Dual channel spatially adaptive CFAR
OwnerJames Onoratoinventor
Life of this patent
Estimating the term…
Abstract
A system for reducing CFAR loss due to sea clutter is disclosed. The system includes a first channel tuned for CFAR gain in a spatially correlated background and a second channel tuned for low CFAR loss in spatially uncorrelated backgrounds. Each of the channels employs a distribution free CFAR using rank ordered statistics to establish a constant false alarm rate. The output of each channel is fused by a hit correlation function and the stream of combined hits is processed by a target centroiding function.
Claims19
An apparatus for detecting targets comprising:
- a first channel tuned for low CFAR loss in a spatially uncorrelated background and;
- a second channel set for CFAR gain in a spatially correlated background.
An apparatus for detecting small targets in a sea clutter environment comprising a channel set for CFAR gain in a spatially correlated background.
A method of reducing CFAR loss due to sea clutter comprising:
- using a first channel tuned for CFAR gain in a spatially correlated background and using a second channel tuned for low CFAR loss in spatially uncorrelated backgrounds, each channel employing a distribution free CFAR using rank ordered statistics to establish a constant false alarm rate;
- fusing the output of each channel by a hit correlation function;
- processing a stream of combined hits by a target centroiding function.
A system for reducing CFAR loss due to sea clutter comprising:
- a first channel tuned for CFAR gain in a spatially correlated background and a second channel tuned for low CFAR loss in spatially uncorrelated backgrounds, each channel employing a distribution free CFAR using rank ordered statistics to establish a constant false alarm rate;
- a means for fusing the output of each channel by a hit correlation function and a means for processing a stream of combined hits by a target centroiding function.
Dependencies are inferred from the claim text.