Qi Liu

ORCID: 0009-0008-6278-9218
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About
Contact & Profiles
Research Areas
  • Soil Moisture and Remote Sensing
  • Precipitation Measurement and Analysis
  • Synthetic Aperture Radar (SAR) Applications and Techniques
  • Climate change and permafrost
  • Ionosphere and magnetosphere dynamics
  • Flood Risk Assessment and Management
  • Radar Systems and Signal Processing
  • Cryospheric studies and observations
  • Indoor and Outdoor Localization Technologies
  • GNSS positioning and interference
  • Geophysics and Gravity Measurements
  • Advanced SAR Imaging Techniques

Sun Yat-sen University
2024

Chang'an University
2023

Accurate global soil moisture (SM) data are crucial for modeling land surface hydrological cycles and monitoring climate change. Spaceborne navigation satellite system reflectometry (GNSS-R) has attracted extensive attention due to its unique advantages, such as faster revisit time, lower payload costs, all-weather operation. GNSS signal reflected at L-band also significant advantages SM estimation. Usually, is estimated based on the sensitivity of GNSS-R reflectivity SM, but noise in...

10.3390/rs15143669 article EN cc-by Remote Sensing 2023-07-23

The multipath effect of holographic staring radar seriously affects the altitude estimation performance low-elevation targets in complex terrain. Moreover, current literature on bistatic target does not make full use constraint that estimates from different base stations correspond to same target, which is suboptimal technique. To tackle above problem, we propose a direct method for combines spatial diversity and aperture extension coprime array. A practical signal model T/R-R first...

10.1109/jsen.2024.3387534 article EN IEEE Sensors Journal 2024-04-17
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