Spacecraft Recovery & Remote Sensing, Volume. 46, Issue 2, 86(2025)

Design Technology on the Optical Remote Sensing System for High-Orbit Satellite Observation in the Ocean and Coastal Zone

Zhicheng SHI1, Shoucai ZHANG1, Dongnan CHI1, Jing DING2, Xianqiang HE3,4, and Pengmei XU1
Author Affiliations
  • 1Beijing Institute of Space Mechanics & Electricity, Beijing 100094, China
  • 2National Satellite Ocean Application Service, Beijing 100101, China
  • 3State Key Laboratory of Satellite Ocean Environment Dynamics, Hangzhou 310012, China
  • 4Second Institute of Oceanography, MNR, Hangzhou 310012, China
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    Figures & Tables(13)
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    • Table 1. Technical parameters of the GOCI camera

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      Table 1. Technical parameters of the GOCI camera

      项目设计指标
      光学系统构型离轴三反系统
      口径140 mm
      星下点像元分辨率500 m
      时间分辨率1h(≥8次/d)
      可见光探测器面阵CMOS(1415×1432
      幅宽500 km×500 km
      观测区域2500 km×2500 km
      谱段402~885 nm
      光谱分辨率10~40 nm
      信噪比750~1200
      辐射定标精度4 %
    • Table 2. Technical parameters of the GEO-CAPE camera

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      Table 2. Technical parameters of the GEO-CAPE camera

      项目指标
      最低要求设计目标
      时间分辨率1 h0.5 h
      空间分辨率375 m×375 m250 m×250 m
      关注区域北纬 60 °~南纬 60 °,西经 155 °~西经 35°北纬 60 °~南纬 60 °,西经 155 °~西经 35°
      谱段345~1050 nm2个短波红外波段:1245、1640 nm340~1100 nm3个短波红外波段:1245、1640、2135 nm
      光谱分辨率紫外-可见光-近红外:≤5 nm400~450 nm:≤0.4 nm (二氧化氮)短波红外:≤20~40 nm紫外-可见光-近红外:≤0.75 nm短波红外:≤20~50 nm
      SNR350~800 nm (10 nm 半高宽):1000 : 1近红外(40 nm 半高宽):600 : 1 1245 、 1640 nm (20 ~40 nm 半高宽):250 : 1 、180 : 1二氧化氮:≥500 : 1350~800 nm:1500 : 1 2135 nm (50 nm 半高宽):100 : 1 近红外、短波红外和二氧化氮与阈值相同
    • Table 3. Spectral band setting reference table

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      Table 3. Spectral band setting reference table

      成像通道序号谱段范围/µm带宽/nm应用对象
      可见光近红外B10.402~0.42220溶解有机物、颗粒有机物、光合有效辐射(PAR)、浑浊水体大气校正
      B20.433~0.45320叶绿素、颗粒无机碳、颗粒有机碳、溶解有机物、PAR
      B30.480~0.50020叶绿素、漫衰减系数、颗粒有机碳、溶解有机物、总悬浮物、PAR
      B40.510~0.53020叶绿素、总悬浮物、PAR
      B50.555~0.57520叶绿素、颗粒无机碳、颗粒有机碳、中低浓度悬浮物、PAR
      B60.610~0.63020中等浓度悬浮物、藻青蛋白、PAR
      B70.655~0.67520叶绿素、中等浓度悬浮物、植被、PAR
      B80.678~0.69315荧光线高度、PAR、初级生产力、大型漂浮藻类、赤潮
      B90.703~0.71815荧光基线、高浓度悬浮泥沙
      B100.740~0.76020清洁水体大气校正、高浓度悬浮泥沙
      B110.845~0.88540清洁水体大气校正、高浓度悬浮泥沙
      B120.400~0.900500海岛、海陆目标
      B130.400~0.46060水深、底质、水色、海冰、植被、污染
      B140.460~0.52060水深、底质、污染、滩涂监测
      B150.520~0.58060水深、底质、悬浮泥沙、植被分类
      B160.660~0.73070植被健康指数、悬浮泥沙
      短中波红外B171.230~1.25020浊水体大气校正、陆地/云/气溶胶
      B181.620~1.66040浊水体大气校正、陆地/云/气溶胶
      B192.110~2.16050浊水体大气校正、陆地/云/气溶胶
      B203.550~3.930380高反射率高温目标、海雾、海温、云
      长波红外B218.010~8.390380水汽、云温度
      B228.420~8.830410水汽量、地表温度
      B2310.300~11.3001000海表面温度、海冰、白天/夜间云层
      B2411.500~12.5001000海表面温度、海冰、白天/夜间云层
    • Table 4. Compliance of indicators

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      Table 4. Compliance of indicators

      项目设计要求指标指标实现情况符合度
      海洋水色与环境探测谱段≥20个参考谱段0.402~12.5 µm共24个符合
      星下点像元分辨率可见光通道25~200 m短中波通道200 m长波通道500 m可见光近红外24.9 m且25~200 m可选短中波红外198.6 m长波红外497.1 m符合
      观测幅宽≥500 km×500 km501.9 km×501.9 km符合
      水色SNR10001040符合
      NETD≤0.1 K(在300 K温度时)0.098 K(在300 K温度时)符合
      偏振灵敏度≤2%1.46%符合
      绝对辐射定标精度可见近红外:≤3%红外:≤0.7 K可见近红外:2.90%红外:0.67 K符合
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    Zhicheng SHI, Shoucai ZHANG, Dongnan CHI, Jing DING, Xianqiang HE, Pengmei XU. Design Technology on the Optical Remote Sensing System for High-Orbit Satellite Observation in the Ocean and Coastal Zone[J]. Spacecraft Recovery & Remote Sensing, 2025, 46(2): 86

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    Paper Information

    Category: Remote Sensing System Design Technology

    Received: Nov. 8, 2024

    Accepted: --

    Published Online: May. 23, 2025

    The Author Email:

    DOI:10.3969/j.issn.1009-8518.2025.02.008

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