On the application of MUSCAT to a ground-based dual-Doppler radar system

The multiple-Doppler synthesis and continuity adjustment technique (MUSCAT) . developed for at least a pair of Doppler observations, is based on both a simultaneous resolution of the equations relating the wind components to t he measured radial velocities and of the continuity equation, and the use o f second-order derivatives in the cost function. It has been developed to s olve the geometrical limitations that result from a dual-Doppler radar conf iguration, and has been successfully applied to airborne radar equipped for a fore-aft scanning. This paper intends to show the performance of this me thod in the case of a differing geometry from a ground-based dual-Doppler r adar system, using simulated Doppler data deduced from an analytical wind f ield. It is shown that the constraint on the second-order derivatives allow s to also obtain reliable wind vectors outside the Doppler lobes., i.e., in regions along the radar baseline where ill-conditioned analysis occurs.