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<p>A weather radar signal simulator that produces an output consisting of a vector of I and Q values  representing the radar return permits investigation of the performance of different estimators for the weather signal  parameters and their sensitivity when varying radar parameters and precipitation models. Although several  empirical statistical models are available to describe precipitation behavior, the creation of a physical model  enables adaptation to actual data (e.g. rain rate, wind shears) thereby making it possible to apply and examine  different scanning schemes, especially rapid scanning schemes. A physical model allows gradual improvements to  realism to study the effects on the radar return for different phenomena. A Weather Radar Signal Simulator has  been developed in MATLAB. Several different functionalities have been implemented allowing for stepped  frequency, multiple PRFs, pulse compression using a chirp, and variation of both weather and radar input  parameters. Post processing capabilities include autocorrelation and FFT (for single PRF only); estimation of  weather parameters such as reflectivity factor, Z; average doppler, radial velocity, and velocity spread;  pedagogical plots including a Phasor plot of phase change over time and a velocity histogram, instantaneous  observed reflectivity and power for each pulse over time.
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<br>Subjects: Mathematical models; Weather; Wind shear; Systems engineering</div>
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Schroder, Ulf P.</div>
Internet Archive identifier