Frequently Asked Questions

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Question:
What is the conversion to get from ALI Level 1 to a Level 0?

Answer:
Theoretically it should be possible to get to L0 using the formula. However the calibration coefficients were applied before the leaky pixel correction. Because the leaky pixels corrections vary from scene to scene, the response should be customized for each.

The formula for converting to Level 0:

Level 0 = (L1R/(response x scaling factor)) + offset

Please note that due to leaky pixel correction applied after the calibration process it is not possible to get back to a true Level 0 product.