108 lines
5.3 KiB
Plaintext
108 lines
5.3 KiB
Plaintext
The global +coord file was re-created by concatenating the sub-files.
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Detailed timing and sub-files:
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- File _1: emergency exit to CP6 (T0 to T2)
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- T0: AP started (emergency exit = 75.50;-34.50;1)
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- T1: start walking
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- Elapsed: 00m 08s .72
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- Total time: 00m 08s .72
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- Theoretical timestamp: T2 - 53.90 s = 1368650387.024390126
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- T2: AP stopped (CP6 = 121.80;-21.10;1)
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- Elapsed: 00m 53s .90
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- Total time: 01m 02s .62
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- Timestamp: 1368650440.924390126
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- File _2: CP6 to CP3 (T3 to T5)
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- T3: AP started
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- Elapsed: 00m 34s .13
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- Total time: 01m 36s .75
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- Theoretical timestamp: T2 + 34.13 = 1368650475.054390126
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- T4: start walking (CP6 = 121.80;-21.10;1)
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- Elapsed: 00m 06s .12
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- Total time: 01m 42s .87
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- Theoretical timestamp: T3 + 6.12 = 1368650481.174390126
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or T5 - 67.39 s = 1368650481.531350330
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- T5: AP stopped (CP3 = 177.90;18.15;1)
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- Elapsed: 01m 07s .39
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- Total time: 02m 50s .26
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- Timestamp: 1368650548.921350330
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- Theoretical timestamp: T4 + 67.39 = 1368650548.564390126
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- File _3: CP3 to CP2 (T6 to T8)
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- T6: AP started
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- Elapsed: 00m 35s .51
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- Total time: 03m 25s .77
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- Theoretical timestamp: T5 + 35.51 = 1368650584.074390126
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- T7: start walking (CP3 = 177.90;18.15;1)
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- Elapsed: 00m 06s .62
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- Total time: 03m 32s .39
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- Theoretical timestamp: T6 + 6.62 = 1368650590.694390126
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or T8 - 55.27 = 1368650590.631713005
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- Note: the request sent at timestamp 1368650589.997169920 is
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considered as being sent before the operator started walking,
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therefore it was not used as the first bound for coordinate
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interpolation (a dummy request with timestamp 1368650590.694390126
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was used for the interpolation).
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- T8: AP stopped (CP2 = 160.85;78.30;1)
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- Elapsed: 00m 55s .27
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- Total time: 04m 27s .66
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- Timestamp: 1368650645.901713005
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- Theoretical timestamp: T7 + 55.27 = 1368650645.964390126
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- File _4: CP2 to CP1 (T9 to T11)
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- T9: AP started
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- Elapsed: 00m 32s .93
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- Total time: 05m 00s .59
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- Theoretical timestamp: T8 + 32.93 = 1368650678.894390126
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- T10: start walking (CP2 = 160.85;78.30;1)
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- Elapsed: 00m 06s .11
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- Total time: 05m 06s .70
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- Timestamp: 1368650685.000436732
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- Theoretical timestamp: T9 + 6.11 = 1368650685.004390126
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- T11: AP stopped (CP1 = 128.25;142.40;1)
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- Elapsed: 00m 59s .75
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- Total time: 06m 06s .45
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- Timestamp: 1368650744.893494551
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- Theoretical timestamp: T10 + 59.75 = 1368650744.754390126
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- File _5: CP1 to CP5 (T12 to T14)
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- T12: AP started
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- Elapsed: 00m 33s .73
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- Total time: 06m 40s .18
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- Theoretical timestamp: T11 + 33.73 = 1368650778.484390126
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- T13: start walking (CP1 = 128.25;142.40;1)
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- Elapsed: 00m 06s .38
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- Total time: 06m 46s .56
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- Timestamp: 1368650783.968516753
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- Theoretical timestamp: T12 + 6.38 = 1368650784.864390126
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- Note: to cope with the deviation of the timestamps, we used the
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second request in the file as departure time instead of the
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theoretical timestamp.
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- T14: AP stopped (CP5 = 72.10;122;1)
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- Elapsed: 00m 51s .57
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- Total time: 07m 38s .13
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- Timestamp: 1368650835.876004579
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- Theoretical timestamp: T13 + 51.57 = 1368650836.434390126
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Please note that the timings are approximate and that it is impossible
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to know exactly when the operator started the AP at the beginning of
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the scenario and stopped it at the end (although normally the mobile
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stops transmitting requests as soon as the AP is off, so the stop time
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is a better indicator).
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For example, here we consider that the timestamp of the last request of
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t01, i.e. 1368650440.924390126, corresponds to T2 (walk stops), but it
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is possible that this request was transmitted while the operator was
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already standing still next to CP6 for a second. From this timestamp, we
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extrapolate the theoretical timestamp of T1 (a request was sent at
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1368650387.038010383, which is close enough, but it has been filtered
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out because it was buggy). We also extrapolate the later theoretical
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timestamps from T2.
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In the timing above, a "real" timestamp (i.e. corresponding really to a
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transmitted positioning request) is also noted for some of the requests.
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For the interpolation of the coordinates, the first timestamp that
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appears in the list for a given step was used, but to compute future
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theoretical timestamps, previous theoretical timestamps were used.
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