| 摘要 |
PROBLEM TO BE SOLVED: To perform the orientation of the position of radar radio wave emission emitting pulsed radio waves as rotating periodically only by reception at two points without using a direction finding means using the phase and amplitude of received radio waves. SOLUTION: Antennas and receivers arranged at two points measure the reception time of a pulse received by each receiver and the time of facing the main beam of an object radar. By comparing each value measured at the two points, the time differenceΔt in the reception of pulses emitted from the radar and the time differenceΔT in facing the main beam are obtained. The position on a plane which enables the time differenceΔt in the reception of pulses to hold is obtained as the locus 10 of constantΔt. In addition, from the time differenceΔT in facing the main beam and the rotational period T0 of the radar antennas, the angleΔθwhich the two reception points form with the position of the radar is calculated by the expressionΔθ=2π×ΔT/ΔT0, and the position on a plane which enables this expressionΔθ= constant to hold is obtained as a locus 11. The two loci 10 and 11 are each computed to obtain the point of interception, and the position of the radar i.e., the position of a radio wave emission source is determined.
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