Is it possible to predict the shape of the signal at position B by the measure in a position?

Hi, I need to know the shape of signal and position phases B, but I have only a single antenna to a position, which is of the form 1 m B. The signal is a source far away.   I think that it is possible to predicte it.

Like this: first transformation the signal received at A time in the field of fourier-domain, then caculation phase changes of the components of frequency between A and B. After that turn it into time domain, it should be the series of signals to frequency B.

I simulation Matlab process, but it seems that he has a problem. What is the problem with this method? Are there methods to achieve this coming? Any response will be appreciaged.

If your antennae are in free space so that you can assume that you have not all paths multiple problems, so it shouldn't be too difficult to predict the relative phase between A and B.

You should know the angle between the line from A to B and the B line to the source.  You need to know the wavelength.  You need to do a few trigonometry.  In the simple case where all three are collinear phase shift is 2 * pi * (spacing of A - B) / wavelength. For the other angles, you will need to calculate the appropriate triangle.

If the signal has a complex modulation, especially if it signals a wideband, there may not be any simple way or simple to calculate the phase shift.

Lynn

Tags: NI Software

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