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(1) Characterizing low-latitude ionospheric scintillations using multiple sensors and their impacts on Chinese Beidou Navigation Satellite System (2) Oceanic atmospheric water vapor monitoring using shipborne and remote sensing satellite multiple sensor d

Advisor’s Name

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Position

Associate Professor (tenured)

Affiliation

Department of Land Surveying & Geo-Informatics (LSGI)

The Hong Kong Polytechnic University (PolyU)

Webpage

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E-mail

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Research Interests and Current Projects

Dr. Liu’s Lab has a broad spectrum of research interests,  including ionosphere modeling and scintillation monitoring, tropospheric remote sensing and modeling, and GPS/GNSS meteorology, new algorithm development for precise Global Positioning System (GPS) and Global Navigation Satellite System (GNSS), GPS/GNSS precise point positioning (PPP),.

Research projects: (1) Investigating the Ionospheric Scintillation Characteristics using Space- and Ground- Based GNSS Observations in Hong Kong during Solar Maximum;  (2) 3D Water Vapor Tomographic Modeling by Assimilating Multiple Sensors to Support Extreme Weather Forecasting in Hong Kong and Mainland China.

These two were funded by the Hong Kong Research Grants Council.

Title of the URP

(1) Characterizing low-latitude ionospheric scintillations using multiple sensors and their impacts on Chinese Beidou Navigation Satellite System

(2) Oceanic atmospheric water vapor monitoring using shipborne and remote sensing satellite multiple sensor data

URP Host

  Advisor’s Institution          USTC

URP Financial Support

  No       Living Cost       Traveling Cost    

  Living and Traveling Cost

   Others (please specify):  Scholarship of a few thousand HK$ might be available to each participant.

URP Start Time

Flexible

URP End

Time

Flexible

Brief Description of the URP

Ionospheric scintillations have a great impact on radio propagation. The low-latitude region is prone to this impact mainly due to the equatorial F-region irregularities. The signals of Chinese Beidou Navigation Satellite System, among other radio signals such as GPS, are seriously affected by the scintillations.

In this project, we will first use multiple-sensor data such as GPS/GNSS, airglow, and digisonde to characterize the low-latitude region scintillations. Their impacts on the radio signals and Beidou positioning and navigation precision will also be evaluated.

Dr. Liu’s Lab is well equipped with research facilities including advanced GNSS-based scintillation receivers, high-performance computing system, geostationary data receiving station (1.8 m antenna), 100-Tb network-attached-storage (NAS), advanced GNSS positioning and navigation receivers and software.

Requirements for Students

and Prerequisite Courses

We welcome students who are self-motived in conducting scientifically interesting and practically useful research, at well equipped research Lab at the Department of Land Surveying & Geo-Informatics (LSGI), Hong Kong Polytechnic University. Students with background in ionosphere, space weather, space physics and other relevant disciplines are welcome to apply. Computer programming and data analysis skills are needed. Knowledge in GPS/GNSS is an asset but not required. It is ideal to have English test (IELTS or TOEFL) scores and publication record, but it is not required.

Students with a major in atmospheric science who are interested in conducting research in atmospheric water vapor observation/modeling using GPS/GNSS, remote sensing satellites and other sensors are welcome to join Dr. Liu’s Lab too.