MIT2_017JF09_p20

MIT2_017JF09_p20 - 20 COMPUTATIONS ON RECORDED RP...

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Unformatted text preview: 20 COMPUTATIONS ON RECORDED RP DATA 60 20 Computations on Recorded RP Data Load the data file homework4.dat from the course web site. The first column is time t and the second column is a measured signal h ( t ), in Volts. 1. What is the variance of h , from the simple time formula? What is the significant (average 1/3-highest) height based on this variance? The variance is the time average of h ( t ) 2 , because the signal has zero mean; it comes out to . 97 V 2 , so that the significant height is 3 . 93 V . 2. Write a program to count the waves using zero upcrossings as the endpoints for cycles. How many full waves do you get? What is the significant height from these observa- tions? What is the average period? Make histograms (20 bins please) of the heights and of the periods observed. There are 415 complete waves, the one-third average highest height is 3 . 63 V , and the average period is 1 . 20 sec . The height histogram confirms a Rayleigh-like distribution (although 415 data are not...
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This note was uploaded on 11/29/2011 for the course CIVIL 1.00 taught by Professor Georgekocur during the Spring '05 term at MIT.

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MIT2_017JF09_p20 - 20 COMPUTATIONS ON RECORDED RP...

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