SAR spotlight raw signal database For practicing spotlight processing, i am looking for I/Q baseband signal from a SAR airborne or spaceborne system. In my research I have only found processed image from :

eoweb geoportal https://eoweb.dlr.de/egp/
Airbus Terrasar X https://www.intelligence-airbusds.com/imagery/constellation/

Could anyone give me a link for raw I/Q signal (and associated metadata)?
Thanks a lot
This website offers phase history (match filtered) data: https://www.sdms.afrl.af.mil/index.php?collection=gotcha. There are other datasets on the same website, some of which may have raw I/Q.