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Article

An Open-Loop Receiver Architecture for Monitoring of Ionospheric Scintillations by Means of GNSS Signals

by 1,2,‡ and 1,*,†,‡
1
Department of Electronics and Telecommunications, Politecnico di Torino, 10129 Torino, Italy
2
Finnish Geospatial Research Institute (FGI), National Land Survey, 02430 Kirkkonummi, Finland
*
Author to whom correspondence should be addressed.
Current address: Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
These authors contributed equally to this work.
Appl. Sci. 2019, 9(12), 2482; https://doi.org/10.3390/app9122482
Received: 10 May 2019 / Revised: 11 June 2019 / Accepted: 15 June 2019 / Published: 18 June 2019
(This article belongs to the Special Issue Signal Processing for Satellite Positioning Systems)
The quality of positioning services based on Global Navigation Satellite Systems (GNSS) is improving at a fast pace, driven by the strict requirements of a plethora of new applications on accuracy, precision and reliability of the services. Nevertheless, ionospheric errors still bound the achievable performance and better mitigation techniques must be devised. In particular, the harmful effect due to non-uniform distribution of the electron density that causes amplitude and phase variation of the GNSS signal, usually named as scintillation effects. For many high-accuracy applications, this is a threat to accuracy and reliability, and the presence of scintillation effect needs to be constantly monitored. To this purpose, traditional receivers employ closed-loop tracking architectures. In this paper, we investigate an alternative architecture and a related metric based on the statistical processing of the received signal, after a code-wipe off and a noise reduction phase. The new metric is based on the analysis of the statistical features of the conditioned signal, and it brings the same information of the S 4 index, normally estimated by means of closed-loop receivers. This new metric can be obtained at a higher rate as well as in the case of strong scintillations when a closed-loop receiver would fail the tracking of the GNSS signals. View Full-Text
Keywords: GNSS; ionospheric scintillations; open loop GNSS; ionospheric scintillations; open loop
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MDPI and ACS Style

Linty, N.; Dovis, F. An Open-Loop Receiver Architecture for Monitoring of Ionospheric Scintillations by Means of GNSS Signals. Appl. Sci. 2019, 9, 2482. https://doi.org/10.3390/app9122482

AMA Style

Linty N, Dovis F. An Open-Loop Receiver Architecture for Monitoring of Ionospheric Scintillations by Means of GNSS Signals. Applied Sciences. 2019; 9(12):2482. https://doi.org/10.3390/app9122482

Chicago/Turabian Style

Linty, Nicola, and Fabio Dovis. 2019. "An Open-Loop Receiver Architecture for Monitoring of Ionospheric Scintillations by Means of GNSS Signals" Applied Sciences 9, no. 12: 2482. https://doi.org/10.3390/app9122482

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