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Orbital error generation is too high? #12

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jesscag opened this issue Jun 13, 2022 · 1 comment
Open

Orbital error generation is too high? #12

jesscag opened this issue Jun 13, 2022 · 1 comment

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@jesscag
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jesscag commented Jun 13, 2022

After generating a swath based on the example and using the build in AVISO sample data I noticed that the orbital noise added to the swath is far too high.
image
The left hand image is the 'truth' from the product.simulated_true_ssh_karin and the right hand image is karin SSH with all errors/noise generated product.ssh_karin
These swaths were generated using:

configuration = swot_simulator.settings.template(python = True) 
parameters = swot_simulator.settings.Parameters(configuration) 
parameters.ssh_plugin = swot_simulator.plugins.ssh.AVISO(swot_simulator.DATA) 

After removing the orbital noise error and utilizing the corrected roll the swath looks much more realistic
image
Where the left is truth and the right is product.ssh_karin
These swaths were generated using:

configuration = swot_simulator.settings.template(python = True) 
parameters = swot_simulator.settings.Parameters(configuration) 
parameters.ssh_plugin = swot_simulator.plugins.ssh.AVISO(swot_simulator.DATA) 
parameters.noise = ['Altimeter', 'Karin', 'BaselineDilation', 'WetTroposphere', 'Timing', 'CorrectedRollPhase'] 

When looked at alone, the swath with only orbital error looks like:
image

Is it possible I am implementing this error wrong or is the signal from this error too strong?
Thanks!

@Lindsey-D
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I also encountered the same problem, and after removing the orbiral error, the roll error is still quite large. How do you solve this?

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