Prospects for Precision Active Tracking using a Quadrant Detector.

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Abstract:

A general model is developed for an active quadrant tracking system constrained to track the nose or leading edge of incoming missiles and aircraft. The basic system consists of a shortpulse NdYAG 1.06-micrometer laser transmitter and a laser receiver with a quadrant avalanch photodiode detector in a direct detection mode. Using the model with carefully selected target, atmospheric, system, and detector parameters, estimates are made of the random tracking errors to be expected under various conditions. The conditions are noted under which tracking errors of 10 micro rad. maximum can be expected. Author

Author(s):
Walter, J. F.
Author Organization(s):
JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB
Descriptive Note:
Technical memorandum,
Pagination:
0061

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
APL/JHU/TG-1290
Contract/Grant Number(s):
N00017-72-C-4401
 Subject Terms
Communities of Interest:
Air Platforms
Descriptor(s):
*OPTICAL RADAR, *NEODYMIUM LASERS, *LASER TRACKING, SIGNAL PROCESSING, AIRCRAFT, SIGNAL TO NOISE RATIO, ERRORS, LEADING EDGES, GUIDED MISSILE TRACKING SYSTEMS, PHOTODIODES, INFRARED TRANSMITTERS, QUADRANTS, AVALANCHE DIODES, ATMOSPHERICS
Field(s)/Group(s):
Lasers and Masers
Keyword(s):
*Quadrant detectors, Neodymium YAG lasers
Report Date:
1976 Jan 01