Nice. The down-range focus on the fenceposts is very good. Cross-range focus isn&#x27;t as good, still impressive for a such a low-cost system. It&#x27;d be very interesting to see some images of a more target-rich environment.<p>Radar, SAR, and especially passive multistatic SAR are technologies that I&#x27;m sure we&#x27;re going to see more of in future. Passive SAR (or transmitter-of-opportunity SAR) can be computationally expensive, but pieces seem to be there to build something that works really well.