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Collection of Detonation Signatures and Characterization of Spectral Features

Collection of Detonation Signatures and Characterization of Spectral Features






Publisher:  Storming Media
Summary: The remote observations of the temporal and spectral characteristics of the infrared (IR) emissions from exploding ordnance have been correlated with explosion conditions. A Bomem MR-154 Fourier Transform Interferometer with two detectors, InSb and HgCdTe, and a 75 mrad telescope was used to record spectra in the 1.3 - 20 micrometers range. Data was collected at spectral resolutions of 16 /cm and 4 /cm and temporal r...esolutions of 0.045 s and 0.123 s respectively. Two field tests were conducted: (1) a set of dynamic drop explosions and (2) a series of static detonations. In most events, the temporal profile for certain bands indicate a rapid, intense signature, followed by a secondary maximum and a long-term decay of up to several seconds. A second class of temporal profiles were characterized by an event initiation, followed by an increase in apparent radiance to one maximum, followed by a long-term decay. Sensor fusion between the FTIR instrument and four 200 Hz InSb radiometers is quite promising. The FTIR temporal profiles, calibrated for absolute radiance, compare within 8% in three independent bands and within 30% in the fourth band. The degree of temporal overlap as a function of frequency for a pair of detonation events, provides a direct indication of the ability to discriminate between explosion conditions. Overlap analysis provides quantification of the repeatability of an explosive condition, and the discrimination between look angle and explosive type. Additional preliminary analysis mechanistically describes all events as decaying gray bodies. [read more]

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Collection of Detonation Signatures and Characterization of Spectral Features

ISBN-13: 9781423534846

ISBN: 1423534840

Publisher: Storming Media
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