Is there anybody un this forum who can shed some light on how modern radar equipment works? On the old fashoned CRT design you could simply adjust brightness to get rid of all the noise on the screen (birds etc.). How is sensitivity adjusted today? How is information filtered (i.e. are single returns filtered automatically by the software, because they are obviously noise, and are only repetitatve returns moving within a certain reasonable speed range shown)?
What exactly is recorded? Raw data? Displayed Data? Analyzed, filtered Data? Can we (the civilians...) run special analysis software on that data to scan through it for interesting details?