Helicopter airborne laser positioning system (HALPS)
By: Joseph C. Eppel ... [et al.].
Contributors: Eppel, Joseph C.; Ames Research Center.
Series: NASA technical memorandum -- 102814.
Publisher: National Aeronautics and Space Administration, Ames Research Center; For sale by the National Technical Information Service
Published: 1990
Place of publication: Moffett Field, Calif; [Springfield, Va
Language: eng
Format: Microform
Number of pages: 18
Subjects: Helicopters.; Feedback control systems.; Acoustic measurement.; Airborne lasers.; Feedback control.; Ground tests.; Helicopters.; Position errors.; Positioning.; Systems analysis.
Notes: Shipping list no.: 91-0093-M.

"March 1990."

"Performing organization report no.: A-90139"--Technical rept. documentation p.

Includes bibliographical references (p. 8).

Also available via Internet from the NASA Technical Report Server web site. Address as of 4/26/06: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19900014083%5F1990014083.pdf; current access available via PURL.

Microfiche. [Washington, D.C.? : National Aeronautics and Space Administration, 1990]. 1 microfiche : negative.

505-61-51.