초록 ▼

A system for detecting and tracking a multiplicity of targets averages radar video returns over small sectors for data smoothing and noise reduction, provides adaptive thresholding by determining noise levels in an area of interest and establishes a detection threshold in accordance with such noise

A system for detecting and tracking a multiplicity of targets averages radar video returns over small sectors for data smoothing and noise reduction, provides adaptive thresholding by determining noise levels in an area of interest and establishes a detection threshold in accordance with such noise level, stores the video data for reach target of interest so that multiple targets on the same bearing may be tracked, and reduces the probability of target swapping by adjusting the target window in accordance with target size and weighting the cells within the window.

대표청구항 ▼

An apparatus for detecting radar return video signals comprising: means for receiving said video signals within predetermined range bins and angle sectors for providing signals representative of average amplitudes of a plurality of successive radar returns within cells of a matrix of cells formed by

An apparatus for detecting radar return video signals comprising: means for receiving said video signals within predetermined range bins and angle sectors for providing signals representative of average amplitudes of a plurality of successive radar returns within cells of a matrix of cells formed by said range bins and said angle sectors, each range bin forming a row in said matrix and each angle sector forming a column; means for storing said representative signals in memory units corresponding to said cells, thereby establishing memory stored signals; means responsive to said memory stored signals for computing a mean value and a mean deviation value for said representative signals in at least one row of said matrix; means coupled to said computing means and said memory means for subtracting a linear combination of said mean value and said mean deviation value from said memory stored signals, thereby establishing noise reduced signals; and means responsive to said noise reduced signals for setting positive noise reduced signals to zero in cells not having at least one abutting cell with a positive noise reduced signal, abutting cells with positive noise reduced signals therein representing detected target units.