| 摘要 |
When proceeding to radio bearings on board of vessels, most often the results are distorted by the mast. To eliminate this error source a system of goniometric antennas is implemented having different directivity diagrams. At least two of the diagrams present zero points in the direction of the longitudinal axis of the vessel, which longitudinal direction extends conveniently and entirely in the vertical plane passing by the longitudinal axis of the vessel. It is particularly convenient to use a double frame (I, II) comprised of two frame antennas in which the planes of the frames are vertical and parallel to the longitudinal axis of the vessel. From said antennas, a dipole voltage and a frame voltage will be decoupled. The corresponding voltages are connected together. The installation will be conveniently completed to obtain a cross radiogoniometric antenna by adding a second frame (III, IV) perpendicular to the first double frame. The installation may be used together with a two-channel display unit (24). |
