Browsing Radionavigation Laboratory by Title
Now showing items 1-20 of 102
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Adaptive Estimation of Signals of Opportunity
(2014-04)To exploit unknown ambient radio frequency signals of opportunity (SOPs) for positioning and navigation, one must estimate their states along with a set of parameters that characterize the stability of their oscillators. ... -
Advances in GNSS Equipment
(2010) -
Analysis of Ionospheric Scintillations using Wideband GPS L1 C/A Signal Data
(2004)A non-real-time GPS receiver has been developed and tested for use in scintillation analysis. The receiver consists of a digital storage receiver and non-real-time software acquisition and tracking algorithms. The goal ... -
Assessing the Spoofing Threat: Development of a Portable GPS Civilian Spoofer
(2008)A portable civilian GPS spoofer is implemented on a digital signal processor and used to characterize spoofing effects and develop defenses against civilian spoofing. This work is intended to equip GNSS users and receiver ... -
Assured Navigation and Timing
(2017-09-28) -
A Blueprint for Civil GPS Navigation Message Authentication
(2014-05)A proposal for civil GPS navigation message authentication (NMA) is presented with sufficient specificity to enable near-term implementation. Although previous work established the practicality and efficacy of NMA for ... -
CASES: A Novel Low-Cost Ground-based DualFrequency GPS Software Receiver and Space Weather Monitor
(2011)GPS receivers can be used for monitoring space weather events such as TEC variations and scintillation. This paper describes the new GPS sensor developed by ASTRA, Cornell and UT Austin. The receiver is called “Connected ... -
CASES: A Smart, Compact GPS Software Receiver for Space Weather Monitoring
(2011)A real-time software-defined GPS receiver for the L1 C/A and L2C codes has been developed as a low-cost space weather instrument for monitoring ionospheric scintillation and total electron content. The so-called CASES ... -
Centimeter Positioning with a Smartphone-Quality GNSS Antenna
(2014-09)This paper demonstrates for the first time that centimeteraccurate positioning is possible based on data sampled from a smartphone-quality Global Navigation Satellite System (GNSS) antenna. Centimeter-accurate ... -
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 ... -
Characterization of Receiver Response to Spoofing Attacks
(2011)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 ... -
Civilian GPS Spoofing Detection based on DualReceiver Correlation of Military Signals
(2011)Cross-correlations of unknown encrypted signals between two civilian GNSS receivers are used to detect spoofing of known open-source signals. This type of detection algorithm is the strongest known defense against so ... -
Considerations for Future IGS Receivers
(2008)Future IGS receivers are considered against the backdrop of GNSS signal modernization and the IGS’s goal of further improving the accuracy of its products. The purpose of this paper is to provide IGS members with a guide ... -
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 ... -
Constructing a Continuous Phase Time History from TDMA Signals for Opportunistic Navigation
(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 ...
