Yicheng Rui

Yicheng Rui

PhD Candidate in Astronomy @ Shanghai Jiao Tong University

About Me

Hi, I am Yicheng Rui. I am currently a PhD candidate in Astronomy at Shanghai Jiao Tong University. My research interests lie in exoplanet detection, time-domain astronomy, AI4Science, and Science4AI.

I am currently working on the Tianyu Project, serving as a full-stack developer for observation control and data processing. I have experience in handling large-scale survey data and developing algorithms for high-precision photometry and astrometry.

I am also an amateur in classical music, history, astrophotography, DOTA2, and robotic.

Education

PhD in Astronomy

Shanghai Jiao Tong University | 2022 - Present

GPA: 4.0/4.0

Bachelor of Physics

Shanghai University | 2018 - 2022

GPA: 3.93/4.0

Research Projects

Tianyu Project
Tianyu Project (Full-stack Developer)
Jun 2023 - Present

Working on a 1-meter optical survey telescope in Lenghu.

  • Developed DeepAP: A deep learning framework for aperture photometry (~59,000× speed-up).
  • Built a distributed data pipeline (MySQL + RabbitMQ) for ~20TB/year data.
  • Developing the OCS for Tianyu telescope.

Astrometry Research
Mitigating Astrometric Bias
Dec 2021 - Jun 2023

Focused on high-precision barycentric correction for radial-velocity time series.

  • Developed a gradient-based method to correct biases in stellar astrometric parameters using PEXO.
  • Critical for Earth-twin exoplanet searches.

LenghuSky-8
LenghuSky-8: Multimodal Dataset, Segmentation, and Weather Nowcasting
2024 - 2026

Developed an 8-year, 429k-image all-sky camera dataset from Lenghu, Qinghai; accepted by CVPR 2026 Findings.

  • Performed absolute astrometric calibration and constructed star-aware cloud masks.
  • Benchmarked cloud segmentation and weather nowcasting models.
  • Evaluated representation and forecasting models including DINOv3 linear probing and ConvLSTM.

Robotics Competition
Robotics Competitions
2009 - 2019

Participated in Robocup @Home and Robocup Junior Maze.

  • Won National Championship and World Championship awards.
  • Experience in hardware control and autonomous navigation.

Selected Publications

LenghuSky-8: An 8-Year All-Sky Cloud Dataset with Star-Aware Masks and Alt-Az Calibration for Segmentation and Nowcasting
Mar 2026

Yicheng Rui†, Xiao-Wei Duan, Licai Deng, et al. CVPR 2026 Findings. arXiv:2603.16429.
DeepAP: Deep Learning-based Aperture Photometry Feasibility Assessment...
Sept 2025

Zhengjun Du, Qingquan Li, Yicheng Rui†, et al. Research in Astronomy and Astrophysics.
Architecture of the Tianyu Software: Relative Photometry as a Case Study
June 2025

Yicheng Rui, Yifan Xuan, Shuyue Zheng, et al.
Tianyu-Search for the Second Solar System and Explore the Dynamic Universe
July 2024

Fabo Feng, Yicheng Rui†, Zhimao Du, et al. Acta Astronomica Sinica.
Mitigating astrometric bias in barycentric correction with PEXO
Feb 2024

Yicheng Rui and Fabo Feng. MNRAS.
View Full List on Google Scholar

Awards