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1 #ifndef __FXANALISE_ALLAN_H__
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2 #define __FXANALISE_ALLAN_H__
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Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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3
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4 /**
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5 * The Allan deviation is computed at 2^(N tau0) seconds integration times
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6 * with N ranging from 0 to ALLAN_NUM_DATAPOINTS - 1. Setting this parameter
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7 * to 14 allows to compute the allan deviation up to 2^13 = 8192 seconds. */
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8 #define ALLAN_NUM_DATAPOINTS 14
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Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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10 typedef struct {
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11 int AllanPanel; /* display panel handle */
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12 double X[ALLAN_NUM_DATAPOINTS];
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13 double AllanVar[ALLAN_NUM_DATAPOINTS]; /* Allan variance computed at tau = 2^(N tau0) */
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14 double FirstMean[ALLAN_NUM_DATAPOINTS]; /* mean of the first block of 2^N data for which averaging was completed */
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15 double LastMean[ALLAN_NUM_DATAPOINTS]; /* mean of the last block of 2^N data for which averaging was completed */
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16 int BlocksNumber[ALLAN_NUM_DATAPOINTS]; /* number of 2^N data points blocks used for computing AVAR(2^(N tau0)) */
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17 double CurrentAverage[ALLAN_NUM_DATAPOINTS]; /* sum of the last P data points retrieved. P < 2^N */
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18 int NbCurrentAverage[ALLAN_NUM_DATAPOINTS]; /* number of data point being summed in CurrentAverage */
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19 double Drift; /* frequency drift rate [Hz/s] */
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20 double Mean; /* mean frequency [Hz] */
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21 double normalization;
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22 int autoscale;
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23 int active; /* active */
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24 int parent; /* panel containig the activation control */
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25 int control; /* activation control handle */
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26 } Allan_Data;
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Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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27
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28 void Allan_InitPanel(Allan_Data *data, const char * title, double Normalizer, int parent, int control);
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29 void Allan_ClosePanel(Allan_Data *data);
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30 void Allan_AddFrequency(Allan_Data * data, double Freq);
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Daniele Nicolodi <daniele.nicolodi@obspm.fr>
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31
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32 #endif
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