Comparison between multimode-monopulse and step-tracking techniques for a UAV satellite terminal

Lee, Jaemoon; Lim, Jaesung; Kim, Eunki

doi:10.1109/wts.2016.7482031

Cited by 7 publications

(2 citation statements)

References 4 publications

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“…In the future, the space-air-ground integrated network [34] is expected to become aerial networks which relay the increasing traffic demands of various services among space, air and ground. Extensions to an air-to-space link or an air-to-air link with multiple UAVs are worth pursuing [35], [36]. Also, electrically steering antennas based AG communication systems could be an important research direction.…”

Section: Discussionmentioning

confidence: 99%

Antenna Tracking Techniques for Long Range Air-to-Ground Communication Systems Using a Monopulse Method

Kim

Lee

2020

IEEE Access

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In this paper, we consider long range air-to-ground (AG) communication systems which support airborne platforms including unmanned aerial vehicles (UAVs) for real-time applications. In this system, we design tracking techniques for directional ground antennas which enable reliable AG communication regardless of dynamic maneuvers of the UAV. We apply a simple monopulse method and a fixed gain filtering algorithm to develop a single channel monopulse tracking system with an angular estimation filtering, which exploits a downlink signal without requiring a dedicated channel. Through the AG communication prototype and realistic flight tests, we evaluate the tracking accuracy performance at the distance of hundreds of kilometers and demonstrate the auto-tracking capability of the angular estimation filter. The flight test results show that the tracking accuracy of our proposed system is sufficient for long range transmission with a narrow beam antenna. Also, in the absence of the downlink signal, it is observed that the ground prototype can resume the monopulse tracking procedure, and successfully maintains the tracking accuracy.INDEX TERMS Air-to-ground communication systems, antenna tracking, estimation filter, monopulse

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Section: Discussionmentioning

confidence: 99%

Antenna Tracking Techniques for Long Range Air-to-Ground Communication Systems Using a Monopulse Method

Kim

Lee

2020

IEEE Access

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“…However, increasing the number of satellites and the spot beams result in a higher number of satellite handovers [355]. In this case, we can employ beam tracking technologies to reduce the handover rates, such as the blind method [299], step-tracking [300] as well as multi-mode-monopulse methods [300]. Similarly, the authors of [301] develop an antenna tracking system for UAVs on the Ka-band, and the authors of [302] investigate an algorithm for recursive 3D channel tracking for the UAV-LEO connectivity.…”

Section: B Satellite Networkmentioning

confidence: 99%

A Survey of Wireless Networks for Future Aerial COMmunications (FACOM)

Baltaci,

Dinc,

Ozger

et al. 2021

Preprint

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Electrification turned over a new leaf in aviation by introducing new types of aerial vehicles along with new means of transportation. Addressing a plethora of use cases, drones are gaining attention in the industry and increasingly appear in the sky. Emerging concepts of flying taxi enable passengers to be transported over several tens of kilometers. Therefore, unmanned traffic management systems are under development to cope with the complexity of future airspace, thereby resulting in unprecedented communication needs. Moreover, the long-term increase in the number of commercial airplanes pushes the limits of voice-oriented communications, and future options such as single-pilot operations demand robust connectivity. In this survey, we provide a comprehensive review and vision for enabling the connectivity applications of aerial vehicles utilizing current and future communication technologies. We begin by categorizing the connectivity use cases per aerial vehicle and analyzing their connectivity requirements. By reviewing more than 500 related studies, we aim for a comprehensive approach to cover wireless communication technologies, and provide an overview of recent findings from the literature toward the possibilities and challenges of employing the wireless communication standards. After analyzing the proposed network architectures, we list the open-source testbed platforms to facilitate future investigations by researchers. This study helped us observe that while numerous works focused on cellular technologies to enable connectivity for aerial platforms, a single wireless technology is not sufficient to meet the stringent connectivity demands of the aerial use cases, especially for the piloting operations. We identified the need of further investigations on multi-technology heterogeneous network architectures to enable robust and real-time connectivity in the sky. Future works should consider suitable technology combinations to develop unified aerial networks that can meet the diverse quality of service demands of the aerial use cases.

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Novel Algorithm for Tracking LEO Satellites Using Doppler Frequency Shift Technique

Rouzegar

Nasirian

Ghanbarisabagh

2017

Wireless Pers Commun

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Comparison between multimode-monopulse and step-tracking techniques for a UAV satellite terminal

Cited by 7 publications

References 4 publications

Antenna Tracking Techniques for Long Range Air-to-Ground Communication Systems Using a Monopulse Method

Antenna Tracking Techniques for Long Range Air-to-Ground Communication Systems Using a Monopulse Method

A Survey of Wireless Networks for Future Aerial COMmunications (FACOM)

Novel Algorithm for Tracking LEO Satellites Using Doppler Frequency Shift Technique

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