Digital system for automotive crash avoidance measures and displays difference in frequency between two sinusoidal input signals of slightly different frequencies. Designed for use with Doppler radars. Characterized as digital mixer coupled to frequency counter measuring difference frequency in mixer output. Technique determines target path mathematically. Used for tracking cars, missiles, bullets, baseballs, and other fast-moving objects.
Digital-Difference Processing For Collision Avoidance.
NASA Tech Briefs ; 12 , 3
1988-03-01
Sonstige
Keine Angabe
Englisch
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