Results 21 to 30 of about 3,193 (251)

Informal settlements in Baghdad city [PDF]

open access: yesE3S Web of Conferences, 2021
The research deals with the issue of slums, urban sprawl on agriculture land and its impact on the city of Baghdad. This topic needs close attention because it has become a problem facing the city of Baghdad through recruiting agricultural lands and ...
Repeva Anastasia
doaj   +1 more source

Debris rings from extrasolar irregular satellites

open access: yesMonthly Notices of the Royal Astronomical Society, 2023
ABSTRACT Irregular satellites are the minor bodies found orbiting all four Solar system giant planets, with large semimajor axes, eccentricities, and inclinations. Previous studies have determined that the Solar system’s irregular satellites are extremely collisionally evolved populations today, having lost ∼99 per cent of their initial ...
Kevin T Hayakawa, Bradley M S Hansen
openaire   +2 more sources

NEOWISE: OBSERVATIONS OF THE IRREGULAR SATELLITES OF JUPITER AND SATURN [PDF]

open access: yesThe Astrophysical Journal, 2015
We present thermal model fits for 11 Jovian and 3 Saturnian irregular satellites based on measurements from the WISE/NEOWISE dataset. Our fits confirm spacecraft-measured diameters for the objects with in situ observations (Himalia and Phoebe) and provide diameters and albedo for 12 previously unmeasured objects, 10 Jovian and 2 Saturnian irregular ...
Grav, T.   +7 more
openaire   +3 more sources

Method of determining the coordinates of the radio signal source in satellite communication systems

open access: yesКосмические аппараты и технологии, 2023
Telecommunications have penetrated deeply into all spheres of human activity. Due to the use of digital technologies, it has become possible to transmit and receive information of various kinds in one stream (not separately).
R. S. Blumberg   +2 more
doaj   +1 more source

A REGION VOID OF IRREGULAR SATELLITES AROUND JUPITER [PDF]

open access: yesThe Astronomical Journal, 2008
An interesting feature of the giant planets of our solar system is the existence of regions around these objects where no irregular satellites are observed. Surveys have shown that, around Jupiter, such a region extends from the outermost regular satellite Callisto, to the vicinity of Themisto, the innermost irregular satellite.
Haghighipour, N., Jewitt, D.
openaire   +2 more sources

Large-Scale, Multiple Level-of-Detail Change Detection from Remote Sensing Imagery Using Deep Visual Feature Clustering

open access: yesRemote Sensing, 2021
In the era of big data, where massive amounts of remotely sensed imagery can be obtained from various satellites accompanied by the rapid change in the surface of the Earth, new techniques for large-scale change detection are necessary to facilitate ...
Rasha S. Gargees, Grant J. Scott
doaj   +1 more source

A Real-Time Linear Prediction Algorithm for Detecting Abnormal BDS-2/BDS-3 Satellite Clock Offsets

open access: yesRemote Sensing, 2023
Due to space environment interference, imperfect data processing model, and the performance of atomic clocks, real-time satellite clock products often contain outliers or irregular biases.
Yaping Gao   +6 more
doaj   +1 more source

Orbital and Collisional Evolution of the Irregular Satellites [PDF]

open access: yesThe Astronomical Journal, 2003
The irregular moons of the Jovian planets are a puzzling part of the solar system inventory. Unlike regular satellites, the irregular moons revolve around planets at large distances in tilted and eccentric orbits. Their origin, which is intimately linked with the origin of the planets themselves, is yet to be explained.
David Nesvorn   +3 more
openaire   +1 more source

Aerial Imagery Based on Commercial Flights as Remote Sensing Platform

open access: yesSensors, 2020
Remote sensing is commonly performed via airborne platforms such as satellites, specialized aircraft, and unmanned aerial systems (UASs), which perform airborne photography using mounted cameras.
Toni Mastelic   +3 more
doaj   +1 more source

Combining OC-SVMs With LSTM for Detecting Anomalies in Telemetry Data With Irregular Intervals

open access: yesIEEE Access, 2020
To ensure the safety and stability of spacecrafts of which thousands of telemetry parameters are monitored, fast and accurate response to anomalies or potential hazards is very important and challenging. This task becomes more difficult when the obtained
Junfeng Wu   +4 more
doaj   +1 more source

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