Results 1 to 10 of about 733 (95)
Spatial Geometry Design of a Low Earth Orbit Constellation for Iranian Regional Navigation Satellite System [PDF]
Journal of Aerospace Technology and Management, 2021 The regional navigation satellite system (RNSS) is recently used in some countries to cover or enhance their local navigation. The most important satellite navigation systems to date are in the Earth medium orbit (MEO) and Earth synchronous Earth orbit ...
Reza Zardashti, Shiva Emami
doaj +2 more sources
Analytical design and performance analysis of LEO mega chain satellite constellation
Xibei Gongye Daxue Xuebao, 2022 With the development of microsatellite technology and the growth of ground reconnaissance demand, the rapid design of a LEO constellation with minimum satellite number, low revisit time (within 10 minutes), and permanent inter-satellite links has become ...
ZHENG Pengfei, CHEN Hongyu, GUO Chongbin
doaj +1 more source
Cross-Domain Fusion Constellation Design of Communication, Navigation and Remote Sensing
Applied Sciences, 2023 Low earth orbit (LEO) mega-constellations have once again triggered a wave of space-based system construction. On the one hand, LEO communication, LEO navigation, LEO remote sensing constellations and so on are proposed.
Junxiang Qin +4 more
doaj +1 more source
International Journal of Aerospace Engineering, 2021 The advantages of the Low Earth Orbit (LEO) satellite include low-latency communications, shorter positioning time, higher positioning accuracy, and lower launching, building, and maintenance costs.
Jing Ren +4 more
doaj +1 more source
Low-Orbit Large-Scale Communication Satellite Constellation Configuration Performance Assessment
International Journal of Aerospace Engineering, 2022 A constellation configuration performance evaluation method is proposed for the performance evaluation of the low-orbit large-scale communication satellite constellations.
Tianyu Sun, Min Hu, Chaoming Yun
doaj +1 more source
Optimal Progressive Pitch for OneWeb Constellation with Seamless Coverage
Sensors, 2022 Large-scale broadband low earth orbit (LEO) satellite systems have become a possibility due to decreased launch costs and rapidly evolving technology. Preventing huge LEO satellite constellations from interfering with the geostationary earth orbit (GSO ...
Cheng Zou +5 more
doaj +1 more source
Remote Sensing, 2021 The development of small-satellite technologies allows the low Earth orbit intersatellite link (LEO-LEO) occultation method to observe the Earth’s atmosphere with global coverage and acceptable costs using electromagnetic signals, in which the L/X/K/M ...
Congliang Liu +10 more
doaj +1 more source
Optimal Walker Constellation Design of LEO-Based Global Navigation and Augmentation System
Remote Sensing, 2020 Low Earth orbit (LEO) satellites located at altitudes of 500 km~1500 km can carry much stronger signals and move faster than medium Earth orbit (MEO) satellites at about a 20,000 km altitude.
Meiqian Guan +4 more
doaj +1 more source
The Design and Maintenance of Low-Orbit Navigation Constellation for Traffic Control in a Smart City
Sensors, 2022 The traffic control issue in the smart city scenario gives rise to the higher requirements of Global Navigation Satellite System (GNSS) services, especially in terms of navigation accuracy, together with coverage continuity, and multiplicity.
Yi Zheng, Baojun Lin, Rui Li, Yutong Liu
doaj +1 more source
Extended Geometry and Probability Model for GNSS+ Constellation Performance Evaluation
Remote Sensing, 2020 We proposed an extended geometry and probability model (EGAPM) to analyze the performance of various kinds of (Global Navigation Satellite System) GNSS+ constellation design scenarios in terms of satellite visibility and dilution of precision (DOP) et al.
Lingdong Meng +4 more
doaj +1 more source