation method with error estimation

open access: yesScientific Reports, 2022
IP geolocation is an important basis of location-based network services, while error estimation is an important basis for judging the reliability of results. Most of the existing IP geolocation algorithms cannot estimate the geolocation error.
Shuodi Zu   +3 more
doaj   +1 more source

Geolocation in the Browser

open access: yesCompanion Proceedings of The 2019 World Wide Web Conference, 2019
Geolocation is arguably one of the most powerful capabilities of smartphones and a lot of attention has been paid to native applications that make use of it. The discontinued Google Gears plugin was one of the first approaches to access exact location data on the Web as well, apart from server-side coarse location lookups based on Internet Protocol (ip)
Thomas Steiner   +2 more
openaire   +1 more source

AN IMPROVED METHOD OF AGM FOR HIGH PRECISION GEOLOCATION OF SAR IMAGES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
In order to take full advantage of SAR images, it is necessary to obtain the high precision location of the image. During the geometric correction process of images, to ensure the accuracy of image geometric correction and extract the effective mapping ...
G. Zhou   +7 more
doaj   +1 more source

Towards IP geolocation with intermediate routers based on topology discovery

open access: yesCybersecurity, 2019
IP geolocation determines geographical location by the IP address of Internet hosts. IP geolocation is widely used by target advertising, online fraud detection, cyber-attacks attribution and so on. It has gained much more attentions in these years since
Zhihao Wang   +5 more
doaj   +1 more source

Optimized Method for Generating and Acquiring GPS Gold Codes

open access: yesInternational Journal of Antennas and Propagation, 2015
We propose a simpler and faster Gold codes generator, which can be efficiently initialized to any desired code, with a minimum delay. Its principle consists of generating only one sequence (code number 1) from which we can produce all the other different
Khaled Rouabah   +4 more
doaj   +1 more source

Assessment of the NOAA S-NPP VIIRS Geolocation Reprocessing Improvements

open access: yesRemote Sensing, 2017
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
Wenhui Wang   +4 more
doaj   +1 more source

A Geolocation Databases Study [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2011
The geographical location of Internet IP addresses is important for academic research, commercial and homeland security applications. Thus, both commercial and academic databases and tools are available for mapping IP addresses to geographic locations.
Yuval Shavitt, Noa Zilberman
openaire   +1 more source

Automatic geolocation of targets tracked by aerial imaging platforms using satellite imagery [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
Tracking of targets from aerial platforms is an important activity in several applications, especially surveillance. Knowled ge of geolocation of these targets adds additional significant and useful information to the application.
P. K. Shukla   +3 more
doaj   +1 more source

A Method for Spaceborne SAR Geolocation Based on Continuously Moving Geometry

open access: yesLeida xuebao, 2013
Geolocation is a very important step in Synthetic Aperture Radar (SAR) data processing. The precision of geolocation severely affects the applications of SAR images. This paper analyzes the influences on SAR geolocation caused by the traditional “stop-go”
Qiu Xiao-lan   +2 more
doaj   +1 more source

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