Spatial Geometry Design of a Low Earth Orbit Constellation for Iranian Regional Navigation Satellite System by Reza Zardashti, Shiva Emami

“…Therefore, in this study, the spatial geometry of a LEO constellation is designed for Iran to increase the required regional navigation performance. …”
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Analytical design and performance analysis of LEO mega chain satellite constellation by ZHENG Pengfei, CHEN Hongyu, GUO Chongbin

“…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 a hotspot and difficulty in constellation design. …”
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Digital Twin Technology-Based Networking Solution in Low Earth Orbit Satellite Constellations by Ci He, Yasheng Zhang, Jia Ke, Mingwu Yao, Chen Chen

“…Finally, a low Earth orbit (LEO) constellation twin validation environment is constructed to verify the networking protocols at various stages. …”
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Feasibility of Using Beam Steering to Mitigate Ku-Band LEO-to-GEO Interference by Alex Hills, Jon M. Peha, Jens Munk

“…We describe the use of beam steering to mitigate such interference and consider its feasibility for currently deployed LEO constellations. We find that beam steering appears to be a practical and effective approach for a LEO constellation that has this capability and uses sufficiently narrow beams.…”
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Dynamic Characterization of a High-Altitude Balloon during a Flight Campaign for the Detection of ISM Radio Background in the Stratosphere by Matteo Gemignani, Salvo Marcuccio

“…The work reported here was motivated by the need to perform an experimental assessment of the radio frequency (RF) background present in the ISM (Industrial, Scientific and Medical) bands, namely 868 MHz (Ultra High Frequency—UHF) and 2.4 GHz (S-Band), simulating the operational environment of a Low Earth Orbit (LEO) constellation forInternet of Things (IoT) telecommunications. …”
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A Distributed Formation Joint Network Navigation and Positioning Algorithm by Lvyang Ye, Yikang Yang, Jiangang Ma, Lingyu Deng, Hengnian Li

“…Finally, based on the designed LEO constellation, the universality, effectiveness, superiority, and potential superiority of algorithm are verified, respectively. …”
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Spatial Geometry Design of a Low Earth Orbit Constellation for Iranian Regional Navigation Satellite System by Reza Zardashti, Shiva Emami

“…Therefore, in this study, the spatial geometry of a LEO constellation is designed for Iran to increase the required regional navigation performance. …”
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A Disruption Tolerant Distributed Routing Algorithm in LEO Satellite Networks by Jifeng Jin, Feng Tian, Zijian Yang, Hao Di, Guotong Li

“…The low earth orbit (LEO) constellation network has become a promising approach to provide global communication services, due to its advantages in wide global coverage, low transmission delay, and convenient networking. …”
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Rapid Detection and Orbital Parameters’ Determination for Fast-Approaching Non-Cooperative Target to the Space Station Based on Fly-around Nano-Satellite by Chong Sun, Yongqing Sun, Xiaozhou Yu, Qun Fang

“…Non-cooperative targets, such as space debris, defunct spacecrafts and LEO constellation satellites, have brought serious risks to the space station. …”
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LEO Enhanced Global Navigation Satellite System (LeGNSS): progress, opportunities, and challenges by Haibo Ge, Bofeng Li, Song Jia, Liangwei Nie, Tianhao Wu, Zhe Yang, Jingzhe Shang, Yanning Zheng, Maorong Ge

“…The convergence time can be shortened within 1 minute if appropriate LEO constellations are deployed. However, there are still some issues to overcome, such as the optimization of LEO constellation as well as the real time LEO precise orbit and clock determination.…”
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A Two-Hops State-Aware Routing Strategy Based on Deep Reinforcement Learning for LEO Satellite Networks by Cheng Wang, Huiwen Wang, Weidong Wang

“…However, arbitrary flow arrival and uneven traffic load among areas bring about unbalanced traffic distribution over the LEO constellation. Therefore, the routing strategy in LEO networks should have the ability to adjust routing paths based on changes in network status adaptively. …”
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LEO Satellite Downlink Distributed Jamming Optimization Method Using a Non-Dominated Sorting Genetic Algorithm by Chengkai Tang, Jiawei Ding, Lingling Zhang

“…Field jamming experiments were conducted in the southwest outskirts of Xi’an, China, targeting the LEO constellation of the China Satellite Network. The results indicate that under the condition that the jamming coverage rate is no less than 90%, the proposed method maximizes jamming power, minimizes time delay, and minimizes frequency compensation compared to existing jamming optimization methods, effectively improving the real-time jamming performance and success rate.…”
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Analysis of Initial Deployment Strategy for Low-Orbit Large-Scale Constellations by Feifei Li, Min Hu, Bin Che, Huaibin Yang, Yuancang Cheng

“…Firstly, MonteCarlo simulation was used to simulate the deviation of satellite initial orbit elements, and the evolution law of ascending ascension point and phase angle of different constellations was analyzed and, secondly, establish the initialization phase constellation deployment and the ascending node right ascension deployment of mathematical equations, using Starlink constellation (V1.0-L3, 8) satellite TLE data; initialization of Leo constellation orbit plane is analyzed, by considering the orbit bias satellite simulation data; the same orbital plane satellite initialization phase deployment method is analyzed; finally, this paper provides some suggestions for the future deployment and maintenance control strategy of low-orbit constellation.…”
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Fast-Convergence Reinforcement Learning for Routing in LEO Satellite Networks by Zhaolong Ding, Huijie Liu, Feng Tian, Zijian Yang, Nan Wang

“…Fast convergence routing is a critical issue for Low Earth Orbit (LEO) constellation networks because these networks have dynamic topology changes, and transmission requirements can vary over time. …”
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Multi-LEO Satellite Stereo Winds by James L. Carr, Dong L. Wu, Mariel D. Friberg, Tyler C. Summers

“…The most promising multi-LEO constellation studied consists of Terra/MODIS and Sentinel-3/SLSTR. …”
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Integrity Monitoring of PPP-RTK Positioning; Part II: LEO Augmentation by Kan Wang, Ahmed El-Mowafy, Wei Wang, Long Yang, Xuhai Yang

“…Using 1 Hz simulated data around Beijing for global positioning system (GPS)/Galileo/Beidou navigation satellite system (BDS)-3 and the tested LEO constellation with 150 satellites on L1/L5, it was found that the convergence of the formal horizontal precision can be significantly shortened in the ambiguity-float case, especially for the single-constellation scenarios with low precision of the interpolated ionospheric delays. …”
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Direct-to-Satellite IoT Slotted Aloha Systems with Multiple Satellites and Unequal Erasure Probabilities by Felipe Augusto Tondo, Samuel Montejo-Sánchez, Marcelo Eduardo Pellenz, Sandra Céspedes, Richard Demo Souza

“…Next, we introduce an intelligent traffic load distribution (ITLD) strategy, which, by choosing between a non-uniform allocation and the uniform traffic load distribution, guarantees a high overall system throughput, by allocating more appropriate amounts of traffic load at different positions (i.e., different sets of erasure probabilities) of the LEO constellation with respect to the IoT cluster. Finally, the results show that ITLD, a mechanism with low implementation complexity, allows the system to be much more scalable, intelligently exploiting the potential of the different positions of the satellite constellation.…”
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Characterization of commercial step-down converter performance in the low Earth orbit radiation environment by Aguilar, Alexa Christine.

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The Design and Maintenance of Low-Orbit Navigation Constellation for Traffic Control in a Smart City by Yi Zheng, Baojun Lin, Rui Li, Yutong Liu

“…In addition, considering the atmospheric drag in low orbits and the constraint of satellite power and attitude control, a method is proposed by rotating solar panels to change the effective frontal area of the satellite to achieve relative configuration maintenance of the LEO constellation. The results show that the LEO navigation constellation has a 0 s revisit time in five chosen smart cities, and each city has more than four-times coverage every second; the Geographic Dilution of Precision (GDOP) values of five cities are smaller than 0.47. …”
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ANALYSIS OF THE GRAVITY MODELS IMPACT ON LEO SATELLITE ORBIT PREDICTION by Y. Zhuang, L. Wang

“…With the risen of the mega LEO constellation, new applications such as the LEO navigation requires real-time precise orbit, which increases the importance of the precise orbit prediction. …”
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