Results 21 to 30 of about 54,210 (272)

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

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

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

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

Software-only TDOA/RTF positioning for 3G WCDMA wireless network [PDF]

open access: yes, 2008
A hybrid location finding technique based oil time difference of arrival (TDOA) with round-trip time (RTT) measurements is proposed for a wideband code division Multiple access (WCDMA) network.
Chen   +7 more
core   +1 more source

City-Level IP Geolocation Algorithm Based on PoP Network Topology

open access: yesIEEE Access, 2018
The existing city-level IP geolocation algorithms determine the location of IP by delay measurement and landmark comparison, and thus, the geolocation ability of these algorithms is affected by the delay precision and the number of landmarks.
Shuodi Zu   +4 more
doaj   +1 more source

Geolocation Assessment and Optimization for OMPS Nadir Mapper: Methodology

open access: yesRemote Sensing, 2022
Onboard both the Suomi National Polar-orbiting Partnership and Joint Polar Satellite System (JPSS) series of satellites, the Ozone Mapping and Profiler Suite Nadir Mapper (OMPS-NM) is a new generation of a total ozone column sensor and is used to ...
Likun Wang   +7 more
doaj   +1 more source

Willingness to participate in geolocation-based research

open access: yesPLoS ONE, 2022
Among the new research possibilities offered by smartphones, collecting geolocation data (e.g., GPS coordinates) holds a prominent position, allowing the investigation of individuals’ mobility with greater precision and less effort than conventional data
Carlos Ochoa Gómez
doaj   +2 more sources

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