May be you want to access TerraSAR-X imagery for the moving objects detection. Please have a look at the following links:

ESA provides the sample imagery:

https://earth.esa.int/web/nest/downloads/sample-data

AIRBUS is also a significant option to get some data:

http://www.intelligence-airbusds.com/en/23-sample-imagery

http://terrasar-x-archive.infoterra.de/

Hope this helps.

Thanks a lot @ Jibran Khan for valuable suggestions..

Hello, what kind of mobile targets are you interested in detecting? I did a review project for my remote sensing class a few years ago on ship detection using SAR and optical methods of remote sensing. Please find it attached. If you are interested in in detecting smaller faster targets (such as aircraft), I would recommend looking at using automatic dependent surveillance broadcast (ADS-B) signals to either verify detection or to establish a false detection rate, similar to how AIS has been used for ship (wake) detection.

Here is the link to 'how to order Radarsat2 data': http://www.asc-csa.gc.ca/eng/satellites/radarsat2/order-contact.asp

Here is some sample data:

http://mdacorporation.com/geospatial/international/satellites/RADARSAT-2/sample-data

Best regards,

Alex

Thank you Alex sir..