Communications: directive radio wave systems and devices (e.g. – Return signal controls radar system – Receiver
Patent
1997-12-31
1999-09-07
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Return signal controls radar system
Receiver
342159, G01S 734
Patent
active
059493682
ABSTRACT:
A false alarm rate is maintained at or below a desired rate over a fluctuating mean noise level for providing additional sensitivity and increased range performance in a constant false alarm rate (CFAR) circuit in a radar system by: utilizing a variable CFAR detection threshold level for distances out to the radar's horizon; and, for distances beyond the radar's horizon, utilizing a relatively low fixed CFAR detection threshold level in place of the variable CFAR detection threshold level when there are no environmental factors present that produce additional radar returns.
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patent: 5798728 (1998-08-01), Tomishima et al.
Radar Handbook, Automatic Detection, Tracking, and Sensor Integration, Second Edition, (1990) Merrill I. Skolnik, McGraw-Hill, Inc., pp. 8.12-8.21.
Northrop Grumman Corporation
Sotomayor John B.
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