二つの静止衛星と地上波のテレビジョン放送を用いた測位システム

概要

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As a step to developing a regional positioning system using geostationary satellites, the authors tried to deduce the positions of a ship steaming in Tokyo Bay, by three transmitters of TV signals ; two geostationary satellites, BS (110°E) and Super Bird (162°E) and Tokyo Tower (139.75°E, 35.67°N). They keep transmitting TV programs. The high stability of the synchronous pulses in the video signal makes it possible to find a range accurately. The rms error of 240 positions of a ship navigating up Uraga Channel deduced every second in reference to those by GPS is 8.7m in longitudinal direction and 6.4m in latitudinal one. Since the longitudinal error is 2.9m, as it was observed at a fixed point (Tokyo University of Mercantile Marine), we suspect that the GPS positions might have been modified by the Kalman filter.
社団法人日本航海学会の論文
1994-03-25