Identifying correct angular parameters in Sentinel-1 metadata for GNSS-to-LOS projection
Posted: Tue Dec 10, 2024 12:54 pm America/New_York
Context: I am working on integrating GNSS and SAR data processing, specifically trying to project 3D GNSS displacements into Sentinel-1 Line-of-Sight (LOS) direction.
Question: I need to identify the correct angular parameters in Sentinel-1 metadata that represent:
1. The incidence angle
2. The azimuth look angle
These parameters are essential for accurate geometric projection of GNSS measurements into radar geometry. However, I'm finding multiple fields in the Sentinel-1 metadata that could potentially represent these angles, creating ambiguity in which values should be used for the projection.
Technical details:
- Data product: Sentinel-1 SLC
- Processing task: GNSS to SAR LOS projection
- Required parameters: Incidence angle, azimuth look angle
- Current challenge: Ambiguity in metadata field interpretation
Could you please help identify which specific metadata fields in Sentinel-1 products should be used for this geometric transformation?
Question: I need to identify the correct angular parameters in Sentinel-1 metadata that represent:
1. The incidence angle
2. The azimuth look angle
These parameters are essential for accurate geometric projection of GNSS measurements into radar geometry. However, I'm finding multiple fields in the Sentinel-1 metadata that could potentially represent these angles, creating ambiguity in which values should be used for the projection.
Technical details:
- Data product: Sentinel-1 SLC
- Processing task: GNSS to SAR LOS projection
- Required parameters: Incidence angle, azimuth look angle
- Current challenge: Ambiguity in metadata field interpretation
Could you please help identify which specific metadata fields in Sentinel-1 products should be used for this geometric transformation?