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6 Result(s)

within Lifen Sui Remove this filter Earth Sciences Remove this filter Space Sciences (including Extraterrestrial Physics, Space Exploration and Astronautics) Remove this filter

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  1. No Access

    Article

    Computationally efficient dual-frequency uncombined precise orbit determination based on IGS clock datum

    Using uncombined (UC) or undifferenced original observations has become a research topic in the global navigation satellite system (GNSS) community. This far, precise orbit determination (POD) with ionospheric...

    Tian Zeng, Lifen Sui, Guorui **ao, Rengui Ruan, **aolin Jia in GPS Solutions (2019)

  2. No Access

    Article

    Analysis of Galileo/BDS/GPS signals and RTK performance

    New satellites and signals become available with the modernization of GNSS, especially for Galileo and BDS. The current Galileo constellation comprises 4 IOV (in-orbit validation) and 14 FOC (full operational ...

    Yijun Tian, Lifen Sui, Guorui **ao, Dongqing Zhao, Yuan Tian in GPS Solutions (2019)

  3. No Access

    Article

    Estimating and assessing Galileo satellite fractional cycle bias for PPP ambiguity resolution

    Due to the rapid deployment of the Galileo constellation, Galileo is now able to contribute to GNSS precise point positioning (PPP) ambiguity resolution (AR) with 17 operational satellites as of December 2017....

    Guorui **ao, Pan Li, Lifen Sui, Bernhard Heck, Harald Schuh in GPS Solutions (2018)

  4. No Access

    Article

    Estimating satellite phase fractional cycle biases based on Kalman filter

    Phase fractional cycle biases (FCBs) originating from satellites and receivers destroy the integer nature of PPP carrier phase ambiguities. To achieve integer ambiguity resolution of PPP, FCBs of satellites ar...

    Guorui **ao, Lifen Sui, Bernhard Heck, Tian Zeng, Yuan Tian in GPS Solutions (2018)

  5. No Access

    Article

    Real-time triple-frequency cycle slip detection and repair method under ionospheric disturbance validated with BDS data

    In order to resolve the real-time cycle slip detection and repair problem with the data under ionospheric disturbance and low sample rate, a new method is proposed by using triple-frequency combinations. First...

    Tian Zeng, Lifen Sui, Yangyin Xu, **aolin Jia, Guorui **ao, Yuan Tian… in GPS Solutions (2018)

  6. No Access

    Article

    Improved time-differenced cycle slip detect and repair for GNSS undifferenced observations

    GNSS undifferenced signal processing, in which the individual signal of each frequency is treated as independent observable, has drawn increasing interest in GNSS community. However, undifferenced signal proce...

    Guorui **ao, Michael Mayer, Bernhard Heck, Lifen Sui, Tian Zeng… in GPS Solutions (2017)