Results 31 to 40 of about 1,456,467 (172)
Satellite Galaxies in the Illustris-1 Simulation: Poor Tracers of the Mass Distribution [PDF]
, 2018 Number density profiles are computed for the satellites of relatively isolated host galaxies in the Illustris-1 simulation. The mean total mass density of the hosts is well-fitted by an NFW profile. The number density profile for the complete satellite sample is inconsistent with NFW and, on scales < 0.5 r_200, the satellites do not trace the hosts ...
arxiv +1 more source
Design of Satellite Operations Subsystem Using Dynamic Fault Management Mechanism [PDF]
Journal of Astronomy and Space Sciences, 1998 Satellite Operations Subsystem in the Mission Control Element provides real-time monitoring of the satellite status and transmits telecommands to control the satellite during the contact time.
Jaehoon Kim, Heesook Mo, Woonchan Jung
doaj
Stability of Satellites in Closely Packed Planetary Systems [PDF]
, 2013 We perform numerical integrations of four-body (star, planet, planet, satellite) systems to investigate the stability of satellites in planetary Systems with Tightly-packed Inner Planets (STIPs). We find that the majority of closely-spaced stable two-planet systems can stably support satellites across a range of parameter-space which is only slightly ...
arxiv +1 more source
IEEE Access, 2020 In Wi-Fi fingerprint positioning, what we should most care about is the distance relationship between the user and the reference points (RP). However, most of the existing weighted k-nearest neighbor (WKNN) algorithms use the Euclidean distance of ...
Boyuan Wang +6 more
doaj +1 more source
Planetesimals and Satellitesimals: Formation of the Satellite Systems [PDF]
Space Sci.Rev.153:431-446,2010, 2009 The origin of the regular satellites ties directly to planetary formation in that the satellites form in gas and dust disks around the giant planets and may be viewed as mini-solar systems, involving a number of closely related underlying physical processes.
arxiv +1 more source
The imprint of galaxy mergers on satellite planes in a cosmological context [PDF]
, 2023 Flattened and kinematically correlated planes of dwarf satellite galaxies have been observed in the Local Volume. The slinging out of satellites during host galaxy mergers has been suggested as a formation mechanism for these peculiar structures. We statistically examined the impact of major mergers on present-time satellite systems for the first time ...
arxiv +1 more source
Comparison of GRUAN RS92 and RS41 Radiosonde Temperature Biases
Atmosphere, 2021 In this study, we validated the consistency of the GRUAN RS92 and RS41 datasets, versions EDT.1 and GDP.2, in the upper troposphere and lower stratosphere (200–20 hPa), through dual launch campaigns at the GRUAN site and using the radio occultation (RO ...
Xin Jing +3 more
doaj +1 more source
Satellite retrieval system [PDF]
, 1983 A satellite retrieval system with first and second pairs of coacting parallel bars are separately mounted in spaced parallel planes on the front of a spacecraft.
Loughead, T. E. +2 more
core +1 more source
Satellite Power System (SPS) public outreach experiment [PDF]
, 1980 An outreach experiment was conducted to improve the results of the satellite power system (SPS) concept development and evaluation program. The objectives of the outreach were to: (1) determine the areas of major concern relative to the SPS concept and ...
Mcneal, S. R.
core +2 more sources
Physical Layer Security in Satellite Communication: State-of-the-art and Open Problems [PDF]
arXiv, 2023 Satellite communications emerged as a promising extension to terrestrial networks in future 6G network research due to their extensive coverage in remote areas and ability to support the increasing traffic rate and heterogeneous networks. Like other wireless communication technologies, satellite signals are transmitted in a shared medium, making them ...
arxiv