Coverage map, bistatic system

Thanks to the addition of two bistatic receivers, we can now obtain dual- or triple- Doppler wind measurements over a few thousand square kilometers, with particularly good coverage in the neighborhood of Montreal's Trudeau Airport.

Flow derived by bistatic system

In this Doppler velocity example as measured by the scanning radar (located beyond the upper-left corner), one can see what looks like a typical mesocyclone signature near the bottom of the 40-km by 40-km image. A look at the wind patterns measured using the scanning radar and the first bistatic receiver however reveals that the circulation in that region is not closed: while the wind does a 180 degree turn from the NW to the SE, the loop is not completed. Horizontal sections made at other altitudes (as well as vertical velocity measurements) suggest the presence of a very complex 3-D circulation.