I am currently reading some relevant papers for a proposed geotechnical monitoring project using InSAR. I have a general knowledge of InSAR application for such problem, and would like to have an in-depth understanding of the entire process. As of now, I would like to know your opinion:
1. What is the most common/recommended InSAR technique for geotechnical monitoring (i.e. landslide monitoring, pavement settlement monitoring)?
2. What criteria do I consider for the type of data set?
3. What appropriate pack of computer software do I need to install and learn to execute the tasks?
3.1 Software for pre-processing of SAR images
3.2 Software for interferometric stack processing
3.3 Software for interferometric analysis
3.4 Miscellaneous software that I could use after obtaining the test results
4. Where do I access and download free SAR images?
5. What type of SAR images do I need to download for interferometry?
6. What should be my desktop PC specifications? I am planning to purchase one for this purpose.
My apologies for asking a bunch of questions. I hope these make sense at all. Your thoughts will be greatly appreciated.
Thank you in advance!
We recently purchased sarproz license and completed the training by the author himself. I can say that this software can do the job at lightning speed. :D
ANSWERS TO YOUR QUESTIONS:
1. What is the most common/recommended InSAR technique for geotechnical monitoring (i.e. landslide monitoring, pavement settlement monitoring)?
- multitemporal insar
3. What appropriate pack of computer software do I need to install and learn to execute the tasks?
3.1 Software for pre-processing of SAR images
3.2 Software for interferometric stack processing
3.3 Software for interferometric analysis
- sarproz can do everything with ease.
3.4 Miscellaneous software that I could use after obtaining the test results
- google earth, qgis
4. Where do I access and download free SAR images?
sentinel 1 (https://scihub.copernicus.eu/)
5. What type of SAR images do I need to download for interferometry?
- SLC images
6. What should be my desktop PC specifications? I am planning to purchase one for this purpose.
- we are using a virtual machine with 16Gb ram and 8 cores and it can do the job. less ram means just a little more waiting time but should not be significant.
Hi,
Here are some references that may be helpful for you:
- Mohammadimanesh, F., Salehi, B., Mahdianpari, M., Brisco, B., & Motagh, M. (2018). Wetland water level monitoring using interferometric synthetic aperture radar (InSAR): A review. Canadian Journal of Remote Sensing, 1-16.
- Bellotti, F., Bianchi, M., Colombo, D., Ferretti, A., & Tamburini, A. (2014). Advanced InSAR techniques to support landslide monitoring. In Mathematics of Planet Earth (pp. 287-290). Springer, Berlin, Heidelberg.
- Lazecky, M., Perissin, D., Bakon, M., de Sousa, J. M., Hlavacova, I., & Real, N. (2015, March). Potential of satellite InSAR techniques for monitoring of bridge deformations. In 2015 Joint Urban Remote Sensing Event (JURSE) (pp. 1-4). IEEE.
Hi,
You can look at the www.sarproz.com or contact me for more details and a trial version.
We recently purchased sarproz license and completed the training by the author himself. I can say that this software can do the job at lightning speed. :D
ANSWERS TO YOUR QUESTIONS:
1. What is the most common/recommended InSAR technique for geotechnical monitoring (i.e. landslide monitoring, pavement settlement monitoring)?
- multitemporal insar
3. What appropriate pack of computer software do I need to install and learn to execute the tasks?
3.1 Software for pre-processing of SAR images
3.2 Software for interferometric stack processing
3.3 Software for interferometric analysis
- sarproz can do everything with ease.
3.4 Miscellaneous software that I could use after obtaining the test results
- google earth, qgis
4. Where do I access and download free SAR images?
sentinel 1 (https://scihub.copernicus.eu/)
5. What type of SAR images do I need to download for interferometry?
- SLC images
6. What should be my desktop PC specifications? I am planning to purchase one for this purpose.
- we are using a virtual machine with 16Gb ram and 8 cores and it can do the job. less ram means just a little more waiting time but should not be significant.
We also recently purchased sarproz license. I also can say that this software absolutely does the job at lightning speed.
Thank you.
Hi, SARproZ (www.sarproz.com) is far the best software to help you understand the technique, processing and all related problems. Sentinel-1 data are available from https://scihub.copernicus.eu. Feel free to contact us with any questions https://insar.space/contact-us/
Hi I reccomend you one of my paper Article Application of DInSAR Technique to High Coherence Sentinel-1...
where we use only free-available data and software!
Dear Pia,
In order to accomplish what you have written, a fundamental thing is to say is that you need a software that can meet your requirements. I personally recommend you to use SARPROZ: www.sarproz.com as it is fast in processing InSAR data and absolutely versatile and well structured.
Thank you so much to all your replies! I really appreciate it. I've already started InSAR processing, DInSAR to be more specific, using SNAP and SNAPHU for phase unwrapping.
Now, I am facing a problem about the consideration of atmospheric effects on my estimates. In most reference papers I have and tutorial kit, its effect was actually neglected. And in some papers, they've mentioned its importance to get better displacement estimates.
I just want know your opinion about this matter. For example, in what situation do we usually neglect atmospheric effects, and when do we consider it? I know I can find answers in the literature, but I want to know it here from you guys.
as far as my understanding over the SAR interferometry technology, for advanced DInSAR processing (PSI), tool like SqueeSAR or based on identical approach would be the best option. for conventional DInSAR processing, you may think over Gamma SAR Interferometry package.
Have you done a comparison between these softwares?
Any published studies? If you have some comparative results? Please share it. It will be very helpful for everyone to know the difference.
Hi Ryan Angeles Ramirez , we also used SARPROZ for city subsidence and validated the results with leveling. It worked very well. You can read more here:
https://www.mdpi.com/2072-4292/11/23/2764
Good luck
Faramarz
Hi, Vishal Mishra .
I've used SNAP and SARPROZ and did apply the two for landslide analysis. From the time series results, seems that SNAP overestimated the displacements compared to that of SARPROZ. Unfortunately, we haven't published an article about it as the team wants to incorporate other techniques to support the InSAR outcomes.
Hi, Faramarz Nilfouroushan .
Thank you for sharing your paper. Yes! I agree that SARPROZ really works well in terms of processing huge dataset. We've used it also for free for subsidence analysis. And it gave satisfactory results. Just waiting for my supervisor's go signal for submitting the paper we've drafted.
You can go for PS technique for infrastructure monitoring. I would say you can go fopr SARProz.
For opensource SNAP and StaMPS you can try.
Sentinel-1 data is freely available.
You would need 8GB RAM or more, At least have 4 TB of Hard disk. Therefore go for high end PC like (seventh generation) i7 and i9
@Vishal Mishra
I'd like to know which processor has the capability of running PSI mechanims over 50+ images stacks fast and without a problem. Intel i5 9th gen or Ryzen 5 hexacore processors?
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