1. An ultra-wide band (UWB) radio frequency (RF) interferometry unit comprising: an UWB RF pulse generator configured to generate UWB RF pulses having specified pulse characteristics, at least one UWB RF transmitting antenna configured to receive the generated UWB RF pulses and transmit corresponding UWB RF signals at an environment including at least one human, at least one UWB RF reception antenna configured to receive echo signals from the environment, an UWB RF interferometer configured to deliver the received echo signals for processing, and an environmental clutter cancellation module configured to filter out static non-human related echo signals; wherein at least one of: the at least one UWB RF transmitting antenna and the at least one UWB RF reception antenna, comprises a Synthetic Aperture Antenna Array (SAAA), wherein the SAAA comprises a plurality of linear baseline antenna arrays (“baselines”), and wherein the processing of the delivered echo signals is carried out by (i) a human state classifier configured to identify a most probable fit of a human current state that represents an actual human instantaneous state, and to find a best match to a codebook which represents the current state as being a set of human instantaneous conditions/situations which is based on a quantized feature status; and by (ii) an abnormality situation pattern recognition module configured to apply a pattern recognition based decision function to an identified states patterns and determine whether an abnormal physical event has occurred to the at least one human in the specified area.