CPC H04B 1/1027 (2013.01) [H04B 17/00 (2013.01)] | 9 Claims |
1. A method of determining validity for determination on presence of a specific signal of a detector, the method comprising:
(a) receiving a synthesized signal generated from an outside by the detector;
(b) acquiring a plurality of frequency domain calculation values related to the synthesized signal;
(c) determining the presence of at least one specific signal based on the plurality of frequency domain calculation values; and
(d) determining the validity for the determination on the presence of the specific signal based on a frequency domain scatter plot for the plurality of frequency domain calculation values.
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