Moving target detection using a two-dimensional folding approach

摘要

A system and method for discrimination and identification of a target including: receiving a radar return signal including target information and clutter information; determining a two-fold forward or forward-backward data matrix from the received signal, using a multi-dimensional folding (MDF) process; computing singular values of the two-fold forward or forward-backward data matrix; using the computed singular values to determine a noise power level of the radar return signal; determining the number of scatterers in the radar return signal according to a predetermined threshold value above the noise power; estimating complex Doppler and azimuth frequencies of each scatterer from the determined number of scatterers using the MDF process; determining dispersive scatterers and non-dispersive scatterers using the estimated Doppler and azimuth complex frequencies of each scatterer; and distinguishing the target information from the clutter information, according to the determined dispersive scatterers and non-dispersive scatterers.

主权项

1. A computer implemented method for discrimination and identification of a target, the method comprising:
receiving a radar return signal including target information and clutter information, by a radar receiver; determining, by a processor, a two-fold forward or forward-backward data matrix from the received signal, using a multi-dimensional folding (MDF) process; computing, by the processor, singular values of the two-fold forward or forward-backward data matrix; using the computed singular values, by the processor, to determine a noise power level of the radar return signal; determining, by the processor, the number of scatterers in the radar return signal according to a predetermined threshold value above the noise power; estimating, by the processor, Doppler and azimuth frequencies of each scatterer from the determined number of scatterers using the MDF process; determining, by the processor, dispersive scatterers and non-dispersive scatterers using the estimated Doppler and azimuth complex frequencies of each scatterer; and distinguishing, by the processor, the target information from the clutter information, according to the determined dispersive scatterers and non-dispersive scatterers.