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EXISTING SYSTEM

PROPOSED SYSTEM

EXISTING  CONCEPT:

·         A time series synthesizer is evaluated based on SDEs assuming that rain attenuation follows the lognormal distribution and that the rate of change of rain attenuation is proportional to the instantaneous value of rain attenuation.

PROPOSED CONCEPT:

·         By the application of SDEs it is shown that rain attenuation can be also described with the Weibull distribution. The basic assumptions are that first-order statistics of rain follow Weibull distribution and that the rate of change of rain attenuation is proportional to the instantaneous value of rain attenuation.

         Hitting time statistical properties have been used for the development of an analytical method for the calculation of the rain attenuation dynamic parameter

EXISTING TECHNIQUE :

·         Maseng- Bakken (M-B) model is used.

PROPOSED TECHNIQUE:

         Weibull distribution technique is used.

TECHNIQUE DEFINITION:

·         The long-term distribution of rain attenuation is log-normal, respectively the mean m and the standard deviation σ of its natural logarithm.

TECHNIQUE DEFINITION:

·         It was found that the RMS value of the relative error was 13.47% for Weibull distribution and 13.8% for lognormal distribution.

DRAWBACKS:

·         Rain attenuation is just assumed as lognormal distribution.

ADVANTAGES:

·         System is analytical.Gives much better prediction than other prediction models.