• Chinese Journal of Lasers
  • Vol. 48, Issue 12, 1210002 (2021)
Fansheng Chen1、2、*, Zhuoyue Hu1、3, Xiaoyan Li1、3, Lin Yang1, Xingjian Hu1, and Yong Zhang1
Author Affiliations
  • 1Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
  • 2Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, Zhejiang 310024, China
  • 3University of Chinese Academy of Sciences, Beijing 100049, China
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    DOI: 10.3788/CJL202148.1210002 Cite this Article Set citation alerts
    Fansheng Chen, Zhuoyue Hu, Xiaoyan Li, Lin Yang, Xingjian Hu, Yong Zhang. Research on Wide-Range and High-Resolution Thermal Infrared Remote Sensing Imaging Technology[J]. Chinese Journal of Lasers, 2021, 48(12): 1210002 Copy Citation Text show less
    Layout of TIRI. (a) Overall structure of TIRI; (b) internal structure of TIRI; (c) external structure of TIRI
    Fig. 1. Layout of TIRI. (a) Overall structure of TIRI; (b) internal structure of TIRI; (c) external structure of TIRI
    Structure diagram of TIRI optical system
    Fig. 2. Structure diagram of TIRI optical system
    Spectral response curve of TIRI
    Fig. 3. Spectral response curve of TIRI
    Layout of TIRI focal plane
    Fig. 4. Layout of TIRI focal plane
    Structure design of dewar
    Fig. 5. Structure design of dewar
    Coaxial pulse tube refrigerator
    Fig. 6. Coaxial pulse tube refrigerator
    Diagram of forward whisk-broom imaging. (a) Diagram of forward whisk-broom imaging process; (b) angular velocity curve of swinging mirror during forward whisk-brooming
    Fig. 7. Diagram of forward whisk-broom imaging. (a) Diagram of forward whisk-broom imaging process; (b) angular velocity curve of swinging mirror during forward whisk-brooming
    Diagram of forward and backward whisk-broom imaging. (a) Diagram of forward and backward whisk-broom imaging process; (b) angular velocity curve of swinging mirror during forward and backward whisk-brooming
    Fig. 8. Diagram of forward and backward whisk-broom imaging. (a) Diagram of forward and backward whisk-broom imaging process; (b) angular velocity curve of swinging mirror during forward and backward whisk-brooming
    Design of light path for radiation calibration
    Fig. 9. Design of light path for radiation calibration
    IndexLandsat 8 TIRSVRSS-2 IRCGF-5 VIRMIASTER TIRHJ-1B IRSCASEarth TIRI
    Orbit /km705645705702650505
    Width /km185306060720300
    Resolution /m10060409030030
    Width/Resolution18505001500666240010000
    Spectrum /μm10.6-11.1911.5-12.5110.3-11.311.5-12.510.3-11.311.4-12.58.125-8.4758.475-8.8258.925-9.27510.25-10.9510.95-11.6510.5-12.510.3-11.311.5-12.58.0-10.5
    Noise-equivalent temperature difference /K0.4 (at 300 K)//0.3 (at 300 K)/0.2 (at 300 K)
    Calibration accuracy /K1.67 (at 300 K)(B11: thermal infrared band of Landsat 8 TIRS)1.5 (at 280 K)1 (at 300 K)1 (at 300 K)1 (at 300 K)1 (at 300 K)
    Detector /pixel186051215007004002000
    Table 1. Parameters comparison of main thermal infrared payloads at home and abroad
    ItemDesign index
    Orbit /km505
    Imaging width /km300
    Resolution /m30
    Bands /μm8-10.510.3-11.311.5-12.5
    Pixel size /μm30
    Dynamic range /K220-340
    Scanning accuracy /(″)≤ 6 (object space, 3σ)
    Sensitivity /K< 0.1 (at 300 K)
    Field of view (FOV) /(°)7.0
    Scanning FOV /(°)≥ 33.1
    Dynamic modulation transfer function≥ 0.1
    F#1.94
    Focal length /mm505×(1±5%)
    Table 2. Technical specifications of TIRI
    ItemCASEarth TIRI
    Optic lens195 K
    Scan mirror270 K
    Table 3. Temperature field design of TIRI
    Fansheng Chen, Zhuoyue Hu, Xiaoyan Li, Lin Yang, Xingjian Hu, Yong Zhang. Research on Wide-Range and High-Resolution Thermal Infrared Remote Sensing Imaging Technology[J]. Chinese Journal of Lasers, 2021, 48(12): 1210002
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