NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Confidence range estimate of extended source imagery acquisition algorithms via computer simulationsSpatial acquisition using the sun-lit Earth as a beacon source provides several advantages over active beacon-based systems for deep-space optical communication systems. However, since the angular extend of the Earth image is large compared to the laser beam divergence, the acquisition subsystem must be capable of resolving the image to derive the proper pointing orientation. The algorithms used must be capable of deducing the receiver location given the blurring introduced by the imaging optics and the large Earth albedo fluctuation. Furthermore, because of the complexity of modelling the Earth and the tracking algorithms, an accurate estimate of the algorithm accuracy can only be made via simulation using realistic Earth images. An image simulator was constructed for this purpose, and the results of the simulation runs are reported.
Document ID
19930064409
Document Type
Conference Paper
Authors
Chen, CHIEN-C. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hui, Elliot (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Okamoto, Garret (JPL Pasadena, CA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1992
Publication Information
Publication: In: Free-space laser communication technologies IV; Proceedings of the 4th Conference, Los Angeles, CA, Jan. 23, 24, 1992 (A93-48376 20-17)
Subject Category
SPACE COMMUNICATIONS, SPACECRAFT COMMUNICATIONS, COMMAND AND TRACKING
Distribution Limits
Public
Copyright
Other

Related Records

IDRelationTitle19930064379Analytic PrimaryFree-space laser communication technologies IV; Proceedings of the 4th Conference, Los Angeles, CA, Jan. 23, 24, 1992