Communications: directive radio wave systems and devices (e.g. – Return signal controls radar system – Receiver
Patent
1994-03-18
1996-03-12
Lobo, Ian J.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls radar system
Receiver
342159, G01S 1300
Patent
active
054990300
ABSTRACT:
An artificial intelligence system improves radar signal processor performance by increasing target probability of detection and reducing probability of false alarms in a severe radar clutter environment. This utilizes advances in artificial intelligence and expert systems technology for the development of data analysis and information (signal) processors used in conjunction with conventional (deterministic) data analysis algorithms to combine radar measurement data (including observed target tracks and radar clutter returns from terrain, sea, atmospheric effects, etc.) with topographic data, weather information, and similar information to formulate optimum filter coefficients and threshold tests. Present fielded radar systems use one CFAR algorithm for signal processing over the entire surveillance volume. However, radar experiments have shown that certain CFAR algorithms outperform others in different environments. The system intelligently senses the clutter environment, and selects and combines the most appropriate CFAR algorithm(s) to produce detection decisions that will outperform a processor using a single algorithm. The invention provides for improved performance through the application of rule-based and data-based expert system computer software technology to CFAR signal processors, thereby improving target detection by reducing processing losses which result from a mismatch between the single, fixed CFAR processor and dynamically changing environment in which a radar must operate.
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Antonik et al, Record of the 1993 IEEE National Radar Conference (Cat. No. 93CH3253-2), Lynnfield, Mass., Apr. 1993.
Baldygo, Jr. William J.
Brown Russell D.
Wicks Michael C.
Auton William G.
Lobo Ian J.
The United States of America as represented by the Secretary of
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