Optics and Precision Engineering, Volume. 32, Issue 1, 33(2024)

Error modeling and sensitivity analysis for space-borne InSAR baseline configuration measurement

Jie BAO, Xingtan LIU, Jianwu CHEN, Lin LI, and Chunhui ZHAO*
Author Affiliations
  • Space Optoelectronic Measurement and Perception Laboratory, Beijing Institute of Control Engineering, Beijing100190, China
  • show less
    Figures & Tables(13)
    Baseline measurement system of InSAR(one side)
    Baseline measurement system coordinates(right side)
    Baseline of dual antenna InSAR
    Error distribution and simulation flow chart
    Influence of installation angle of measuring device on length sensitivity
    Influence of installation angle of measuring device on angle sensitivity
    Synthesis simulation result of baseline measurement error
    • Table 1. Definition of coordinate system

      View table
      View in Article

      Table 1. Definition of coordinate system

      坐标系原 点

      Baseline-sensor

      (基线测量系,±Y

      B点为基线测量装置在整星安装的基准点
      Target(靶标系,±YT点为靶标相位中心
      Antenna(天线系,±YA点为天线几何中心
      Star-sensor(星本体系)S点为整星星敏安装基准点
      Orbit(卫星轨道系)O点为轨道系基准点
    • Table 2. Coordinate transformation definition

      View table
      View in Article

      Table 2. Coordinate transformation definition

      坐标系转换关系
      A-A'-T

      TA'A:在A'系下表示的AA'系的平移矢量

      TTA':在T系下表示的A'到T系的平移矢量

      RA'AAA'系的旋转矩阵

      RTA'A'到T系的旋转矩阵

      T-BTBT:在B系下表示的TB系的平移矢量
      RBTTB系的旋转矩阵
      B-STSB:在S系下表示的BS系的平移矢量
      RSBBS系的旋转矩阵
      S-OTOS:在O系下表示的SO系的平移矢量
      ROSSO系的旋转矩阵
    • Table 3. Baseline length error sensitivity

      View table
      View in Article

      Table 3. Baseline length error sensitivity

      位置参数灵敏度角度参数灵敏度
      坐标系参 数灵敏度(μm/μm)坐标系参 数灵敏度(μm/asec)
      (6)T2-A2Y0.999 97(4)S-B2JX14.053 34
      (4)S-B2Y0.999 97(1)S-B1JX13.964 52
      (1)S-B1Y0.999 97(1)S-B1JZ11.152 13
      (5)B2-T2Y0.999 81(4)S-B2JZ6.343 67
      (2)B1-T1Y0.999 52(5)B2-T2JX3.243 61
      (3)T1-A1'Y0.999 07(5)B2-T2JZ2.432 46
      (6+)A2'-A2Y0.842 82(2)B1-T1JZ2.332 3
      (3+)A1'-A1Y0.824 41(2)B1-T1JX1.548 68
      (3+)A1'-A1Z0.565 72(3)T1-A1'JX0.811 09
      (6+)A2'-A2Z0.537 89(6)T2-A2JX0.799 78
      (3)T1-A1'X0.034 62(1)S-B1JY0.361 01
      (3)T1-A1'Z0.025 75(4)S-B2JY0.131 82
      (2)B1-T1X0.025 75(5)B2-T2JY0.039 89
      (6+)A2'-A2X0.017 87(6)T2-A2'JZ0.020 14
      (3+)A1'-A1X0.017 63(6)T2-A2'JY0.014 34
      (2)B1-T1Z0.017 33(3)T1-A1'JY0.014 15
      (5)B2-T2Z0.016 96(2)B1-T1JY0.013 67
      (5)B2-T2X0.009 15(3)T1-A1'JZ0.008 06
      (1)S-B1X0.008 30
      (4)S-B2X0.008 30
      (6)T2-A2'Z0.008 23
      (1)S-B1Z0.000 34
      (4)S-B2Z0.000 34
      (6)T2-A2'X0.000 27
    • Table 4. Baseline angle error sensitivity

      View table
      View in Article

      Table 4. Baseline angle error sensitivity

      位置参数灵敏度角度参数灵敏度
      坐标系参 数灵敏度(asec/μm)坐标系参 数灵敏度(asec/asec)
      (2)B1-T1Z0.001 653(4)S-B2JX0.502 61
      (5)B2-T2Z0.001 653(1)S-B1JX0.489 61
      (1)S-B1Z0.001 652(4)S-B2JZ0.017 41
      (3)T1-A1'Z0.001 652(1)S-B1JZ0.016 94
      (4)S-B2Z0.001 652(4)S-B2JY0.007 54
      (6)T2-A2Z0.001 652(1)S-B1JY0.007 54
      (6+)A2'-A2Z0.001 394(2)B1-T1JX0.004 64
      (3+)A1'-A1Z0.001 363(5)B2-T2JY0.004 11
      (3+)A1'-A1Y0.000 935(2)B1-T1JY0.004 06
      (6+)A2'-A2Y0.000 889(5)B2-T2JX0.003 39
    • Table 4. Baseline angle error sensitivity

      View table
      View in Article

      Table 4. Baseline angle error sensitivity

      位置参数灵敏度角度参数灵敏度
      坐标系参 数灵敏度(asec/μm)坐标系参 数灵敏度(asec/asec)
      (1)S-B1X0.000 057(6)T2-A2JX0.000 58
      (4)S-B2X0.000 057(3)T1-A1'JX0.000 54
      (6)T2-A2X0.000 043(5)B2-T2JZ0.000 13
      (3)T1-A1'Y0.000 041(6)T2-A2JZ0.000 02
      (5)B2-T2Y0.000 029(2)B1-T1JZ0.000 01
      (2)B1-T1X0.000 028(3)T1-A1'JY0.000 01
      (5)B2-T2X0.000 028(6)T2-A2JY0.000 01
      (2)B1-T1Y0.000 027(3)T1-A1'JZ0.000 00
      (3+)A1'-A1X0.000 015
      (6)T2-A2Y0.000 015
      (3)T1-A1'X0.000 014
      (6+)A2'-A2X0.000 014
      (1)S-B1Y0.000 001
      (4)S-B2Y0.000 001
    • Table 5. Error distribution(B1-T1

      View table
      View in Article

      Table 5. Error distribution(B1-T1

      变量系统误差随机误差(3σ
      标定残差测量误差力热变形长期稳定漂移
      X50 μm300 μm100 μm5 μm
      Y50 μm300 μm30 μm10 μm
      Z50 μm300 μm100 μm0 μm
      AX5″50″3″0″
      AY5″50″10″0″
      AZ5″50″3″0″
    Tools

    Get Citation

    Copy Citation Text

    Jie BAO, Xingtan LIU, Jianwu CHEN, Lin LI, Chunhui ZHAO. Error modeling and sensitivity analysis for space-borne InSAR baseline configuration measurement[J]. Optics and Precision Engineering, 2024, 32(1): 33

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category:

    Received: Sep. 13, 2023

    Accepted: --

    Published Online: Jan. 23, 2024

    The Author Email: Chunhui ZHAO (saobear@ 163.com)

    DOI:10.37188/OPE.20243201.0033

    Topics