Machine-Learning-Based Cellular Drone Detection Capability
Talk on Cellular Drone Detection
99 - GENERAL AND MISCELLANEOUS↗
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White Paper: Drone Detection with Radar
INL recently summarized how Ukraine conducted an unprecedented drone attack on Russian air bases on Sunday, June 1, 2025 using Russian cellular networks to operate the drones. It also showed how a drone with a cellular connection can be detected using network signatures. This report adds an additional section, section 2, on detecting drones with radar if they are not connected to a cellular network and hence network signatures are not available.
42 ENGINEERING↗
Cellular Based Small Unmanned Aircraft Systems MIMO Communications
The use of remotely piloted unmanned aircraft systems/vehicles (UAS/UAV or drones) increases dramatically in recent years. This paper discusses the use of multiple-input and multiple-output (MIMO) technologies in cellular (i.e., LTE) based small UAS (sUAS) communications. More specifically, we will first provide background information about this work, followed by a review of state-of-the-art. Then, we will discuss the benefits of MIMO technologies and propose practical MIMO configurations (e.g., the type, size and number of antennas) that are suitable for NASA's sUAS research and operations. Finally, the design tradeoff among multiplexing, diversity, and interference/jamming cancellation will also be discussed.
Li, Hongxiang↗
Cellular Based Small Unmanned Aircraft Systems (sUAS) MIMO Communications
The use of remotely piloted unmanned aircraft systems/vehicles (UAS/UAV or drones) increases dramatically in recent years. This paper discusses the use of multiple-input and multiple-output (MIMO) technologies in cellular (i.e., LTE) based small UAS (sUAS) communications. More specifically, we will first provide background information about this work, followed by a review of state-of-the-art. Then, we will discuss the benefits of MIMO technologies and propose practical MIMO configurations (e.g., the type, size and number of antennas) that are suitable for NASA's sUAS research and operations. Finally, the design tradeoff among multiplexing, diversity, and interference/jamming cancellation will also be discussed.
Li, Hongxiang↗
Advanced Unmanned Aerial Vehicles for Improved Communications
Reestablishing communication channels is one of the most important yet time-consuming procedures to carry out following a natural disaster. After Hurricane Katrina impacted Louisiana in 2005, more than 60% of networks were still down 3 weeks after the event.1 In 2017, when Hurricane María devastated Puerto Rico, 95% of cellular sites failed island-wide, leaving many civilians disconnected for months.2 One viable approach to this challenge is increasing the capabilities of Unmanned Aerial Vehicles (UAVs), commonly known as drones, which could provide sustained communication outlets in hard-to-access areas while emergency response efforts are underway.
Light, Bailey G.↗
Analysis of At-Altitude LTE Power Spectra for C2 Communications for UAS Traffic Management
The National Aeronautics and Space Administration’s (NASA) Unmanned Aircraft Systems Traffic Management (UTM) project works to develop tools and technologies essential for safely enabling civilian low-altitude small Unmanned Aerial Systems (sUAS, also known as drones) operations. This paper presents results of work completed in the paper [1] presented at the 2018 ICNS conference where proposed approaches were explored for evaluating and analyzing sUAS Command and Control (C2) links based on commercial cellular networks. This paper focuses on the UTM Project’s Technology Capability Level 3 (TCL-3) test results which address the communications portion identified within the same paper. A software defined radio (SDR) was flown as a sUAS payload to capture received signal spectrum in Long Term Evolution (LTE) frequency bands of interest. The purpose was to measure the RF environment at UTM altitudes to characterize the interference potential. The SDR payload was flown at various stationary altitudes where the LTE over-the-air complex (I/Q) samples were captured by the SDR and later post-processed. The SDR received inputs through an omnidirectional antenna. The complex samples captured were an aggregate of transmissions received from all line-of-sight (LOS) towers within the geographic area for the specific radio frequency bandwidth the SDR is programmed to capture. Using this approach, the complex samples captured do not distinguish between the various eNodeB's (Long Term Evolution (LTE) transmitting towers). The complex samples were post processed via a Discrete Fourier Transform (DFT) algorithm to view the captured spectrum along with the power levels across the captured LTE bandwidth. This SDR payload process of capturing complex samples was done at two different regions within the US: 1) NASA's Ames Research Center (ARC) in Moffett Field, CA, and 2) Griffiss Airfield in Rome, NY. The data capture at the ARC site was done at two physical locations within the Ames campus where many stationary altitude captures where done as high as 800 ft. above ground level (AGL). The data captured at the Griffiss Airport (also known as the NY Corridor Site) were acquired at one location with three specific stationary altitude levels – {Ground Level (GL), 300 ft., and 400 ft.}. The LTE spectrum power levels were captured for two LTE carriers, AT&T and Verizon, at both sites where their respective spectra and power levels were measured and compared at various altitudes. The overall results show that there is an increase in LTE spectrum power levels at higher altitudes for drones. A detailed analysis of this data and conclusions drawn from the results are presented in this paper.
Kerczewski, Robert J.↗