DIGITALNA ARHIVA ŠUMARSKOG LISTA
prilagođeno pretraživanje po punom tekstu




ŠUMARSKI LIST 7-8/2021 str. 69     <-- 69 -->        PDF

SALH-P6, SALH-P7, and SALH-P8 by using Topcon Magnet Tools Software. Figures 4, 5, 6 and 7 show the deviations for P5, P6, P7 and P8 points, in Easting (Y), Northing (X) coordinate directions. The comparison of the results of the PPK and static surveys for P5 point shows that the variations were generally about ± (1-10) cm in horizontal coordinates between 10:30 hour and 15:30 hour, see Figure 4. Between 10:30 hour and 15:30 hour, the integer ambiguity value fixed for all of this time period (10:30-15:30 hour) for P5 (clear line-of-sight). The horizontal coordinate differences at this time period between the PPK surveys and the static surveys differed up to about ± (1-5) cm, see Figure 4.
The comparison of the results of the PPK and static surveys for P6 point shows that the variations were generally about ± (0-250) cm in horizontal coordinates between 10:30 hour and 14:30 hour. The ambiguity solution not fixed at the period (between 10:15 and 11:00 hour, between 11:15 and 14:45 hours). The signal scattering due to the trees causes strongly fluctuating epoch results, with ranges of ± (250 cm) for the north and east components, see Figure 5. Between 11:00 and 11:15 hour; the integer ambiguity value fixed. The horizontal coordinate differences at these periods between the PPK surveys and the static surveys differed up to about ± (0-10) cm, see Figure 5.
The comparison of the results of the PPK and static surveys for P7 point shows that the variations were generally about ± (0-150) cm in horizontal coordinates between 10:30:00 hour and 15:30:00 hour (except for between 6:30-7:30 hour). The ambiguity solution not fixed at this period. The signal scattering due to the trees causes strongly fluctuating epoch results, with ranges of ± (0-150) cm for the north and east components, see Figure 6. Between 10:45 hour and 11:00 hours, between 15:10 and 15:30; the integer ambiguity value fixed. The horizontal coordinate differences at this period between the PPK surveys and the static surveys differed up to about ± (0-10) cm, see Figure 6.
The comparison of the results of the PPK and static surveys for P8 point shows that the variations were generally about ± (0-200) cm in horizontal coordinates between 10:30:00 hour and 15:30:00 hour (except for between 11:30-11:45 hour). The ambiguity solution not fixed at this period. The signal scattering due to the trees causes strongly fluctuating epoch results, with ranges of ± (0-200) cm for the north and east components, see Figure 7. Between 11:30 hour and 11:45 hours; the integer ambiguity value fixed. The horizontal coordinate differences at this period between the PPK surveys and the static surveys differed up to about ± (0-10) cm, see Figure 7.