GPS Signal
Relationship of Soil Moisture and Reflected GPS Signal Strength
... (GPS) signal reflected from the sur- face of Earth, which estimates the dielectric properties of soil and can be used to estimate soil moisture ...utilizing GPS-based technology developed by NASA for ...
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Weak GPS Signal Acquisition Algorithm Based on Chaotic Oscillator
... GPS signal indoors become extremely weak because of fading, refraction, reflection, and multipath interference ...line-of-sight GPS signal is at 44 dBHz [2], while signal strength will ...
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Adaptive Antenna Array Approach in the Processing of Weakest GPS Signal in Satellite Communication Applications
... normal GPS signal there is no problem and it is not a big ...weakest GPS signal there is a occurrence of problem called Multipath and ...weakest GPS signal. Due to some ...
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The influence of the vehicle body front window angle at the reception of GPS signal located on dashboard
... by GPS and the accuracy of the positions strongly depend on the nature of the ...suitable signal structure. In consequence the GPS signal is quite complex and offers the possibility of ...
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Fast Acquisition Method of GPS Signal Based on FFT Cyclic Correlation
... Using GPS system for positioning and navigation, we need to capture the GPS signal at ...the GPS receiver, the local generated carrier and spread spec- trum code need to synchronize with the ...
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A New Technique Based on Grey Model for Forecasting of Ionospheric GPS Signal Delay Using GAGAN Data
... ionospheric GPS signal delay which is a function of TEC plays a major role in the estimation positional accuracy of satellite based navigation systems and detrimental to position estimation, especially in ...
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Open-loop GPS signal tracking at low elevation angles from a ground-based observation site
... ground-based GPS signal ob- servations aiming at geometric elevation angles below + 2 ◦ is ...open-loop signal tracking down to geometric elevation an- gles of − 1 to − ...strong ...
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Evaluating Reflected GPS Signal as a Potential Tool for Cotton Irrigation Scheduling
... as GPS signals) has been used for measuring large area soil moisture ...a GPS Delay Mapping Receiver (DMR) developed by ...Carolina. GPS an- tennas were mounted at three heights ...reflected ...
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Climatology of GPS signal loss observed by Swarm satellites
... eight GPS satellites has been increased to ...eight GPS satellite tracked increases to ...eight GPS satellites are somehow slightly reduced (by about 5 %) for both of ...with GPS ...
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Determining the scintillation effect of GPS signal over the WARAS Research Centre UTHM
... community, GPS plays an important role in the Earth ...of GPS applications and usage. In this project, GPS being used to analyze the scintillation of GPS signals at the Wireless and Radio ...
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Study the Effect of Surrounding Surface Material Types on the Multipath of GPS Signal and Its Impact on the Accuracy of Positioning Determination
... . It is observed that aluminium causes the highest amount of the multipath, resulting in the highest probable errors. This is followed by glass, ceramic, PVC and wood. The panels’ dimensions were (1×1 m). They mentioned ...
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Reducing Multipath Effects in Indoor Channel for Analysis of GPS/Pseudolite Signal Acquisition
... The GPS (Global Positioning System) is a mature technique in the navigation and ...the GPS use indoors are the low signal power, and the presence of multi-paths, which may affect the signal ...
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CO-GPS: Energy Economical GPS tracking with IoT
... the GPS Ephemeris data, which contains the time and satellite trajectory information, are sent by the satellites at a very low data rate of 50 ...standalone GPS receiver needs to be turned on for up to 30 ...
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Analysis and Mitigation of Tropospheric Error Effect on GPS Positioning Using Real GPS Data
... the GPS (Global Positioning Systems) has revolutionized navigation and position location for more than a decade ...However GPS signal suffers from inherent imprecision due to a variety of error ...
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GPS and the Search for Axions
... GPS, an excellent tool for geodesy, may serve also particle physics. In the presence of Earth’s magnetic field, a GPS photon may be transformed into an axion. The proposed experimental setup involves the ...
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Microcontroller Differential GPS to Subtract Signal Delay Due to Ambient Free Electrons in the Ionosphere
... for GPS location error is due to differing propagation delay times in the signal between the satellites and the receiver on the ground due to the ...the GPS signal through the ...
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Retrieving Evaporation Duct Heights from Power of Ground-Based GPS Occultation Signal
... In this section, two examples of the GPS signal power strength near the Earth surface in maritime evaporation duct environments are presented. The power strength contour for a normal refractive environment ...
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GPS Receivers and Integration of GPS/GIS Technology
... into GPS very abstractly, as if the whole thing were happening in a ...a GPS signal that will make its life less than mathematically ...good GPS receiver needs to take a wide variety of ...
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Factors Affecting Performance of GPS Receiver and Solutions for Sustainable Signal
... of GPS users across the world are dependent on the signals sent by GNSS network in the sky to achieve certain tasks that include determining their location, navigation, tracking something or someone, mapping areas ...
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GA SVR and pseudo position aided GPS/INS integration during GPS outage
... when GPS measurements are unavailable(Wang et ...during GPS outages(Semeniuk and Noureldin, ...during GPS signal outages(Abdel-Hamid et al., 2007). GPS/INS navigation solutions were ...
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