precipitation at spatial scales say and or alternatively first and second order statistical information about precipitation for scales and are available to the communication systems engineer but the realistic planning and design of systems

This paper presents a new comprehensive spacetime model of rainfall rate and its associated rainfield synthesizer called GRAM (Grid Rain Attenuation Model). A great deal of care is placed on explicitly including the rain/no rain condition so that the planning and simulation of high frequency radio wave communication systems can be achieved with full consideration of rain intermittency effects. We also look in some details at the modification of first and second order statistical descriptions of the rain precipitation rate upon application of space and time integration to point rainfall rate.