YunYuan D-InSAR

1、 Product Overview 

YunYuan Differential Interferometric SAR System integrates D-InSAR technology onto an unmanned aerial vehicle (UAV) platform, further overcoming the limitations of long satellite revisit cycles, insufficient maneuverability, and high costs associated with manned operations. This provides a new approach for regional, high-frequency, and high-precision deformation monitoring. Leveraging its all-weather, all-day operation capability and high sensitivity to surface deformation, the system effectively penetrates vegetation canopies and dry soil layers, maintaining good interferometric coherence even in vegetated areas. Through rigorous experimental design and data processing, the system successfully achieved millimeter-level deformation monitoring capabilities using UAV-based heavy-orbit InSAR under real-world operating conditions, demonstrating unique advantages in applications such as agricultural soil moisture monitoring, forestry resource surveys, underground target detection, and geological hazard identification.

2、 Technical Advantages

1. High-Precision Repeat-Pass Flight Trajectory Control
Utilizing a multi-rotor UAV platform equipped with an RTK navigation module, repeat-pass accuracy reaches the decimeter level, laying a solid foundation for high-quality acquisition of subsequent interferometric phase data;
2. High-Precision Motion Compensation and Imaging Processing
POS data post-processing is performed using Inertial Explorer software, and high-precision trajectory information is obtained through PPK (Dynamic Post-Processing Differential) calculation;

SAR imaging processing software is used to complete radar imaging, including radar parameter correction, antenna phase center (APC) position import, and relative flight altitude and ground reference altitude setting, generating single-polarization and fully polarized DOM images;
3. Interference Processing Chain
Based on GAMMA software, a standard interferometric processing workflow is completed: image fine registration, interferogram calculation, baseline estimation, flat-field removal, coherence calculation, adaptive filtering, refined baseline estimation, phase transformation deformation, and finally, deformation field generation.

3、 Installation Diagram

4、 Technical Parameters

5、 Imaging Image