Direction-finding method for determining the incident direction

Details Direction-finding method for determining the incident direction Direction-finding method for determining the incident direction

1998-10-13

1999-10-19

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Beacon or receiver

342156, G01S 504

Patent

active

059696770

ABSTRACT:
A direction-finding method for determining an incident angle of a high-frequency electromagnetic signal in a system including at least two receiving antennas spaced apart by a known distance. the antenna output signals of the at least two receiving antennas are converted, together (in accordance with a multiplexing procedure) or individually, into the frequency domain through a Fourier transformation, followed by a conversion into an IF range and an A/D conversion. In this range, the phase difference between the output signals is determined and the signal frequency of the incident wave is determined through a phase-sequence analysis. The incident angle of the incident wave is determined from the phase difference and the signal frequency.

REFERENCES:
patent: 5559518 (1996-09-01), DiDomizio

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