A spectrographic interferometer

Atmospheric monitoring with a spectrographic imager

A compact airborne spectrographic imager (CASI) mounted on top of an attitude stabilizing platform inside a Cessna 207T was used to monitor changes in and around a lake near Berlin for 4 months in 1993± 1994. The radiance was recorded at three di€ erent altitudes in the wavelength range 0 4́± 0 9́ mm. The observed radiances were found to be di€ erent from 1 month to another due to the variability...

A Dsp Board Based Spectrographic Analyzer

A spectrogram is a visual representation of temporal variations in spectral magnitudes at various frequencies of a dynamic signal. The digital spectrographic analysis involves short-time Fourier analysis of the acquired signal, conversion of the spectral magnitudes to dB scale and display of these magnitudes as gray level shades as a function of time and frequency along x and y axes, respective...

Spectrographic Microfluidic Memory

Recent advancements in microand nanoscale fluidic manipulation have enabled the development of a new class of tunable optical structures which are collectively referred to as optofluidic devices. In this paper we will introduce our recent work directed towards the development of a spectrographic optofluidic memory. Data encoding for the memory is based on creating spectrographic codes consistin...

Spectrographic voice identification: a forensic survey.

A survey of 2000 voice identification comparisons made by Federal Bureau of Investigation (FBI) examiners was used to determine the observed error rate of the spectrographic voice identification technique under actual forensic conditions. The qualifications of the examiners and the comparison procedures are set forth. The survey revealed that decisions were made in 34.8% of the comparisons with...

Spectrographic determination of lead in blood.