Results 21 to 30 of about 3,764 (285)

States' Responsibility to Operate Small Satellites in International Space Law [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2021
Many of the space applications that previously required the use of large, complex and expensive satellites have now been made possible by very small satellites due to the development of technology. The applicable international laws and regulations, which
Hamid Kazemi
doaj   +1 more source

A Sentinel-1 SAR imagery dataset for airstrips detection and segmentation in the Brazilian Amazon RainforestMendeley Data [PDF]

open access: yesData in Brief
The Brazilian Amazon Rainforest holds a large ecological and economic importance and is considered one of the most biodiverse regions on the planet. The region faces numerous challenges from illegal human activities that threaten its sustainability and ...
Leandro da Silva Gomes   +5 more
doaj   +2 more sources

The influence the horizontal structure of the forest on the passing the L1 range of navigation satellites signals [PDF]

open access: yesE3S Web of Conferences, 2021
Experimental data on the passing of signals from navigation satellites of the L1 range through forest plantations with an anisotropic horizontal tree arrangement structure are presented.
Sorokin Anatoly   +4 more
doaj   +1 more source

Photometric survey of the irregular satellites [PDF]

open access: yesIcarus, 2003
Submitted to Icarus, 43 pages including 5 ...
Grav, Tommy   +3 more
openaire   +2 more sources

Optimization in VHTS Satellite System Design with Irregular Beam Coverage for Non-Uniform Traffic Distribution

open access: yesRemote Sensing, 2021
Very High Throughput Satellites (VHTS) have a pivotal role in complementing terrestrial networks to increase traffic demand. VHTS systems currently assume a uniform distribution of traffic in the service area, but in a real system, traffic demands are ...
Flor G. Ortiz-Gomez   +3 more
doaj   +1 more source

Satellite image reconstruction from an irregular sampling [PDF]

open access: yes2008 IEEE International Conference on Acoustics, Speech and Signal Processing, 2008
We propose a new method to solve a problem of image restoration with many different aspects: reconstruction from irregular samples, deconvolution and denoising. The model we propose is robust to different kind of noises, in particular, impulse and Gaussian noise. We compare our results to the ones obtained in [1] and show that our problem presents some
Bughin, Eric   +2 more
openaire   +2 more sources

A Scheduling Method of Using Multiple SAR Satellites to Observe a Large Area

open access: yesSensors, 2023
This paper presents a scheduling problem of using multiple synthetic aperture radar (SAR) satellites to observe a large irregular area (SMA). SMA is usually considered as a kind of nonlinear combinatorial optimized problem and its solution space strongly
Qicun Zheng   +3 more
doaj   +1 more source

Analysis of a Simulated Optical GSO Survey Observation for the Effective Maintenance of the Catalogued Satellites and the Orbit Determination Strategy [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2015
A strategy is needed for a regional survey of geosynchronous orbits (GSOs) to monitor known space objects and detect uncataloged space objects. On the basis of the Inter-Agency Debris Committee’s recommendation regarding the protected region of ...
Jin Choi   +8 more
doaj   +1 more source

Design and Analysis of CubeSat Microwave Radiometer Constellations to Observe Temporal Variability of the Atmosphere

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Passive microwave satellite observations provide critical information for global forecast models, particularly in cloudy and/or precipitating conditions.
Yuriy V. Goncharenko   +4 more
doaj   +1 more source

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

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