Results 71 to 80 of about 513,787 (184)

Lunar Satellite Constellations in Frozen Low Orbits

Aerospace
This research studies the potential of frozen low lunar orbits to be used in the design of constellations for global and regional communication or navigation.
Mikhail Ovchinnikov, Maksim Shirobokov, Sergey Trofimov   +2 more
doaj   +1 more source

Autonomous Orbit Determination of LLO Satellite Using DRO–LLO Links and Lunar Laser Ranging

Aerospace
A stable and high-precision autonomous orbit determination scheme for a Low Lunar Orbit (LLO) spacecraft is proposed, leveraging satellite-to-satellite tracking (SST) measurement data and lunar laser ranging data.
Shixu Chen, Shuanglin Li, Jinghui Pu, Yingjie Xu, Wenbin Wang   +4 more
doaj   +1 more source

Integrated enhancement of BDS-3 precise orbit determination and PPP using multiple CENTISPACE™ LEO satellites

Satellite Navigation
Low Earth Orbit (LEO) navigation augmentation is widely recognized as a key development for next-generation Global Navigation Satellite System (GNSS), and its performance must be validated using real observations. This paper investigates the contribution
Hanlin Chen, Xin Xie, Tao Geng, Long Yang, Yanan Qin, Qiang Li, Chao Zhang, Qile Zhao   +7 more
doaj   +1 more source

Systemic design of the very-high-resolution imaging payload of an optical remote sensing satellite for launch into the VLEO using an small launch vehicle

Heliyon
The very low Earth orbit (VLEO), which includes orbits with altitudes of 100–450 km, has distinct advantages for remote-sensing spacecraft. Lower altitudes allow payloads with smaller dimensions, weight, and power to achieve performances similar to or ...
Mojtaba Abolghasemi Najafabadi, Iman Kazemi   +1 more
doaj   +1 more source

StreamGen: Connecting Populations of Streams and Shells to Their Host Galaxies

The Astrophysical Journal
In this work, we study how the abundance and dynamics of populations of disrupting satellite galaxies change systematically as a function of host galaxy properties.
Adriana Dropulic, Nora Shipp, Stacy Kim, Zeineb Mezghanni, Lina Necib, Mariangela Lisanti   +5 more
doaj   +1 more source

Development of a relative motion model for satellite formation flying around L2 [PDF]

, 2004
Paper given at Dynamics and Control of Systems and Structures in Space (DCSSS), 6th conference, Riomaggiore, Italy, July 2004A technique for satellite formation flying modelling in LEO is applied at L2.
Roberts, Jennifer A.
core   +1 more source

New periodic orbits in the solar sail three-body problem [PDF]

, 2011
We identify displaced periodic orbits in the circular restricted three-body problem, wher the third (small) body is a solar sail. In particular, we consider solar sail orbits in the earth-sun system which are high above the exliptic plane.
Biggs, J.D., Waters, T., McInnes, C.R.
core  

The Orbits of Uranus, Its Satellites and Rings, the Gravity Field of the Uranian System, and the Orientation of the Poles of Uranus and Its Satellites

The Astronomical Journal
R. A. Jacobson determined the orbits of the Uranian satellites, the masses of Uranus and its satellites, and the orientation of the pole of Uranus from Earth-based astrometry, Earth-based ring occultations, and observations acquired with the Voyager 2 ...
Robert A. Jacobson, Ryan S. Park
doaj   +1 more source

Next-Generation Mars Network Position, Navigation, and Timing for Future Robotic and Human Explorers. [PDF]

J Astronaut Sci
Rybak M, Ely T, Gustafson E.
europepmc   +1 more source

Nereid as a regular satellite of Neptune. [PDF]

Sci Adv
Belyakov M, Davis MR, Wong I, Batygin K, Brown ME.   +4 more
europepmc   +1 more source