Doppler radar imaging is a remote sensing method that combines conventional radar reflectivity measurements with Doppler-shifted phase or frequency information to retrieve both spatial structure and line-of-sight velocity of targets, typically hydrometeors or atmospheric scatterers. By transmitting coherent microwave pulses and analyzing phase changes between successive returns, it quantifies radial velocities and turbulence, enabling derivation of wind fields, storm dynamics, and microphysical processes. Advanced implementations, such as pulse-pair processing and dual-polarization Doppler techniques, enhance sensitivity to motion, particle type, and size distributions, supporting quantitative precipitation estimation, severe weather diagnosis, and assimilation of high-resolution kinematic data into numerical weather prediction models.
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