Accession Number : AD0619299

Title :   HYPERBOLIC COORDINATE CONVERTER.

Descriptive Note : Final rept.,

Corporate Author : LEAR SIEGLER INC GRAND RAPIDS MICH INSTRUMENT DIV

Personal Author(s) : Roth,W. F. ; VanKoevering,A. R. ; Wozniak,D.

Report Date : JAN 1965

Pagination or Media Count : 179

Abstract : The hyperbolic coordinate converter converts the time difference outputs of the radio receiver into the conventional latitude-longitude coordinates; and from the present position coordinates, calculates and displays the distance, bearing, and bearing error to a preselected destination along a preselected course. The development and construction of an airborne, digital, navigation computer for solving the coordinate conversion problem was proven as a result of an explicit solution to the coordinate conversion problem and some unique computing algorithms for solving trigonometric equations. The mechanization of the computer was a major breakthrough in digital computers and is now called DIVIC for DIgital Variable Increment Computer. The hyperbolic coordinate converter interfaced with an SPN-30 Loran-C Receiving Set was flight tested over the Loran-C East Coast chain. (Author)

Descriptors :   (*HYPERBOLIC NAVIGATION, NAVIGATION COMPUTERS), (*NAVIGATION COMPUTERS, HYPERBOLIC NAVIGATION), (*DIGITAL COMPUTERS, NAVIGATION COMPUTERS), (*LORAN, NAVIGATION COMPUTERS), AIRBORNE, FLIGHT TESTING, RADIO NAVIGATION, RADIO RECEIVERS, TRIGONOMETRY, EQUATIONS

Distribution Statement : APPROVED FOR PUBLIC RELEASE