Accession Number:

ADA094843

Title:

Aerosol Discrimination by Electronic High- and Low-Pass Filtering

Descriptive Note:

Technical rept.

Corporate Author:

HARRY DIAMOND LABS ADELPHI MD

Report Date:

1980-12-01

Pagination or Media Count:

75.0

Abstract:

Two electronic techniques are investigated for discriminating between aerosol and rigid-target such as aircraft and terrain return signals in pulsed active optical sensors proximity fuzes. Short transmitter pulses approximately 5 to 10 ns full width at half maximum are considered in systems with pencil-beam influence patterns. Relative pulse stretching of aerosol returns is exploited for discrimination by using either a differentiating circuit or a low-pass filter to bring out pulse-speed or pulse-width differences. The investigations involve modeling and analysis, as well as testing the discrimination schemes with measured aerosol-return signals from cumulus clouds. Both techniques are found to be potentially effective for designing proximity fuzes that reject aerosol signals. Author

Subject Categories:

  • Optical Detection and Detectors
  • Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE