| 摘要 |
PROBLEM TO BE SOLVED: To provide a position-detecting system for a radio wave source, which is enhanced in detection accuracy by eliminating influence of phase difference (ϕa-ϕb), that is caused from a phase shift due to multipath propagation or fading. SOLUTION: The position-detecting system for a radio wave source comprises a plurality of sensor stations (S1, S2, S3), which receive electric waves emitted by a radio wave source (unknown station) to decompose a receiving signal waveform within a prescribed period of time from a reference time into a real part and an imaginary part and then transmits complex frequency components produced by Fourier-transforming each part to a center station (C), an the center station (C), which calculates a complex conjugate product between complex frequency components received from these sensor stations (S1, S2, S3) to calculate a difference between the arrival time of each sensor station from a relation between the phase revolution quantity and the frequency of this complex conjugate product, and then detects the position of the radio wave source, based on this calculated difference of the arrival times.
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