Integrating a fft over a range of frequencies and plotting the output as a function of time

[Vaibhav_Sinha]

I got a signal from an antenna and sent it to the DSO. From the DSO, I sent the signal to SignalExpress and saved it on harddisk. This thing had to be done for 5 hours. The frequency at which i got the peak was 74MHz(which was desired). Now I want to integrate the total power in the bandwidth of the antenna. So I took the fft of the signal on labview and sent it to filter so as to remove the frequencies outside the bandwidth. Now, all i want to do is to integrate the power in the bandwidth and store it in a file as a function of time. Can somebody help me with this?

PS:I dont have an Integrator function in my toolkit(can it be downloaded?).

[Coq_Rouge]

Take a look here. But it is also easy to program such function. Just Google numerical Integration

Message Edited by t06afre on 03-19-2009 02:34 PM

[Vaibhav_Sinha]

I will try using that option. A bit busy these days, hence could not implement it yet. Another question. Is it possible to store the FFT of a signal as a function of time in a file? If i just send the output of FFT function to a file, would it be stored?

[CoastalMaineBird]

If i just send the output of FFT function to a file, would it be stored?

I guess I don't understand the question.

A file stores whatever you write to it.