I am Not Afraid of the Jammer: Navigating with Signals of Opportunity in GPS-Denied Environments

Kassas, Zak M.; Khalife, Joe; Abdallah, Ali A.; Lee, Chiawei

doi:10.33012/2020.17737

Cited by 19 publications

(3 citation statements)

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“…MATRIX (Multichannel Adaptive TRansceiver Information eXtractor) is a state-of-the-art cognitive SDR, developed at Kassas' Autonomous Systems Perception, Intelligence, and Navigation (ASPIN) Laboratory, for navigation with terrestrial and space-based SOPs (Kassas et al, 2020). MATRIX continuously searches for opportune signals from which it draws navigation and timing information, employing signal characterization on the fly as necessary.…”

Section: The Matrix Sdr For Navigation With Sopsmentioning

confidence: 99%

GNSS Software-Defined Radio: History, Current Developments, and Standardization Efforts

Pany,

Akos,

Arribas

et al. 2024

navi

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Receiver development has always been an integral part of satellite navigation, ever since early studies were conducted for the U.S. Global Positioning System (GPS). The very first receivers were huge devices, enabling a correlation of received satellite signals with internally generated code and carrier replicas by a mixture of digital and analog electronics (Eissfeller & Won, 2017). Advances in semiconductor technology soon enabled signal processing on dedicated chips. This technology was complex to handle and was primarily located within the U.S. industry. Despite the success of GPS and its Russian counterpart globalnaya navigazionnaya sputnikovaya sistema (GLONASS), internal receiver technology was barely

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Section: The Matrix Sdr For Navigation With Sopsmentioning

confidence: 99%

GNSS Software-Defined Radio: History, Current Developments, and Standardization Efforts

Pany,

Akos,

Arribas

et al. 2024

navi

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show abstract

“…Therefore, they are ill suited for penetrating deep into buildings and are susceptible to even unintentionally generated radio frequency interference (RFI) [ 1 ]. To provide alternative and fallback navigation capability to users who must continue to navigate or synchronize their systems when GNSS signals are unavailable, a large body of research has been dedicated in recent years to the exploitation of Signals of Opportunity (SoP) including, but not limited to, television, cellular [ 2 , 3 , 4 , 5 , 6 , 7 , 8 ], low earth orbit (LEO) satellite [ 9 ], and other emitters of opportunity [ 10 ] that can be used as ersatz PNT observables. Cellular signals in particular stand out as excellent candidates for three very important reasons.…”

Section: Introductionmentioning

confidence: 99%

Analysis of 5G and LTE Signals for Opportunistic Navigation and Time Holdover

Winter,

Morrison,

Sokolova

2023

Sensors

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The purpose of this study was to evaluate the stability and therefore suitability of available fifth generation (5G) and long-term evolution (LTE) signals for positioning navigation and timing (PNT) purposes with particular focus on answering questions around the time-scale-dependent stability of these sources, which, to our knowledge, has not been addressed in the context of the numerous publications within the PNT community to date. The methodology used directly measured the over-the-air signal phase stability to one or more of the cellular signal sources that were visible from the lab environment simultaneously while using a local atomic clock or differential measurements to isolate the time stability of the observable cellular downlink signals. This approach was taken since it does not require subscription or association with the networks under test. Instead, it exploits a ‘signal of opportunity’ (SoP) approach to signal use for PNT purposes. The somewhat surprising result is that the time domain instability of the sources was highly variable, dependent on the implementation choices of the operator, and that the stability of even the modernized towers was generally best at interrogation intervals of approximately 0.01 s, which indicates that the existing exploitation of these signals within the PNT community has substantial room for improvement through simple changes to the selected update rate used.

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“…The majority of AGVs developed so far rely on global navigation satellite systems (GNSS), such as the Global Positioning System (GPS), to determine their absolute coordinates [6]. However, GNSS signals are susceptible to interference that can be caused by nature (e.g., ionospheric disturbances owing to solar activity [7][8][9]) or humans (e.g., jamming [10][11][12] and spoofing [13][14][15]). Especially in urban environments, the accuracy and availability of GNSS position solutions can be significantly degraded due to multipath and non-line-of-sight (NLOS) conditions caused by tall buildings.…”

mentioning

confidence: 99%

Integrity-Based Path Planning Strategy for Urban Autonomous Vehicular Navigation Using GPS and Cellular Signals

Lee,

Seo,

Kassas

2020

Preprint

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I am Not Afraid of the Jammer: Navigating with Signals of Opportunity in GPS-Denied Environments

Cited by 19 publications

References 0 publications

GNSS Software-Defined Radio: History, Current Developments, and Standardization Efforts

GNSS Software-Defined Radio: History, Current Developments, and Standardization Efforts

Analysis of 5G and LTE Signals for Opportunistic Navigation and Time Holdover

Integrity-Based Path Planning Strategy for Urban Autonomous Vehicular Navigation Using GPS and Cellular Signals

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