Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"GPS simulator"”.
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Investigation of Nonlinear Control Strategies Using GPS Simulator And Spacecraft Attitude Control Simulator
… Distributed Spacecraft Attitude Control System Simulator (DSACSS) testbed developed at Virginia Polytechnic Institute and State University for the purpose of investigating various control techniques for single and multiple spacecraft. DSACSS is comprised of two independent hardware-in-the-loop …
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Development and Testing of A Space-borne GPS Signal Strength Sensor
The Global Positioning System (GPS) satellite signals provide not only traditional radionavigation service but inexpensive and convenient radio beacons for signal propagation studies on ionosphere and atmosphere. This thesis describes the development and testing of a specialized GPS sensor which …
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Real time hardware in the loop simulation testbed of spacecraft formation flying
… system, guidance and control algorithm, and GPS simulator. Different SFF models already developed by researchers have been studied for their potential use in a real time test bed. Due to the limitations associated with them a novel real time SFF model and algorithm has been developed for real …
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A Multi-Constellation Multi-Frequency GNSS Software Receiver Design for Ionosphere Scintillation Studies
… results of scintillation effects on the new GPS L5 signal based on data collected using a real-time scintillation monitoring and data collection system at HAARP, Alaska. The data collection setup includes a custom narrow band front end that collects GPS L1, L2 IF samples and two …
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A software defined GPS signal simulator design
The Global Positioning System (GPS) signal simulator plays a critical role in developing and testing GPS receivers. Unfortunately, very few commercial GPS signal simulators are user-friendly for security researchers because they fail to generate abnormal GPS signals, which are fundamentally …
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Signal Acquisition and Tracking for a Software Gps Receiver
Global Positioning System (GPS) is a satellite-based navigation system that has been used widely both in civilian and military for positioning, navigation, timing and other position related applications. The hardware-based GPS receivers provide the least user flexibility. Thus, it is necessary to …