Search found 29 matches

by ASF - bhauer
Tue Oct 31, 2023 8:41 pm America/New_York
Forum: Home
Question: UAVSAR Data Consultation
Replies: 4

Re: UAVSAR Data Consultation

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 includ...
by ASF - bhauer
Mon Oct 02, 2023 6:37 pm America/New_York
Forum: Home
Question: Ship Detection Project Share Using ASF API
Replies: 1

Re: Ship Detection Project Share Using ASF API

Hello Drew, Thanks for sharing the results of your project -- we're always eager to learn how data downloaded from ASF are being used. We have a team that has investigated using SAR for ship detection, and I'm sure they'll find your work extremely interesting. I'm anxious to share this with them. Sh...
by ASF - bhauer
Sat Sep 23, 2023 4:48 pm America/New_York
Forum: Home
Question: ASF // search API broken ?
Replies: 3

Re: ASF // search API broken ?

ASF searches were not working consistently yesterday, September 21. The issue was resolved overnight and functionality has been restored.

Thank you for your patience!

-Bill Hauer
by ASF - bhauer
Tue Aug 15, 2023 12:18 pm America/New_York
Forum: Home
Question: Hy3P vertical product displacement unit
Replies: 2

Re: Hy3P vertical product displacement unit

The README file included in each HyP3 InSAR product package is a very good source for this kind of information.
by ASF - bhauer
Tue Aug 15, 2023 12:06 pm America/New_York
Forum: Home
Question: Hy3P vertical product displacement unit
Replies: 2

Re: Hy3P vertical product displacement unit

Displacement values are given in meters.

Thank you,
Bill Hauer
by ASF - bhauer
Mon Jul 10, 2023 5:49 pm America/New_York
Forum: Home
Question: InSAR data processing
Replies: 1

Re: InSAR data processing

The OpenScienceLab team will be able to troubleshoot the problem you are having. Please submit an online request describing the issue, and someone will respond quickly:
https://asf.alaska.edu/services-osl-trouble-shooting/

Thank you,
Bill Hauer
by ASF - bhauer
Thu Apr 27, 2023 3:23 pm America/New_York
Forum: Home
Question: Sentinel-1 Frame Numbers
Replies: 1

Re: Sentinel-1 Frame Numbers

There is no reference map available for Sentinel-1 ASF frames. Because of the dependence on time instead of a specific set of geographic coordinates when assigning frame numbers, "frame drift" can occur over time, where the frame number over the same spot may change. I recommend using Vert...
by ASF - bhauer
Wed Apr 05, 2023 12:19 pm America/New_York
Forum: Home
Question: I NEED 5M RESOLUTION
Replies: 1

Re: I NEED 5M RESOLUTION

Please correct me if I'm mistaken, but I assume you are referring to the modified DEM file that is included with the ALOS PALSAR RTC product bundle. This file is a copy of an open-source DEM that was downloaded, modified, and used to perform radiometric terrain correction (RTC) on an ALOS PALSAR gra...
by ASF - bhauer
Thu Nov 17, 2022 3:04 pm America/New_York
Forum: Home
Question: Where does a novice user find 3d images?
Replies: 1

Re: Where does a novice user find 3d images?

If you are referring to the DEMs included with the ALOS PALSAR RTC products from ASF, it is important to note that they are NOT generated from ALOS PALSAR imagery. They are the DEMs that were used for RTC processing, which were simply mosaicked and clipped from publicly-available DEMs, such as SRTM ...