Accession Number:

ADA063030

Title:

Background Suppression in Double-Beam Interferometry Using Tailored Modulation Transfer Functions.

Descriptive Note:

Instrumentation papers,

Corporate Author:

VISIDYNE INC BURLINGTON MASS

Personal Author(s):

• Zehnpfennig,T. F.
• Vanasse,G. A.

Report Date:

1978-09-18

Pagination or Media Count:

19.0

Abstract:

An optical background suppression technique is described in which the lower spatial frequencies of a background field are effectively suppressed, thereby enhancing the detectability of point-like targets. The technique is particularly applicable for use in image-forming double-beam interferometers in which the individual detector elements are matched to the diffraction-limited resolution of the instrument. The technique utilizes pairs of optical systems whose modulation transfer functions are suitably matched and a number of these pairs are described. Author

Descriptors:

• *TARGET DISCRIMINATION
• *INTERFEROMETERS
• TRANSFER FUNCTIONS
• BEAM SPLITTING
• TARGET DETECTION
• BACKGROUND RADIATION
• MODULATORS
• SUPPRESSION

Subject Categories:

• Optical Detection and Detectors
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE