Satellite Visibility Window Estimation Using Doppler Measurement for IoT Applications

Article Automation & Control Systems

Enabling mMTC in Remote Areas: LoRaWAN and LEO Satellite Integration for Offshore Wind Farm Monitoring

Muhammad Asad Ullah et al.

Summary: This study investigates the potential of using massive machine-type connectivity (mMTC) and satellite technologies for remote monitoring of offshore wind farms. Two alternative architectures, indirect and direct, are considered. Simulations are employed to assess the feasibility and packet delivery probability of implementing these approaches over LoRaWAN mMTC technology.

IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS (2022)

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Article Engineering, Aerospace

Sparse Satellite Constellation Design for Global and Regional Direct-to-Satellite IoT Services

Gabriel Maiolini Capez et al.

Summary: This article introduces and designs sparse constellations for direct-to-satellite Internet of Things (DtS-IoT), which significantly reduces the number of satellites needed by adjusting transmission delay and optimizing the positioning of orbiting gateways. The results show that sparse constellations provide worldwide IoT coverage with fewer satellites compared to traditional constellations. Region-specific coverage for Africa and Europe can be achieved with a small number of satellites.

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS (2022)

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Article Computer Science, Information Systems

Satellite Localization of IoT Devices Using Signal Strength and Doppler Measurements

Iza S. Mohamad Hashim et al.

Summary: This paper presents a framework for passively localizing ground wireless devices using signal strength and Doppler measurements. Two methods, simulated annealing and Markov Chain Monte Carlo (MCMC), are compared for estimating the device location and Equivalent Isotropic Radiated Power (EIRP). Simulation results show that reliable IoT device localization can be achieved using multiple satellites.

IEEE WIRELESS COMMUNICATIONS LETTERS (2022)

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Article Telecommunications

A Tractable Approach for Predicting Pass Duration in Dense Satellite Networks

Akram Al-Hourani

Summary: This research proposes a method to characterize the pass-duration of satellites using analytic tools, and compares different designed satellite constellations. The study finds a simple dependency between the average pass-duration and altitude, providing a useful approximation for practical constellation deployments.

IEEE COMMUNICATIONS LETTERS (2021)

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Proceedings Paper Computer Science, Artificial Intelligence