Browsing Radionavigation Laboratory by Title
Now showing items 1-8 of 8
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Characterization of Receiver Response to Spoofing Attacks
(2011-05)Test procedures are developed for characterizing the response of civil GPS receivers to spoofing attacks. Two response characteristics are analyzed in detail for four representative GPS receivers: (1) the aggressiveness ... -
Characterization of Receiver Response to Spoofing Attacks
(The Institute of Navigation, 2011-10)Test procedures are developed for characterizing the response of civil GPS receivers to spoofing attacks. Two response characteristics are analyzed in detail for four representative GPS receivers: (1) the spoofer power ... -
Constructing a Continuous Phase Time History from TDMA Signals for Opportunistic Navigation
(Constructing a Continuous Phase Time History from TDMA Signals for Opportunistic NavigationIEEE/ION PLANS Conference, 2012-04)A technique is developed for reconstructing a continuous phase time history from the noncontinuous phase bursts of time division multiple access (TDMA) signals. A continuous phase time history facilitates exploitation of ... -
Extending the Reach of GPS-assisted Femtocell Synchronization and Localization Through Tightly-Coupled Opportunistic Navigation
(IEEE, 2011-12)A strategy known as Tightly-Coupled Opportunistic Navigation (TCON) is proposed for extending the penetration of GPS-assisted femtocells in weak-signal indoor environments. Standards and regulatory agencies impose strict ... -
The GPS Assimilator: a Method for Upgrading Existing GPS User Equipment to Improve Accuracy, Robustness, and Resistance to Spoofing
(2010-09)A conceptual method is presented for upgrading existing GPS user equipment, without requiring hardware or software modifications to the equipment, to improve the equipment’s position, velocity, and time (PVT) accuracy, to ... -
Observability Analysis of Opportunistic Navigation with Pseudorange Measurements
(In Proceedings of AIAA Guidance, Navigation, and Control Conference (GNC’12), 2012-08)The observability analysis of an opportunistic navigation (OpNav) environment whose states may be partially known is considered. An OpNav environment can be thought of as a radio frequency signal landscape within which a ... -
Observability and Estimability of Collaborative Opportunistic Navigation with Pseudorange Measurements
(The Institute of Navigation, 2012-09)The observability and estimability of collaborative opportunistic navigation (COpNav) environments are studied. A COpNav environment can be thought of as a radio frequency signal landscape within which one or more radio ... -
Opportunistic Frequency Stability Transfer for Extending the Coherence Time of GNSS Receiver Clocks
(Institute of Navigation, 2010-09)A framework is presented for exploiting the frequency stability of non-GNSS signals to extend the coherence time of inexpensive GNSS receiver clocks. This is accomplished by leveraging stable ambient radio frequency ...
