Air-to-Air Channel Characterization for UAV Communications at 3.4 GHz
arXiv:2604.01582v1 Announce Type: new Abstract: Uncrewed Aerial Vehicle (UAV) networks require accurate Air-to-Air (A2A) channel models, but most existing work focuses on Air-to-Ground links and leaves the sub-6 GHz A2A channel poorly characterized. We present preliminary 3.4 GHz A2A channel measurements collected with a lightweight, reconfigurable, open-source channel sounder built from USRP B210 software-defined radios and a high-precision GNSS-disciplined oscillator mounted on two UAVs. Measurements were conducted at the AERPAW Lake Wheeler testbed using a spherical flight trajectory around a second drone to capture channel behavior over varying altitudes, elevation angles, and relative headings. From these data, we analyze fundamental channel properties, extract channel impulse respons
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Abstract:Uncrewed Aerial Vehicle (UAV) networks require accurate Air-to-Air (A2A) channel models, but most existing work focuses on Air-to-Ground links and leaves the sub-6 GHz A2A channel poorly characterized. We present preliminary 3.4 GHz A2A channel measurements collected with a lightweight, reconfigurable, open-source channel sounder built from USRP B210 software-defined radios and a high-precision GNSS-disciplined oscillator mounted on two UAVs. Measurements were conducted at the AERPAW Lake Wheeler testbed using a spherical flight trajectory around a second drone to capture channel behavior over varying altitudes, elevation angles, and relative headings. From these data, we analyze fundamental channel properties, extract channel impulse responses, model fading behavior as a function of link geometry, and characterize fading statistics including RMS delay spread. The resulting dataset and analysis provide a more realistic basis for the design, emulation, and evaluation of physical-layer and MAC protocols for next-generation UAV communication networks.
Comments: Accepted for publication at Aeroconf 2026
Subjects:
Signal Processing (eess.SP); Networking and Internet Architecture (cs.NI)
Cite as: arXiv:2604.01582 [eess.SP]
(or arXiv:2604.01582v1 [eess.SP] for this version)
https://doi.org/10.48550/arXiv.2604.01582
arXiv-issued DOI via DataCite (pending registration)
Submission history
From: Anıl Gürses [view email] [v1] Thu, 2 Apr 2026 03:49:56 UTC (5,227 KB)
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