| 摘要 |
<p>The device includes an array of antennae (1, 2, 3) formed by Q crossed-loop antennae (1, 2), arranged around a common axis (s1 s2) along adjacent dihedral angles with the same angular value, and a wire-type rectilinear antenna (3) whose longitudinal axis coincides with the common axis (s1 s2). The Q cross-looped antennae (1, 2) and the wire-type rectilinear antenna (3) have a common phase centre (s2) situated at the output terminals of the Q cross-looped antennae and at one of the end terminals of the wire-type antenna. They are respectively coupled to an operand input of a summing circuit (14) with Q+1 inputs via Q+1 multiplier circuits (10, 11, 12) for multiplying the value Xj provided for each cross-looped antenna (1, 2) or by the wire-type antenna (3) by an adjustable complex weighting coefficient Wj, depending on the variations in polarisation of the ionospheric wave received and on its incoming direction as an azimuth angle and elevation angle, so that adding the products Xj.Wj results in a signal which can be read by the receiver (15) with a maximum wanted signal/noise ratio. Application: high-frequency electromagnetic wave receivers.</p> |
