title: Infrared noise caused by turbulent flows.
abstract: Formulas are derived for the rms noise power and power spectrum observed by an ir detector adjacent to a turbulent flow layer. The power spectrum seen by a finite aperture is conveniently expressed in terms of the power spectrum observed by a point detector. Using a simple idealization of experimental results for the latter, the spectrum observed by a finite circular aperture is calculated. Aperture averaging appears to be surprisingly ineffective in limiting the noise spectrum unless wide apertures can be employed.
authors.forename: L S
authors.initials: LS
authors.lastname: Taylor