A space-based wind sounder will produce a pattern of shots that will provide bi-perspective samples within 100x100 km target areas. The ground-based data from July 10, 1992, 1623Z, was processed to yield shot combinations that are similar to those that will be achieved from space. Wind components were calculated for a range of bi-perspective shot pairs and compared to the true components derived from the sine fitted poly-pulse pair VAD. SWA computes the distribution of errors for the U, V and total speed errors for unfiltered range gates 8-14 (high SNR) and for filtered range gates 30-31 (cirrus deck).
On May 27, 1993, the MSFC lidar ran a time series of scans (10 VADS) with an elevation angle of 45 degrees. SWA processed all ten VADS through the SWA ground-based Doppler lidar data processor. Each data set was noise filtered and least squares fit to a sine wave. Wind components were calculated for a range of bi-perspective shot pairs and compared to the true components derived from the sine fitted poly-pulsed pair VAD. The following illustrate the distribution of errors for the U, V and total speed errors for unfiltered range gates 10-15 (high SNR).
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