オメガ電波の南北伝搬 : ことにオーストラリア局信号の受信

概要

論文の詳細を見る
Observations of OMEGA Australia signal in the North Western Pacific and OMEGA Japan signal in Australia were performed. Unexpected number of cycle jumps occur in both OMEGA signals of 10.2 and 11.3kHz. Using the observation with ship over the North Pacific, it is found that the jump of OMEGA Australia of 10.2kHz first appeared in the longitude of 155°East and the number of jumps increased as we move to the west. Since this longitude of 155°East corresponds to magnetic north from OMEGA Australia, this phenomena will be caused by the magnetic azimuth and latitude dependence of OMEGA propagation. Moreover the same result is able to detected in Australian receiving sites as well. Through the experiment, 13.6kHz signals from both transmitters did not jump over almost area which suggests an availability of 13.6kHz for the navigational frequency instead of 10.2kHz.
社団法人日本航海学会の論文
1988-03-25