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Asian Journal of Scientific Research

Year: 2008 | Volume: 1 | Issue: 3 | Page No.: 203-212
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Authors

G.H. Reddy

Y. Venkatarami Reddy

S.N. Reddy

Keywords

Research Article

The Effect of β in Kaiser Window on the SNR of MST Radar Signals

G.H. Reddy, Y. Venkatarami Reddy and S.N. Reddy
In this study, the effect of parameter β in Kaiser Window on the SNR values of MST radar echoes is investigated. Use is made of six sets of multibeam observations of the lower atmosphere made by the Indian Mesosphere-Stratosphere-Troposphere (MST) radar. The effects of data weighting with the variation in the parameter β of the Kaiser window applied to the inphase and quadrature components of the radar echo samples prior to Fourier transformation are presented. It is observed that the increase of β, increases the SNR in the higher bins and a good improvement is reported. At the same time in the lower bins a slight decrease in SNR is observed. From these observations, it is concluded that the Kaiser window can be used with β greater than or equal to 6, to taper the data for spectral analysis in place of a rectangular window. The results also show that, the improvement of SNR of noisy data due to the effect of side lobe reduction and demands for the design of optimal windows.
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