CROSS CORRELATIONS AND CROSS SPECTRA FOR SPACED ANTENNA WIND PROFILERS .2. ALGORITHMS TO ESTIMATE WIND AND TURBULENCE

In part 1 of this paper we developed analytic relationships linking th e cross correlation and cross spectrum of the echoes from a spaced ant enna system to the properties of a horizontally isotropic scattering m edium (e.g., clear-air refractive index irregularities) and the backgr ound flow (e.g., laminar or isotropic turbulent flow). Using these ana lytic expressions, in the present paper, part 2, we construct algorith ms (for both the time domain and frequency domain) for extracting unbi ased wind and turbulence estimates. We derive a condition under which one can ignore turbulence when computing winds from the time delay to the peak of the cross-correlation functions. We show profiles of the h orizontal wind and turbulence based on these algorithms using data fro m the unique 33-cm wavelength spaced antenna wind profiler developed b y the National Center for Atmospheric Research.