go to this website, you can get sample data of alos palsar SAR data http://www.eorc.jaxa.jp/ALOS-2/en/doc/sam_index.htm

Thank you Mr Muthukumarasamy

But these samples are not for my study area

Thank you Mr Ayman

I checked the ESA, is not free

Hello, quad-pol data from Radarsat-2 and ALOS-1/2 are not freely available yet, except for a few test sites.

But if you need to play with such data sets, try AIRSAR and UAVSAR data repository.

Thank you Mr Saran

I checked this link and found no data available for my study area

https://vertex.daac.asf.alaska.edu/#

Can you give me another source that has AIRSAR and UAVSAR data of my country - Iraq?

Hello,

Unfortunately, AIRSAR and UAVSAR data are not available for your country - Iraq

Hi Zaidoon,

have you tried to look at the Alaska Satellite Facility? There you can find a wide collection of data from 1996 to present days. If I am not wrong, it should include also some RADARSAT and ALOS data. Below, the link

https://www.asf.alaska.edu/

There might be some restriction due to your home country. Good luck!

Hi Virginia,

I've tried it before

There is no quad data, just dual-polarization

Thanks for your answers

Dear Zaidoon

If you could explain the proposed research objectives or aim. I may help you to get the possible alternate resources.

Regards,

Jahangir Khan