Data processing pipeline for the Earth 2.0 mission

Xinyu Yao; Jian Ge; Hui Zhang; Kevin Willis; Jiapeng Zhu

doi:10.1117/12.2629135

27 August 2022 Data processing pipeline for the Earth 2.0 mission

Xinyu Yao, Jian Ge, Hui Zhang, Kevin Willis, Jiapeng Zhu

Proceedings Volume 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave; 121804E (2022) https://doi.org/10.1117/12.2629135
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

We present an overview of the data processing pipeline for the simulated data from the Earth 2.0 (ET) mission which is being developed in China. Our pipeline contains several modules, similar to the pipelines of some existing space missions aiming at exoplanet detection. The pipeline includes 1). the Pixel Level Calibration (PLC) module (such as bias correction, nonlinearity correction, undershoot correction, and flat correction); 2). the Photometric Analysis (PA) module; 3). the Presearch Data Conditioning (PDC) module (such as flux discontinuity correction, systematic error correction, and light curve flatten); 4). the Transiting Planet Search (TPS) module; 5). the Parameters Fitting (PF) module. Since we have not decided whether to use CCD or CMOS as the ET detector, we have prepared two versions of pipelines, respectively. We have used the existing Kepler raw pixel data to validate the pipeline in the CCD version, and the pipeline has successfully detected known transiting planet signals with similar S/N. In addition, our fitted parameters are highly consistent with those published parameters within a 1% to 10% difference (such as orbital period, orbital inclination, semi-major axis, and planetary radius). This pipeline is still in preliminary development. In the future, we will improve the running speed, detection accuracy and completeness by incorporating the deep learning technique and corrections of instrumental effects (such as the thermal effect and guiding errors). Eventually, the output of our pipeline will be used to feedback to ET mission design to maximize its science output.

Citation Download Citation

Xinyu Yao, Jian Ge, Hui Zhang, Kevin Willis, and Jiapeng Zhu "Data processing pipeline for the Earth 2.0 mission", Proc. SPIE 12180, Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave, 121804E (27 August 2022); https://doi.org/10.1117/12.2629135

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