During the so called speed speed study the MP used Doppler and Laser.
However I don't think you need to worry. I have been informed by people in the know at this forum that the only thing that will work is "
military style naval radar with target designation and tracking capabilities".
Here is a link with more information and a full explanation about why radar will not work.
http://www.winnipesaukee.com/forums/...ead.php?t=1820