Noise Immunity of UWB Positioning System on ANN

The stability of work of ultrawideband positioning system with the use of impulse form classification is analyzed at presence of noise in received signal. The model of the two-dimensional system contains two bow-tie antennas excited by short Gaussian pulses. The electromagnetic problem is solved by FDTD method. The deformation of time form of received ultrashort pulses of electromagnetic field at different angles and different duration of radiated pulses of each antenna are recognized by artificial neural network or correlation method. The noise immunity of these approaches is compared for different levels of noise by numerical simulations of a set of noise realizations.