Extract the backscatter coefficient value

[yang121]

How to quickly extract the backscatter coefficient value of the specific pixel in multiple remote sensing images, the pre-processing has been completed. Thank you！

[qglaude]

Radiometric & Geometric Correction Workflow

for SLC data I would suggest

1. Calibration to Beta0
2. TOPSAR Deburst
3. Apply Orbit file
4. (Speckle filtering)
5. Radiometric terrain flattening
6. Range Doppler Terrain Correction

If you don’t need the phase information you can also download it as a GRD product and only apply the following:

1. Thermal noise removal
2. Apply Orbit file
3. Calibration to Beta0
4. (Speckle filtering)
5. Radiometric terrain flattening
6. Range Doppler Terrain Correction

or (if you don’t have much topography):

1. Thermal noise removal
2. Apply Orbit file
3. Calibration to Sigma0
4. (Speckle filtering)
5. Range Doppler Terrain Correction

You make a graph of this chain. Then you use it in batch processing

[yang121]

Thank you！You answered my last question, I have already done the pre-processing. But I don’t know how to extract the backscatter coefficient from my designated point. I have multiple remote sensing pictures.I want to extract the data at once.

[ABraun]

Please have a look at the answer of marpet here: How to extract value from sentinel 3 OLCI maps for a specific point.?

Maybe, the time-series tool is also interesting to you: SAR Time-series Analysis tool"
You find the required steps here: Time Series (Temporal) of NDVI