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Computing LORAN time differences with an HP-25 hand calculatorA program for an HP-25 or HP-25C hand calculator that will calculate accurate LORAN-C time differences is described and presented. The program is most useful when checking the accuracy of a LORAN-C receiver at a known latitude and longitude without the aid of an expensive computer. It can thus be used to compute time differences for known landmarks or waypoints to predict in advance the approximate readings during a navigation mission.
Document ID
19780023124
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Jones, E. D. (Ohio Univ. Athens, OH, United States)
Date Acquired
September 3, 2013
Publication Date
August 1, 1978
Subject Category
Aircraft Communications And Navigation
Report/Patent Number
TM-59
NASA-CR-157580
Report Number: TM-59
Report Number: NASA-CR-157580
Accession Number
78N31067
Funding Number(s)
CONTRACT_GRANT: NGR-36-009-017
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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