Other Parts Discussed in Thread: AWR1243
Hi,
I am doing experiement about interference between two AWR1243s with identical chirp configuration.
Each PRI has 128 chirps, each chip has 512 samples. One AWR1243 is working as victim radar, the other one is working as aggressor radar.
Here is the FFT plot of 20th chirp of the data I collected on the victim radar side.
In the figure above, there is one ghost target in the positive FFT part (FFT bin:0~255), this is because the interfering chirp is below the TX chirp.
As the number of chirp increases, like 21st chirp, the ghost target is moving in one direction. This is because of random clock drift.
What makes me confused is:
why there is a symmetric ghost target in the negative FFT part (FFT bin:256~511) at the same time?
why the symmetric ghost target in the negative FFT part is with less intensity than that in the positive FFT part?
Thanks!