biff44
Advanced Member level 6
![Advanced Member level 6](/styles/images/ranks/hlevel3.gif)
- Joined
- Dec 24, 2004
- Messages
- 5,056
- Helped
- 1,376
- Reputation
- 2,748
- Reaction score
- 1,060
- Trophy points
- 1,393
- Location
- New England, USA
- Activity points
- 37,973
barton radar mathcad
Anybody have an example of a inverse FFT algorithm, in Mathcad or excel, that can take return signal frequency domain amplitude and phase data from a radar and turn it into return power vs distance plot? I am playing around with a stepped CW radar (send out one frequency, measure the phase and amplitude of the reflected energy, step to a new frequency and repeat, etc) and just realized I do not know the most basic way of inputing the data into a Mathcad file.
I assume I need to use the ICFFT function, but how do I set up the frequencies. The actual frequencies will be 6.3, 6.310...6.6 GHz. But I do not have a clue how to input that into a mathcad vector.
Also, I read in some HP data that they had to "extrapolate a DC return" for their IFFTs they use in their microwave measuring equipment. Not sure how to even start to do that, since I am not measuring anything in the DC to just under 6.3 GHz region!
Anybody have an example of a inverse FFT algorithm, in Mathcad or excel, that can take return signal frequency domain amplitude and phase data from a radar and turn it into return power vs distance plot? I am playing around with a stepped CW radar (send out one frequency, measure the phase and amplitude of the reflected energy, step to a new frequency and repeat, etc) and just realized I do not know the most basic way of inputing the data into a Mathcad file.
I assume I need to use the ICFFT function, but how do I set up the frequencies. The actual frequencies will be 6.3, 6.310...6.6 GHz. But I do not have a clue how to input that into a mathcad vector.
Also, I read in some HP data that they had to "extrapolate a DC return" for their IFFTs they use in their microwave measuring equipment. Not sure how to even start to do that, since I am not measuring anything in the DC to just under 6.3 GHz region!