電波伝搬上の屈折効果がNNSS測位に及ぼす影響

概要

論文の詳細を見る
For position fixing of the Navy Novigation Satellite System (NNSS), the distance between a satellite and a user is calculated on the assumption that radio wave propagates along the straight path. However, the path of radio wave is bent in ionospheric layer and its bending amount is calculated by frequency and electron contents in the layer. Also, its path is refracted in troposphere but tropospheric refraction is not affected by radio frequencies. In this report, we calculated position fixing errors of NNSS resulting from radio wave refraction at following cases; (a) Residual positioning errors by tropospheric refraction after ionospheric refraction effect is compensated by two frequencies receiving equipment, (b) Positioning errors measured by one frequency (400MHz band) receiving equipment as a result of ionospheric and tropospheric refractions.
社団法人日本航海学会の論文
1973-07-30