In order to circumvent the treaty to not weaponize space, the USA plans to build "Hotels" in space.
Unfortunately I'm not familiar with how humidity affects radar. But one option is to do is include humidity readings with the violation. Then do a large amount of testing at various speed/humidity to produce a error margin look-up for a given humidity. (this may result in the minor offenders to escape the fines(speed is within the error margin of speed limit), but you will get the major offenders)
Well unless the source code for the system(s) that you purchase is open source you can't prove it one way or the other. Only other choice is to buy it from a reputable vendor.