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

reportActive / Technical Report | Accession Number: ADA063767 | Open PDF

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

Author(s):
Shapiro, Jeffrey H.
Author Organization(s):
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
Descriptive Note:
Project rept.,
Pagination:
0082

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TST-24, ESD-TR-78-275
Contract/Grant Number(s):
F19628-78-C-0002
Project Number(s):
649L
Monitor Series:
TR-78-275
 Subject Terms
Joint Capability Areas:
JCA_2.2.2_Imagery Collection; JCA_2.2_Collection; JCA_5_Command and Control; JCA_5.3_Planning
Modernization Areas:
Quantum Science and Computing
Communities of Interest:
Air Platforms
Descriptor(s):
*OPTICAL RADAR, *INFRARED DETECTORS, *CARBON DIOXIDE LASERS, HETERODYNING, AIRBORNE, SIGNAL TO NOISE RATIO, FAR INFRARED RADIATION, INFRARED IMAGES, LIGHT TRANSMISSION, MATCHED FILTERS, GLINT, SCINTILLATION, SHOT NOISE, ATMOSPHERIC WINDOWS
Field(s)/Group(s):
Lasers and Masers, Cybernetics, Infrared Detection and Detectors
Keyword(s):
Target speckle, PE65705F
Report Date:
1978 Oct 13