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 20 of 1530 for “"GPS"”.
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GPS ephemeris spoofing
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-20 without embargo terms
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Problems in GPS Accuracy
… derived from the global positioning system (GPS) continues to be a problem of great interest. Dependable and accurate positioning is especially important for navigation applications such as the landing of commercial aircraft. This subject gives rise to many interesting and challenging …
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Error modeling for differential GPS
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1995.
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GPS Imaging of Vertical Land Motion and Earthquake Coseismic Displacements in the GPS Mega-Network
… Laboratory's (NGL) Global Positioning Systems (GPS) worldwide data holdings number nearly 21,000 GPS stations that comprise the GPS Mega-Network today. Advances in data processing software, final orbit and clock products, atmospheric modeling, and reference frames have improved the precision and …
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GPS alapú logisztikai adatrögzítő rendszer fejlesztése
Munkám során egy összetett, több technológiát ötvöző rendszert sikerült elkészítenem. Ennek során sikerült megvalósítanom, hogy a központtól távol dolgozó kollégák információt juttassanak el a központban dolgozó munkatársak részére. Ezen információk értékelésével lehetőség nyílik olyan döntések …
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GPS analysis of elite level hockey
… the suitability of Global Positioning System (GPS) to assess activity profiles in elite hockey. Study one established validity and reliability of GPS units (1 and 5 Hz) to assess distance during movement’s common to team sport. Measurement accuracy decreased as speed increased in both straight …
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Adaptive Interference Mitigation in GPS Receivers
… hop-frequency and chirp-type interferences from GPS L1 signals. To mitigate unwanted interference, state-of-the-art ANFs typically adjust a single parameter, the notch centre frequency, and zeros are constrained extremely close to unity. Because of this, the notch centre frequency converges …
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GPS augmentation using digital spatial data
… methods and techniques which are used to augment GPS using a variety of digital spatial data. It is well known that the use of GPS can be severely compromised by various error sources such as signal obstructions, multipath and poor satellite geometry etc., especially in highly built-up areas. In …
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A persuasive GPS-controlled thermostat system
… based on travel distance computation from GPS-enabled mobile phones. Analyzing GPS travel data from eight participants (8-12 weeks each) and heating and cooling characteristics from 4 homes, we report results of running computer simulations estimating potential energy savings of a system …
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Elevation Effects on GPS Positional Accuracy
… Coarse Acquisition (C/A) Global Positing System (GPS) map-grade receiver were evaluated to assess the accuracy of differentially corrected points. Many studies have focused on the accuracy of GPS units under ideal data collection conditions. Ideal conditions allow the collection of data with four …
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Improving Helicopter Yarding with Onboard GPS
… to record additional information. Onboard GPS can reduce or eliminate the need for additional personnel and/or operator input providing a rapid means of assessing and improving helicopter operations. This research employed onboard GPS in helicopter yarding to assess the potential of …
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Samfelldar GPS landmælingar í kringum Eyjafjallajökul 2010
… mikil áhrif á afmyndun jarðskorpunnar þar sem að GPS-stöðvar í 17 til 100 km fjarlægð hreyfðust allar í átt að jöklinum yfir óróatímabil eldstöðvarinnar. Mesta færslan í átt að jökli var um 25 mm og sú minnsta um 2 mm. Mesta færslan þvert á stefnuna að jöklinum var um 2 mm svo að áhrif eldgossins …
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CALIFORNIA STATE UNIVERSITY SAN BERNARDINO WiN GPS
… most of the facilities on campus. There are many GPS applications on the market, however I chose to design and implement WiN GPS, short for Walking GPS, because it will allow the possibility of a personalized GPS for the school and for users should they choose to use it.</p> <p>In order to develop …
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Conformal Microstrip GPS Antenna for Missile Application
… coordinate data. The Global Positioning System (GPS) is used for this positional awareness. However, due to missile rotation and orientation variations during flight, GPS signal reception using traditional antennas may be intermittent. To remain cost competitive, Stellar Exploration Inc. is …
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Weak GPS Signal Acquisition Using Antenna Diversity
… compared with Monte Carlo simulations and real GPS data results. Compared to a single antenna, smoother signal-to-noise ratio (SNR) values which show the fading mitigation were observed by applying diversity combining. Experimental results demonstrate the improvement of detection probability, …
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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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Low Profile Integrated GPS and Cellular Antenna
… or multiple independent bands. The civilian GPS system is quickly becoming the standard for personal and commercial navigation and position location. The difficulty with GPS is that there is no return link. That is, a GPS terminal determines its position, but that position is known only to …
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Machine Learning-based GPS Jamming and Spoofing Detection
… reliance on Global Positioning System (GPS) technology across various sectors has exposed vulnerabilities to malicious attacks, particularly GPS jamming and spoofing. This thesis presents an analysis into detection and mitigation strategies for enhancing the resilience of GPS receivers …
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Partially Supervised Reinforcement Learning for GPS-Denied Navigation
… task where a drone at one time has access to GPS location information, which it has now lost and needs to navigate in the same area but at a future time with no GPS signal and differing transition dynamics. To address this, we introduce a novel simulator and algorithm for navigation that …
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