Results 11 to 20 of about 1,019,523 (294)
Indoor Carrier Phase Positioning Technology Based on OFDM System [PDF]
Sensors, 2021 Carrier phase measurement is a ranging technique that uses the receiver to determine the phase difference between the received signal and the transmitted signal. Carrier phase ranging has a high resolution; thus, it is an important research direction for
Zhenyu Zhang, Shaoli Kang, Xiang Zhang
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Time-Differenced Carrier Phase Technique for Precise Velocity Estimation on an Android Smartphone [PDF]
Sensors, 2022 GNSS (Global Navigation Satellite System) receivers are not only able to accurately determine position, but also velocity, knowledge of which could be important in several applications.
Antonio Angrisano +3 more
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Characteristics of the BDS Carrier Phase Multipath and Its Mitigation Methods in Relative Positioning [PDF]
Sensors, 2017 The carrier phase multipath effect is one of the most significant error sources in the precise positioning of BeiDou Navigation Satellite System (BDS).
Wujiao Dai, Qiang Shi, Changsheng Cai
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Wheat height monitoring from GPS/BDS reflected signals using pseudorange and dual-frequency carrier phase observables [PDF]
Frontiers in Plant ScienceIntroductionGround-based Global Navigation Satellite System Reflectometry (GNSS-R) has recently emerged as a low-cost, continuous, and high-resolution technique for monitoring crop growth.
Mingming Sui +3 more
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A Dual Frequency Carrier Phase Error Difference Checking Algorithm for the GNSS Compass [PDF]
Sensors, 2016 The performance of the Global Navigation Satellite System (GNSS) compass is related to the quality of carrier phase measurement. How to process the carrier phase error properly is important to improve the GNSS compass accuracy. In this work, we propose a
Shuo Liu, Lei Zhang, Jian Li
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Improvement of GNSS Carrier Phase Accuracy Using MEMS Accelerometer-Aided Phase-Locked Loops for Earthquake Monitoring [PDF]
Micromachines, 2017 When strong earthquake occurs, global navigation satellite systems (GNSS) measurement errors increase significantly. Combined strategies of GNSS/accelerometer data can estimate better precision in displacement, but are of no help to carrier phase ...
Tisheng Zhang +4 more
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Geo-spatial Information Science, 2023 Indoor positioning with high accuracy plays an important role in different application scenarios. As a widely used mobile communication signal, the Long-Term Evolution (LTE) network can be well received in indoor and outdoor environments.
Zhaoliang Liu +4 more
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Precise Orbit Determination of LEO Satellite Using Dual-Frequency GPS Data [PDF]
Journal of Astronomy and Space Sciences, 2009 KOrea Multi-purpose SATellite (KOMPSAT)-5 will be launched at 550km altitude in 2010. Accurate satellite position (20 cm) and velocity (0.03 cm/s) are required to treat highly precise Synthetic Aperture Radar (SAR) image processing.
Yoola Hwang +3 more
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Applied Sciences, 2020 The integrity monitoring algorithm based on pseudorange observations has been widely used outdoors and plays an important role in ensuring the reliability of positioning. However, pseudorange observations are greatly affected by the error sources such as
Yinzhi Zhao +7 more
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Remote Sensing, 2023 Today, land and ocean observations are crucial for monitoring climate change. The method of GNSS reflectometry is an opportunistic way to provide low-cost observations of many geophysical parameters.
Nolan Varais +3 more
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