Search found 27 matches

by john6444
Thu Apr 16, 2026 10:10 pm America/New_York
Forum: Home
Question: SWOT L2 Discharge Estimates
Replies: 3

Re: SWOT L2 Discharge Estimates

Got it and thanks for your reply!
by john6444
Sun Mar 29, 2026 3:46 am America/New_York
Forum: Home
Question: SWOT L2 Discharge Estimates
Replies: 3

Re: SWOT L2 Discharge Estimates

Just also interested in SWOT Level 2 discharge estimation and meeting the same issue.

Cheers,
Jw
by john6444
Mon Mar 16, 2026 10:08 pm America/New_York
Forum: Home
Question: NISAR satellite backscatter coefficient image generation
Replies: 9

Re: NISAR satellite backscatter coefficient image generation

Thanks again for your help!

Cheers,
Jw
by john6444
Thu Mar 12, 2026 11:17 pm America/New_York
Forum: Home
Question: NISAR satellite backscatter coefficient image generation
Replies: 9

Re: NISAR satellite backscatter coefficient image generation

Thank you for your detailed explanation and code example of backscatter coefficient image generation from GSLC product. I will give it a try in these days.

Thanks again for your kindness and help!

Cheers,
Jw
by john6444
Tue Mar 10, 2026 11:50 pm America/New_York
Forum: Home
Question: NISAR satellite backscatter coefficient image generation
Replies: 9

Re: NISAR satellite backscatter coefficient image generation

Thanks again for your help! I notice that current NISAR Beta Geocoded Polarimetric Covariance Product (Version 1) is not intended for use in scientific research, thus I am just gaining familiarity with it.

Have a nice day!

Cheers,
Jw
by john6444
Mon Mar 09, 2026 10:02 pm America/New_York
Forum: Home
Question: NISAR satellite backscatter coefficient image generation
Replies: 9

Re: NISAR satellite backscatter coefficient image generation

Hi Heidi Kristenson,

Thank you for your help! I will dig into GCOV products.

Cheers,
Jw
by john6444
Sat Mar 07, 2026 7:37 am America/New_York
Forum: Home
Question: NISAR satellite backscatter coefficient image generation
Replies: 9

NISAR satellite backscatter coefficient image generation

Dear Sir or Madam, Recent launched NISAR satellite gives a new insight of earth surface dynamics by L-band and S-band SAR sensors. I have checked the public data products released by NASA Earthdata and Alaska Satellite Facility, and find that backscatter coefficient data are not included. Therefore,...
by john6444
Tue Jan 20, 2026 11:10 am America/New_York
Forum: Home
Question: Question: SWOT pixel cloud data product misclassify cropland as water
Replies: 11

Re: Question: SWOT pixel cloud data product misclassify cropland as water

Hello, any idea about this issue?
by john6444
Thu Jan 15, 2026 10:40 am America/New_York
Forum: Home
Question: Question: SWOT pixel cloud data product misclassify cropland as water
Replies: 11

Re: Question: SWOT pixel cloud data product misclassify cropland as water

Thanks for your explanation. I just utilized python matplotlib package for plotting, the same with yours. I think the underlying reason that you cannot find matching pattern with mine is incorrect recognization of geographic coordinate unit for visualization in the bottom figure. Please note that th...
by john6444
Wed Jan 14, 2026 12:21 pm America/New_York
Forum: Home
Question: Question: SWOT pixel cloud data product misclassify cropland as water
Replies: 11

Re: Question: SWOT pixel cloud data product misclassify cropland as water

Thanks for your help and detailed description. Take a deep look into your all illustrations, I find that your last attchment plot (the bottom one) is filtered by "water_frac_uncert" < 0.1, not "water_frac_uncert" < 1.0 (mentioned words in your figure is right but your description...