Accession Number:

ADA063767

Title:

Imaging and Target Detection with a Heterodyne-Reception Optical Radar.

Descriptive Note:

Project rept.,

Corporate Author:

MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s):

Report Date:

1978-10-13

Pagination or Media Count:

82.0

Abstract:

A theoretical study of the use of a heterodyne reception CO2 laser radar for imaging and target detection is reported. Specifically, a mathematical system model for the radar is developed, incorporating the statistical effects of propagation through atmospheric turbulence, target speckle and glint, and heterodyne-reception shot noise. This model is used to find the image signal-to-noise ratio of a matched-filter envelope detector receiver and the target-detection probability of the optimum likelihood-ratio processor. For realistic parameter values it is shown that turbulence-induced beam spreading and coherence loss may be neglected. Target speckle and atmospheric scintillation, however, present serious limitations on single-frame imaging and target detection performance. Author

Subject Categories:

  • Lasers and Masers
  • Cybernetics
  • Infrared Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE