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Omega navigation system - GPS trick

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Post time 2018-10-24 12:55:14 | Show all posts |Read mode
https://en.wikipedia.org/wiki/Omega_(navigation_system)

Omega navigation system >>> Long Range VLF Radio Navigation

OMEGA was the first global-range radio navigation system, operated by the United States in cooperation with six partner nations.

It enabled 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 network of fixed terrestrial radio beacons, using a receiver unit.
It became operational around 1971 and was shut down in 1997 in favour of the Global Positioning System.

nampak tak ?  Omega navigation system mula sekitar tahun 1971 , dan shut down tahun 1997 , lepas kononnya ada satelit GPS

sekali lagi , manusia tak perlu satelit GPS utk menentukan coordinat sesuatu benda.

jadi dgn teknik Omega navigation system , mereka boleh buat trick kata guna satelit GPS yg lebih hebat ( bina tower lebih byk , pasti lebih accurate )


kat laut dalam , tiada tower , tiada GPS .



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