Results 1 to 10 of about 19,851 (292)
Moving Object Localization Using Sound-Based Positioning System with Doppler Shift Compensation
Robotics, 2013 Sound-based positioning systems are a potential alternative low-cost navigation system. Recently, we developed such an audible sound-based positioning system, based on a spread spectrum approach.
Slamet Widodo +7 more
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Antarctic Record, 1995 Ice flow has been observed along traverse routes from S16 to Dome Fuji, East Antarctica using the differential GPS (Global Positioning System) method since 1992. This positioning method is easier to use in the field than the satellite doppler positioning
Hideaki Motoyama +8 more
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Evaluation of Geometric and Atmospheric Doppler for GNSS-RO Payloads [PDF]
AUT Journal of Electrical Engineering, 2017 To reduce the sampling rate in global navigation satellite system (GNSS)-radio occultation receivers, it is essential to establish a suitable estimation of Doppler frequency from the received signal in the satellite onboard receiver.
L. Mohammadi +2 more
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Research on algorithm based on sliding-window integral Doppler smoothing pseudorange
Dianzi Jishu Yingyong, 2018 The navigation signals can be blocked, faded and interfered, when a satellite navigation receiver is carried by high dynamic vehicles and working in complex environments.
Yin Biao, Geng Shengqun, Zhao Yun
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A New Array Pseudolites Technology for High Precision Indoor Positioning
IEEE Access, 2019 Global Satellite Navigation System (GNSS) can't provide normal location service in the indoor environment because the signal can be blocked by buildings. The pseudolites system can supplement GNSS, especially in the indoor environments.
Xingli Gan +8 more
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KDFE: Robust KNN-Driven Fusion Estimator for LEO-SoOP Under Multi-Beam Phased-Array Dynamics
Remote SensingAccurate Doppler frequency estimation for Low Earth Orbit (LEO)-based Signals of Opportunity (SoOP) positioning faces significant challenges from extreme dynamics (±40 kHz Doppler shift, 0.4 Hz/ms fluctuation) and severe SNR fluctuations induced by multi-
Jiaqi Yin +5 more
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Revisit the performance of Doppler positioning with LEO satellites
, 2022 Abstract Recently, the Doppler shifts from Low Earth Orbit (LEO) satellites have been used to augment GNSS and provide standalone positioning, navigation and timing services in opportunistic navigation frameworks or GNSS-like navigation systems.
Chuang Shi, Yulu Zhang, Zhen Li
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NavigationThis paper provides a comprehensive theoretical and experimental description of how to exploit Starlink low Earth orbit (LEO) satellites for positioning, navigation, and timing (PNT).
Sharbel Kozhaya +2 more
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Four State Filter with Position Measurements and also with Position and Doppler Measurements
International Journal of Computer Applications, 2013 A one-dimensional, four state Kalman tracking filter is described for two cases: In case 1, the filter is described for position measurements only and in case 2, the filter is described for both position and Doppler measurements. The filter estimates the range, the range-rate, the rangeacceleration and the range-jerk of a moving target such as an ...
J. Fazlur Rahman, B. R.Geetha
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Accurate Positioning with Stereo SAR Images and One Ground Control Point
Leida xuebao, 2014 Geometrical imaging models and calculations of orientation parameters are the main factors affecting the positioning of stereo Synthetic Aperture Radar (SAR) images.
Zhang Hong-min +3 more
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