Method and system for locating direction of transmission source based on wave therefrom
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United States of America Patent
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Aug 2, 1994
Issued Date -
N/A
app pub date -
Jul 28, 1992
filing date -
Jun 2, 1989
priority date (Note) -
Expired
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Abstract
A direction finding method and system for locating the direction of a transmission source based on an electromagnetic wave which is transmitted from the transmission source and is received by an antenna means at a receiving end apparatus. The transmission source transmits an angle-modulated wave. Meanwhile, the receiving end apparatus receives the transmitted wave, converts into electrical signals a beat frequency signal which is caused by direct and reflected waves contained in the received wave, and time-averaging the electrical signals, thus minimizing a angle error due to a multipass interference.
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