Open-Source Real-Time SDR Platform for Rapid Prototyping of LANS AFS Receiver

The Lunar Augmented Navigation Service (LANS) is the lunar equivalent of GNSS for future lunar explorations. It offers users accurate position, navigation, and timing (PNT) capabilities on and around the Moon. The Augmented Forward Signal (AFS) is a standardized signal structure for LANS, and its re...

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Main Authors: Rion Sobukawa, Takuji Ebinuma
Format: Article
Language:English
Published: MDPI AG 2025-07-01
Series:Aerospace
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Online Access:https://www.mdpi.com/2226-4310/12/7/620
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author Rion Sobukawa
Takuji Ebinuma
author_facet Rion Sobukawa
Takuji Ebinuma
author_sort Rion Sobukawa
collection DOAJ
description The Lunar Augmented Navigation Service (LANS) is the lunar equivalent of GNSS for future lunar explorations. It offers users accurate position, navigation, and timing (PNT) capabilities on and around the Moon. The Augmented Forward Signal (AFS) is a standardized signal structure for LANS, and its recommended standard was published online on 7 February 2025. This work presents software-defined radio (SDR) implementations of the LANS AFS simulator and receiver, which were rapidly developed within a month of the signal specification release. Based on open-source GNSS software, including GPS-SDR-SIM and Pocket SDR, our system provides a valuable platform for future algorithm research and hardware-in-the-loop testing. The receiver can operate on embedded platforms, such as the Raspberry Pi 5, in real-time. This feature makes it suitable for lunar surface applications, where conventional PC-based SDR systems are impractical due to their size, weight, and power requirements. Our approach demonstrates how open-source SDR frameworks can be rapidly applied to emerging satellite navigation signals, even for extraterrestrial PNT applications.
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spelling doaj-art-07ea91a5be34476da74d7fb7e4c347a12025-08-20T03:55:49ZengMDPI AGAerospace2226-43102025-07-0112762010.3390/aerospace12070620Open-Source Real-Time SDR Platform for Rapid Prototyping of LANS AFS ReceiverRion Sobukawa0Takuji Ebinuma1Department of Astronautics and Aeronautics, Chubu University, Kasugai 487-8501, Aichi, JapanDepartment of Astronautics and Aeronautics, Chubu University, Kasugai 487-8501, Aichi, JapanThe Lunar Augmented Navigation Service (LANS) is the lunar equivalent of GNSS for future lunar explorations. It offers users accurate position, navigation, and timing (PNT) capabilities on and around the Moon. The Augmented Forward Signal (AFS) is a standardized signal structure for LANS, and its recommended standard was published online on 7 February 2025. This work presents software-defined radio (SDR) implementations of the LANS AFS simulator and receiver, which were rapidly developed within a month of the signal specification release. Based on open-source GNSS software, including GPS-SDR-SIM and Pocket SDR, our system provides a valuable platform for future algorithm research and hardware-in-the-loop testing. The receiver can operate on embedded platforms, such as the Raspberry Pi 5, in real-time. This feature makes it suitable for lunar surface applications, where conventional PC-based SDR systems are impractical due to their size, weight, and power requirements. Our approach demonstrates how open-source SDR frameworks can be rapidly applied to emerging satellite navigation signals, even for extraterrestrial PNT applications.https://www.mdpi.com/2226-4310/12/7/620LunaNetLunar Augmented Navigation Service (LANS)Augmented Forward Signal (AFS)Software Defined Radio (SDR)
spellingShingle Rion Sobukawa
Takuji Ebinuma
Open-Source Real-Time SDR Platform for Rapid Prototyping of LANS AFS Receiver
Aerospace
LunaNet
Lunar Augmented Navigation Service (LANS)
Augmented Forward Signal (AFS)
Software Defined Radio (SDR)
title Open-Source Real-Time SDR Platform for Rapid Prototyping of LANS AFS Receiver
title_full Open-Source Real-Time SDR Platform for Rapid Prototyping of LANS AFS Receiver
title_fullStr Open-Source Real-Time SDR Platform for Rapid Prototyping of LANS AFS Receiver
title_full_unstemmed Open-Source Real-Time SDR Platform for Rapid Prototyping of LANS AFS Receiver
title_short Open-Source Real-Time SDR Platform for Rapid Prototyping of LANS AFS Receiver
title_sort open source real time sdr platform for rapid prototyping of lans afs receiver
topic LunaNet
Lunar Augmented Navigation Service (LANS)
Augmented Forward Signal (AFS)
Software Defined Radio (SDR)
url https://www.mdpi.com/2226-4310/12/7/620
work_keys_str_mv AT rionsobukawa opensourcerealtimesdrplatformforrapidprototypingoflansafsreceiver
AT takujiebinuma opensourcerealtimesdrplatformforrapidprototypingoflansafsreceiver