Decometer was the father of Loran, used by english troops during WW2. It is a navigation instrument based on the same principle of the Loran-C.
Robert W. Lilley has written: 'Loran-C performance assurance assessment program' -- subject(s): Navigation aids, Onboard equipment, Air navigation, Loran C., Instrument approach, Loran, Airplanes, Landing, Instrument landing systems
Kurt J. Schnebele has written: 'Application of Loran-C positioning to hydrographic surveying' -- subject(s): Loran, Hydrographic surveying
G. Hamilton has written: 'Extension of Canadian Loran-C coverage' -- subject(s): Loran, Navigation (Aeronautics) 'Les entreprises multinationales'
W. Heine has written: 'Loran-C, Omega, and differential Omega applied to the civil air navigation requirements of Conus, Alaska, and offshore' -- subject(s): Navigation (Aeronautics), Omega Navigation System, Loran
if the PSC not approved any course. All GOVT Approved computer courses are approved
The third cycle will happen at 30 microsecond. It is chosen because it will avoid contamination by sky wave.
Source Documents - C Only
Celestial navigation, also known as astronavigation (you measure angles of celestial objects with a sextant)Radio direction finding (you use a directional radio antenna to determine direction of transmitter)Non-directional beaconVHF omnidirectional range (VOR)Lorenz beam (this is a beam following system)Low frequency radio rangeGeeLOng-range Aid to Navigation, LORAN (hyperbolic navigation system using pairs of transmitters)LORAN-C (improved version of LORAN)Decca Navigator SystemOmegaAlphaetc.
C. Repeatable
A C. Kermode has written: 'Mechanics of flight'
yup