Matched filter target acquisition radiometric system
AssigneeSperry Rand Corporation
InventorJoseph L. Connors
Life of this patent
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Abstract
The matched filter target acquisition radiometric system employs a composite scanning system in searching, acquiring, and tracking relatively small targets on a background of large-magnitude, widely-fluctuating-noise generating terrain. Search for a target is accomplished by a combined circular and conical scan antenna system that generates characteristic invariant wave forms when the circularly symmetric antenna pattern sweeps across a target, patterns that are readily recognized by a matched filter signal processing system, thereupon shifting operation of the antenna control system to a conical scan automatic tracking mode.
Claims13
In a high frequency target detector system:
- directive antenna means for providing a circularly symmetric antenna receptivity pattern with a directive axis,
- composite antenna control means for causing said antenna receptivity pattern cyclically to execute a conical scan pattern about a circular path,
- signal generator means cooperative with said directive antenna means for generating first and second sets of signals representative of the instantaneous angular positions of said antenna receptivity pattern with respect to said conical scan pattern and with respect to said circular path, respectively,
- receiver means responsive to said antenna means,
- signal processor means responsive to said first and second sets of signals and to said receiver means when said target lies within said antenna receptivity pattern for yielding at least one invariant output wave,
- recognition means responsive to said one invariant output wave for generating a recognition signal, and
- utilization means responsive to said recognition signal.
Dependencies are inferred from the claim text.