How to obtain autocorrelation function of long spanned GPS time series with lags of one month, six month and one year

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Chris Martin 2013-5-30

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How to obtain autocorrelation function of long spanned GPS time series with lags of one month, six month and one year, Please help me

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Chris Martin 2013-6-3

Please help me......

Walter Roberson 2013-6-3

Which toolboxes do you have available? I see autocorrelation functions available in at least DSP and Econ.

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Walter Roberson 2013-6-3

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http://www.mathworks.com/matlabcentral/fileexchange/30540-autocorrelation-function-acf

To determine the appropriate lag, you are going to need to specify how you want to deal with the irregular number of days in a month and the fact that the two 6 month periods are of different length (have to be, as there is an odd number of days in a year.)