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In this paper we present a prototype of NAV/COM devices for Emergency Situations based on the Software Defined Radio (SDR) technology. More specifically this integrated terminal will be composed of two modules, the Localization and Communication Components, running on the same machine and connected each other via TCP/IP protocol. Both of them, then, will be(More)
Due to the large amount of different new applications based on GNSS systems, the issue of interference monitoring is becoming an increasing concern in the satellite navigation community. Threats for GNSS can be classified as unintentional interference, jamming and spoofing. Among them, spoofing is more deceitful because the target receiver might not be able(More)
Services based on Global Navigation Satellite Systems (GNSS) are currently in use in many critical networked infrastructures and crucial applications. Within the described scenario, the importance for the GNSS community of investigating the effects of spoofing attacks, together with anti-spoofing techniques, appears essential. This paper describes the(More)
Interference is an actual problem for Global Navigation Satellite System (GNSS) receivers. Despite a wide amount of research works available in literature, the growing risk represented by portable jamming devices indicates that interfering signals are still a concern for GNSS-based services. The design of simple detection methods, possibly applicable to all(More)
“Peers-based aiding GNSS” [1] refers to collaborative systems composed by GNSS receivers that exchange aiding data in order to improve their performance. One of the main issues related to this type of systems is the time synchronization between receivers. The required precision of the synchronization depends on the type of data the receivers(More)
The first step of the digital processing within a Global Navigation Satellite System (GNSS) receiver is the signal acquisition. The receiver has to detect the satellites in view, and for each of them, has to estimate the Doppler shift and the code phase of the received signal. In order to speed up the acquisition process, modern receivers use fast(More)
The high level of flexibility achievable with software defined radio (SDR) technology generates interest in the industry of mass market receivers, but represents also a valuable tool for research-oriented analysis. This paper exploits this last aspect and demonstrates how it is possible to assess the performance of different digital estimators of(More)
N-Gene is a GNSS receiver completely designed in software, able to run in real-time on a common Personal Computer. This kind of receiver implements the concept of Software Defined Radio (SDR) and can be used as a test-bed for the development of innovative algorithms and for their validation in a real-time environment. This paper presents the solutions(More)
Global Navigation Satellite Systems (GNSS) broadcast signals for positioning and navigation, which can be also employed for remote sensing applications. Indeed, the satellites of any GNSS can be seen as synchronized sources of electromagnetic radiation, and specific processing of the signals reflected back from the ground can be used to estimate the(More)