# Accuracy Verification and Correction of D-InSAR and SBAS-InSAR in Monitoring Mining Surface Subsidence

^{*}

## Abstract

**:**

## 1. Introduction

## 2. Materials and Methods

#### 2.1. Study Area

#### 2.2. Data

#### 2.3. Methods

#### 2.3.1. D-InSAR Subsidence Monitoring

#### 2.3.2. SBAS-InSAR Subsidence Monitoring

## 3. Results

#### 3.1. Overall Comparative Analysis of D-InSAR- and SBAS-InSAR-Monitored Results

#### 3.2. Overall Comparative Analysis of D-InSAR- and SBAS-InSAR-Monitored Results

#### 3.2.1. D-InSAR-, SBAS-InSAR- and Leveling-Monitored Results

#### 3.2.2. Division of Different Subsidence Magnitude in the Mining Area

#### 3.2.3. Comparison of InSAR- and Leveling-Monitored Results with Different Subsidence Magnitudes

## 4. Correction

#### 4.1. Fitting Curves of Leveling- and InSAR-Monitored Errors

#### 4.2. Relationship between Leveling and InSAR-Monitored Errors

#### 4.3. Correction of InSAR Monitored Results

## 5. Discussion

## 6. Conclusions

## Author Contributions

## Funding

## Institutional Review Board Statement

## Informed Consent Statement

## Data Availability Statement

## Acknowledgments

## Conflicts of Interest

## References

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**Figure 1.**Geographical location and scope of the mining area: (

**a**) location of the mining area, (

**b**) positions of the working surfaces in the northern mining area, and (

**c**) positions of the working surfaces in the southern mining area.

**Figure 7.**Comparison between InSAR- and leveling-monitored results: (

**a**) dip line and (

**b**) strike line.

**Figure 8.**Comparison and correlation coefficients of subsidence curves monitored by D-InSAR, SBAS-InSAR and leveling: (

**a**) point H9, (

**b**) point H18, (

**c**) point H24, and (

**d**) point Z14.

**Figure 9.**Comparison and correlation coefficients of subsidence curves monitored by D-InSAR, SBAS-InSAR and leveling: (

**a**) point H30, (

**b**) point H53, (

**c**) point Z58 and (

**d**) point Z63.

**Figure 10.**Comparison and correlation coefficients of subsidence curves monitored by D-InSAR, SBAS-InSAR and leveling: (

**a**) point H34, (

**b**) point H41, (

**c**) point Z72 and (

**d**) point Z83.

**Figure 11.**The fitting curves between the distance from the leveling observation point to the subsidence center and InSAR-monitored errors: (

**a**) D-InSAR fitting curve on the dip line; (

**b**) D-InSAR fitting curve on the strike line; (

**c**) SBAS-InSAR fitting curve on the dip line; (

**d**) SBAS-InSAR fitting curve on the strike line.

**Figure 12.**The comparison between the corrected InSAR- and leveling-monitored results: (

**a**) dip line and (

**b**) strike line.

No | Strike Length/m | Dip Length/m | Mining Period | No | Strike Length/m | Dip Length/m | Mining Period |
---|---|---|---|---|---|---|---|

I | 1800 | 200 | 2010/11–2013/01 | VIII | 573 | 223 | 2011/07–2012/03 |

II | 400 | 190 | 2010/01–2010/06 | IX | 770 | 171 | 2012/12–2013/08 |

III | 2070 | 210 | 2012/06–2015/08 | X | 1800 | 102 | 2014/12–2015/06 |

IV | 800 | 130 | 2010/09–2011/03 | XII | 1350 | 143 | 2016/01–2016/10 |

V | 1823 | 224 | 2013/09–2016/08 | XIV | 243 | 107 | 2016/04–2016/06 |

VI | 690 | 110 | 2015/02–2015/11 | XVI | 185 | 380 | 2016/10–2017/01 |

VII | 1150 | 240 | 2016/04 to present |

No | Imaging Date | Orbit | No | Imaging Date | Orbit |
---|---|---|---|---|---|

1 | 2015/08/23 | 7389 | 9 | 2016/03/26 | 10,539 |

2 | 2015/09/16 | 7739 | 10 | 2016/04/19 | 10,889 |

3 | 2015/10/10 | 8089 | 11 | 2016/06/30 | 11,939 |

4 | 2015/11/03 | 8439 | 12 | 2016/07/24 | 12,289 |

5 | 2015/11/27 | 8789 | 13 | 2016/08/29 | 12,814 |

6 | 2015/12/21 | 9139 | 14 | 2016/10/04 | 13,339 |

7 | 2016/01/14 | 9489 | 15 | 2016/11/09 | 13,864 |

8 | 2016/03/02 | 10,189 | 16 | 2016/12/03 | 14,214 |

Cumulative Mean Absolute Error/mm | Cumulative Root Mean Square Error/mm | Cumulative Maximum Absolute Error/mm | Cumulative Absolute Error at Maximum Settlement Point/mm | ||
---|---|---|---|---|---|

D-InSAR | Dip line | 203 | 291 | 659 | 643 |

Strike line | 349 | 433 | 923 | 923 | |

SBAS-InSAR | Dip line | 338 | 480 | 1049 | 1049 |

Strike line | 457 | 550 | 1079 | 1079 |

Cumulative Mean Absolute Error/mm | Cumulative Root Mean Square Error/mm | Cumulative Maximum Absolute Error/mm | Cumulative Absolute Error at Maximum Settlement Point/mm | ||
---|---|---|---|---|---|

Corrected D-InSAR | Dip line | 52 | 75 | 187 | 9 |

Strike line | 106 | 144 | 324 | 271 | |

Corrected SBAS-InSAR | Dip line | 71 | 89 | 227 | 84 |

Strike line | 106 | 131 | 338 | 114 |

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**MDPI and ACS Style**

Chen, Y.; Yu, S.; Tao, Q.; Liu, G.; Wang, L.; Wang, F.
Accuracy Verification and Correction of D-InSAR and SBAS-InSAR in Monitoring Mining Surface Subsidence. *Remote Sens.* **2021**, *13*, 4365.
https://doi.org/10.3390/rs13214365

**AMA Style**

Chen Y, Yu S, Tao Q, Liu G, Wang L, Wang F.
Accuracy Verification and Correction of D-InSAR and SBAS-InSAR in Monitoring Mining Surface Subsidence. *Remote Sensing*. 2021; 13(21):4365.
https://doi.org/10.3390/rs13214365

**Chicago/Turabian Style**

Chen, Yang, Shengwen Yu, Qiuxiang Tao, Guolin Liu, Luyao Wang, and Fengyun Wang.
2021. "Accuracy Verification and Correction of D-InSAR and SBAS-InSAR in Monitoring Mining Surface Subsidence" *Remote Sensing* 13, no. 21: 4365.
https://doi.org/10.3390/rs13214365