SOFA (SHARAD Open Focusing Attempt) is an open-source focuser for SHARAD radar sounder data acquired on Mars. SOFA is written in python v3 and, besides standard raw data processing, allows the generation of radargrams with different squint angles. Using this feature it is possible to obtain new products for more detailed analyses of SHARAD data.
Check the project and the code here :
by Adamo Ferro
The following paper features extensive use of SOFA:
Squinted SAR focusing for improving automatic radar sounder data analysis and enhancement
International Journal of Remote Sensing