https://www.earthdata.nasa.gov/learn/backgrounders/what-is-sar
https://nisar.jpl.nasa.gov/resources/sar-education-resources/
https://www.cranfield.ac.uk/facilities/ground-based-sar-laboratory#
https://nisar.jpl.nasa.gov/resources/sar-education-resources/
https://nisar.jpl.nasa.gov/resources/sar-education-resources/
http://radar-course.org/radar%20se%20Lecture%2018%20B.html
https://www.sfu.ca/engineering/research/research-labs/sarlab.html
https://www.sfu.ca/engineering/research/research-labs/sarlab/the-group.html
https://www.permafrostnet.ca/
https://www.cranfield.ac.uk/facilities/ground-based-sar-laboratory#