Post Reply 
(HP-65) OMEGA (global-range radio navigation system)
11-09-2020, 02:04 PM (This post was last modified: 11-09-2020 02:07 PM by SlideRule.)
Post: #1
(HP-65) OMEGA (global-range radio navigation system)
" OMEGA was the first global-range radio navigation system, operated by the United States in cooperation with six partner nations. It was a hyperbolic navigation system, enabling ships and aircraft to determine their position by receiving very low frequency (VLF) radio signals in the range 10 to 14 kHz, transmitted by a global network of eight fixed terrestrial radio beacons, using a navigation receiver unit. It became operational around 1971 and was shut down in 1997 in favour of the Global Positioning System. "

Technical Report 484, Volume 1
OMEGA LA REUNION ANTENNA SYSTEM:
MODIFICATION AND VALIDATION TESTS (Aug 1978)

IV. CALCULATIONS, ERRORS AND PROGRAMS
     A. CALCULATIONS
     1. In position determination by DME, the known values are the baseline
azimuth, the baseline length and the two remaining sides of a triangle. The
known values of the triangle are the three sides. The law of cosine is used
to calculate the angle between the baseline and the vector to the helicopter
from the primary (D1) transponder. This angle is added to the azimuth of
the baseline to obtain the true azimuth from D1 to the helicopter. The
distance to the helicopter from DI is measured directly by the distance
measuring unit (DMU) located in the helicopter.
     2. To obtain the location of the helicopter, with respect to the
transmitting antenna, the station to DI vector is added to the D1 to heli-
copter vector. The resultant vector is the azimuth and distance from the
station to the helicopter.

     C. PROGRAMS
     1. The only programmable calculator available to the author was the
Hewlett-Packard HP-65. It has a limited number of program steps (100)
and a limited number of storage registers (8), because of trigonometric
functions.

TABLE G-1. Position by DME - Range Parameters

TABLE G-3. Position by DME - Distance and Azimuth from Station


Technical Report 492, Volume 1
OMEGA JAPAN ANTENNA SYSTEM:
MODIFICATION AND VALIDATION TESTS (Nov 1978)

similar content, different location

Technical Report 493, Volume 1
OMEGA HAWAII ANTENNA SYSTEM:
MODIFICATION AND VALIDATION TESTS (May-Jun 1978, Mar-May 1979)

similar content, different location

Technical Report 246, Volume 1
OMEGA NORWAY ANTENNA
SYSTEM CHARACTERISTICS:
MODIFICATION AND VALIDATION TESTS

additional tech etc. etc.

BEST!
SlideRule

ps: Omega Navigation System Course Books;
Omega Navigation System Course Book vol 1
Omega Navigation System Course Book vol 2
Find all posts by this user
Quote this message in a reply
Post Reply 




User(s) browsing this thread: 1 Guest(s)