What influences the decrease of power in multi-body scattering compared to single point scattering?

The influence of the beam volume that includes more scatterers is a primary factor in the decrease of power during multi-body scattering compared to single point scattering. When radar waves encounter multiple scatterers, the waves can scatter in various directions due to the different sizes, shapes, and orientations of those scatterers. This results in a more diffused scattering pattern, leading to less energy returning to the radar receiver compared to the more focused return from a single, point-sized scatterer.

In multi-body situations, the interactions between multiple scatterers can cause destructive interference and scattering loss. The complexity of the scattering environment increases as more scatterers are included within the beam volume, which can diminish the strength of the return signal received by the radar.

Factors such as increasing scatterer size, radar frequency, and distance from the antenna can also affect radar performance but do not specifically address the decrease in power attributed to the increased complexity of multibody scattering directly. The interaction within a volume containing multiple scatterers is key to understanding why the return power decreases, making the inclusion of more scatterers within the beam volume particularly influential.