Accession Number:

ADA002600

Title:

Superresolution of Rotating Objects.

Descriptive Note:

Technical rept.,

Corporate Author:

ARMY MISSILE RESEARCH DEVELOPMENT AND ENGINEERING LAB REDSTONE ARSENAL ALA PHYSICAL SCIENCES DIRECTORATE

Personal Author(s):

• Christensen,C. R.
• Bennet,J. S.
• Aleksoff,C. C.

Report Date:

1974-06-25

Pagination or Media Count:

20.0

Abstract:

Temporal modulation holographic techniques using the Doppler frequency shift associated with the rotation of objects illuminated by laser light were employed to obtain lateral resolution much greater than the classical limit for an imaging system. For a particular illumination and observation direction, the light that is scattered from each lateral point on the rotating object has a unique optical carrier frequency. The object is imaged onto a photographic plate with a telescope and holographically recorded. The reference wave for this hologram is modulated to produce the same range of Doppler frequencies as from the object. Therefore, the temporal filtering property of the hologram decodes the time channel spread function into a spatial spread function.

Descriptors:

• *INFRARED DETECTION
• REENTRY VEHICLES
• OPTICAL RADAR
• ANTIMISSILE DEFENSE SYSTEMS
• RESOLUTION
• OPTICAL IMAGES
• TARGET DISCRIMINATION
• HOLOGRAPHY
• DOPPLER EFFECT

Subject Categories:

• Antimissile Defense Systems
• Optical Detection and Detectors
• Infrared Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE