UAVSAR Data Consultation

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csu_niuniuniu
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UAVSAR Data Consultation

by csu_niuniuniu » Tue Oct 31, 2023 1:55 am America/New_York

I'm writing to ask the UAVSAR data information in ASF data search webset (https://search.asf.alaska.edu/). When I search for UAVSAR data in Mondah, Gabon site acquired on 03/06/2016, there are 18 scenes. Such as, UA_Mondah_27080_16013_001_160306_L090_CX_01, UA_Mondah_27080_16013_001_160306_L090_CX_02...UA_sixtym_27082_16013_009_160306_L090_CX_01...What are the naming rules for the scenes? What's the difference between CX_01 and CX_02?
In UAVSAR JPL website (https://uavsar.jpl.nasa.gov/cgi-bin/data.pl), the UAVSAR data in Mondah, Gabon site acquired on 03/06/2016 is named Mondah_TM270, consists of 9 scenes. Are the data in this two websites the same? What the differences between these 18 scenes and 9 scenes?
Additionally, is there any technical reports or documents of 2016 NASA AfriSAR campaign?

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ORNL - mthornton
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Re: UAVSAR Data Consultation

by ORNL - mthornton » Tue Oct 31, 2023 6:23 am America/New_York

Hello,
Additional AfriSAR Campaign data and related information can be found at the ORNL DAAC.
Michele Thornton
ORNL NASA Distributed Active Archive Center
Oak Ridge National Laboratory
thorntonmm@ornl.gov

ASF - bhauer
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Re: UAVSAR Data Consultation

by ASF - bhauer » Tue Oct 31, 2023 8:41 pm America/New_York

UAVSAR data available from ASF have been processed at JPL and sent to ASF for distribution. No further processing is done once a product is received at ASF. The only change made is to add a UA_ prefix to a JPL product name.

Documentation for the UAVSAR products is available from JPL, and this includes the file naming schema: For the PolSAR products you included as examples, the _01 and _02 part of the filename indicates there are two processing versions available for the same scene.

The way the JPL website displays the products for a scene and the way ASF bundles the products is different, but the number of products is the same.
Bill Hauer
Alaska Satellite Facility DAAC
User Support Office
uso@asf.alaska.edu

csu_niuniuniu
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Re: UAVSAR Data Consultation

by csu_niuniuniu » Wed Nov 01, 2023 4:27 am America/New_York

Thank you for your documentation. Now I know the numbers 01 and 02 indicate the processing version number, the first/second interation of processing. For example, if I use the data 01 or 02 to do the PolSAR forest parameter inversion, will the experimental results the same? Does the processing version I choose effects the inversion performance?

ASF - bhauer
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Re: UAVSAR Data Consultation

by ASF - bhauer » Wed Nov 01, 2023 9:54 pm America/New_York

Newer versions should reflect improvements/enhancements/corrections to the processing algorithm. I would suggest that you pick the latest version and only use these data for your analysis.
Bill Hauer
Alaska Satellite Facility DAAC
User Support Office
uso@asf.alaska.edu

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