I devised an laser interferometer which measures the amplitude of a vibrating object. The vibration is in microns and around 100 kHz. I am planning to make a program that analyze that look like carrier wave, the peaks inside the wave envelope are counted. At each node or at minimum or which I call the turning point of vibration, theres an abrupt change of amplitude. I want it that after the turning point is detected, it will return and start counting the next set of wave. 2 set of waves corresponds for one period of vibration. I am having problem on on detecting the peaks then start counting the next group of wave.
After this, I am planning to create a spectrum analyzer, the next problem is to translate each group in a sign wave so that it will be easier to fourier transform. I am using Labview 5.0 and 7.0. It would be either one of this version I will be using for this application. Around 100kHz (rise and fall) frequency of vibration, is it capable of measuring this freq range?
