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基于北斗GEO卫星反射信号的渤海海冰检测

张云 谢向芳 孟婉婷 杨树瑚 高强 王炜

张云, 谢向芳, 孟婉婷, 等 . 基于北斗GEO卫星反射信号的渤海海冰检测[J]. 北京航空航天大学学报, 2018, 44(2): 257-263. doi: 10.13700/j.bh.1001-5965.2017.0149
引用本文: 张云, 谢向芳, 孟婉婷, 等 . 基于北斗GEO卫星反射信号的渤海海冰检测[J]. 北京航空航天大学学报, 2018, 44(2): 257-263. doi: 10.13700/j.bh.1001-5965.2017.0149
ZHANG Yun, XIE Xiangfang, MENG Wanting, et al. Bohai coastal sea ice detection using BeiDou GEO satellite reflected signals[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(2): 257-263. doi: 10.13700/j.bh.1001-5965.2017.0149(in Chinese)
Citation: ZHANG Yun, XIE Xiangfang, MENG Wanting, et al. Bohai coastal sea ice detection using BeiDou GEO satellite reflected signals[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(2): 257-263. doi: 10.13700/j.bh.1001-5965.2017.0149(in Chinese)

基于北斗GEO卫星反射信号的渤海海冰检测

doi: 10.13700/j.bh.1001-5965.2017.0149
基金项目: 

国家自然科学基金 41376178

国家自然科学基金 41401489

国家自然科学基金 41506213

详细信息
    作者简介:

    张云 男, 博士, 博士生导师。主要研究方向:导航系统的高精度定位原理研究、导航系统的反射信号的海洋遥感技术研究和导航遥感技术的海洋应用产品的研究与开发

    谢向芳 女, 硕士研究生。主要研究方向:GNSS-R海冰检测

    孟婉婷 女, 硕士, 助理工程师。主要研究方向:基于GNSS-R技术的海冰反演和测高反演

    杨树瑚 男, 博士, 讲师。主要研究方向:南极冰盖的电磁探测反演

    通讯作者:

    张云, E-mail:y-zhang@shou.edu.cn

  • 中图分类号: V221+.3;TB553

Bohai coastal sea ice detection using BeiDou GEO satellite reflected signals

Funds: 

National Natural Science Foundation of China 41376178

National Natural Science Foundation of China 41401489

National Natural Science Foundation of China 41506213

More Information
  • 摘要:

    随着全球导航卫星系统反射信号(GNSS-R)的提出,其在海冰检测领域的应用也越来越广泛。北斗地球同步轨道(GEO)卫星的角速度较小且仰角变化仅有3°~4°,因此在相同观测地点其镜面反射点的空间位置非常稳定,可以提高特定区域海冰检测的时间分辨率。对在中国渤海湾进行的2次岸基海冰检测实验(2015年1月24日和2016年1月30日至2月4日)进行分析,验证了北斗GEO B1反射信号对沿岸海冰进行长时间连续检测的可行性。第1个实验结果显示海冰密集度与2颗GEO卫星C01和C03的极化比值结果具有相关性;第2个实验结果显示3颗GEO卫星C01、C02和C03检测的海冰极化比值与大气温度存在正相关关系,其中C01、C02和C03的极化比值与大气温度的相关值分别为0.61、0.72和0.57。

     

  • 图 1  2016年2月1日的24 h北斗混合星座代表卫星的时序图

    Figure 1.  24 h timing diagram of BeiDou mixed constellation (February 1, 2016)

    图 2  RMSϕ计算流程

    Figure 2.  Calculation flowchart of RMSϕ

    图 3  实验场地接收机和镜面反射点位置

    Figure 3.  Receiver and specular reflection points of experimental area

    图 4  2016年1月30日实验地点卫星天顶图

    Figure 4.  Skyplot of satellite at experiment point (January 30, 2016)

    图 5  2015年1月24日08:24时刻C01卫星路径延迟与相关功率关系曲线

    Figure 5.  Relationship between path delay and related power of C01 satellite (January 24, 2015, 08:24)

    图 6  海冰密集度及实验场景

    Figure 6.  Pictures of sea ice concentration and experimental scene

    图 7  C01和C03卫星的极化比、海冰密集度和大气温度变化

    Figure 7.  Polarization ratio, sea ice concentration and atmospheric temperature change of C01 and C03 satellites

    图 8  极化比与大气温度的关系

    Figure 8.  Relationship between polarization ratio and atmospheric temperature

    图 9  2次实验的RMSϕ

    Figure 9.  RMSϕ values of two experiments

    图 10  2次实验海冰状况实景图

    Figure 10.  View diagrams of two sea ice experiments

    表  1  D-RHCP、R-LHCP和R-RHCP天线的参数对比

    Table  1.   Comparison of parameters of D-RHCP, R-LCHP and R-RHCP antennas

    参数 D-RHCP
    天线
    R-LHCP
    天线
    R-RHCP
    天线
    工作温度/℃ -55~+85 -40~+80 -55~+85
    天线增益/dB 3 12 12
    波束角/(°) 0~360 21 21
    质量/kg < 0.2 1.2 1.2
    尺寸/(mm×mm×mm) 119×76×18 212×212×20 212×212×20
    下载: 导出CSV

    表  2  2016年实验中每天的海冰密集度

    Table  2.   Daily sea ice concentration of experiment in 2016

    时刻 海水密集度
    2016-01-30 2016-01-31 2016-02-01 2016-02-02 2016-02-03 2016-02-04
    08:00 0.91 0.93 0.93 0.93 1.00 0.97
    11:00 0.94 0.97 1.00 1.00 0.95 0.95
    14:00 0.95 0.99 1.00 1.00 0.98 0.94
    17:00 0.95 0.99 1.00 1.00 0.98 0.94
    下载: 导出CSV

    表  3  极化比和大气温度的相关性

    Table  3.   Relationship between polarization ratio and atmospheric temperature

    卫星 仰角/(°) 相关值 总相关值
    2016-01-30 2016-01-31 2016-02-01 2016-02-02 2016-02-03 2016-02-04
    C01 38 0.55 0.67 0.82 0.71 0.45 0.49 0.61
    C02 30 0.66 0.78 0.80 0.76 0.84 0.68 0.72
    C03 43 0.54 0.57 0.73 0.72 0.60 0.52 0.57
    下载: 导出CSV

    表  4  2次实验的RMSϕ值的标准差

    Table  4.   Standard deviation of RMSϕ of two experiments

    实验 标准差
    C01 C02 C03
    第1次 0.129 7 0.143 7
    第2次 0.002 6 0.002 4 0.002 3
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-03-04
  • 录用日期:  2017-06-16
  • 刊出日期:  2018-02-20

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