Buongiorno,
al fine di redigere un tipo mappale per nuova costruzione ho eseguito rilievo GPS in modalità VRS.
Dopo aver effettuato l’elaborazione, scopro che tutti i punti hanno il semiasse maggiore delle ellissi d’errore maggiore di 10 cm.
In altri lavori mi è capitato di riscontrare solamente uno o due punti fuori tolleranza ed ho risolto iperdeterminando i punti in questione.
Nel caso odierno dubito che sia problema di iperdeterminazione.
In pregeo ho provato a cambiare il punto di origine del rilievo, ho provato con i punti 318, 316 ed infine 312 ma la situazione cambia di poco.
Provando comunque ad effettuare la proposta di aggiornamento mi sono accorto che tra l’EDM in formato pdf e quello in formato emp c’è una grande discrepanza nella posizione dei punti fiduciali utilizzati. Ovvero nei due estratti rilasciati dall’agenzia due PF utilizzati nel rilievo risultano in posizioni molto distanti.
In punti che ho battuto come da relativa monografia, risultano prossimi ai corrispondenti punti dell’estratto pdf ma non a quello emp. Allego due immagini esplicative.
Potrebbe essere questo il problema? In questo caso come dovrei risolvere?
Considerato che il triangolo fiduciale ha due lati molto lunghi pensavo di battere un ulteriore PF in modo da allungare la base minore del triangolo. In questo caso il PF24 continuerebbe a rimanere un vertice del triangolo, mentre l’altro (PF07) risulterebbe interno.
Sperando sia utile di seguito riporto il mio libretto
0|12042024|2|E532|0200|105|GRILLO FRANCESCO|INGEGNERE|SIRACUSA|
9|12|10|20|29458|PREGEO 10.00-G,APAG 2.12|FR|GNSS STONEZ MOD. S800A|
1|100|4901705.715,1315639.125,3850168.900|1.744|
6|L2|28032024-12:50|11042024-12:42|RTK|PDOP=1|
2|312|45.522,67.286,-42.922|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|3.564|spigolo muro[VRS]|
2|PF21/0200/E532|571.937,390.118,-660.819|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|2.944|incrocio muri confine|
2|PF07/0200/E532|-143.649,173.757,123.139|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|2.944|spigolo fabbricato|
2|400|-145.706,178.020,125.209|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|3.564|spigolo fabbricato|
2|402|-139.977,177.041,119.181|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|4.084|spigolo ingresso fabbricato|
2|PF24/0200/E532|15.592,-193.628,38.339|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|0.064|spigolo vasca|
2|500|34.063,-172.593,8.289|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|1.744|spigolo vasca|
2|501|35.279,-174.533,7.461|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|1.744|spigolo vasca|
2|502|34.404,-175.942,9.206|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|1.744|spigolo vasca|
2|503|33.517,-173.876,10.298|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|1.744|spigolo vasca|
2|504|18.189,-197.793,36.519|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|0.064|spigolo vasca|
2|505|17.580,-190.830,34.883|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|0.064|spigolo vasca|
2|200|-4.482,14.195,4.592|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|3.364|spigolo muro|
2|201|-5.072,13.192,5.683|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|3.364|spigolo tetto|
2|202|-1.120,6.827,2.437|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|3.364|spigolo tetto|
2|203|-6.256,-0.391,10.272|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|3.364|spigolo tetto|
2|204|-11.893,5.648,13.417|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|0.064|spigolo tetto|
2|205|-3.446,-1.794,6.567|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|0.064|pilastro cancello|
2|206|-1.057,13.125,-0.902|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|0.064|spigolo muretto|
2|207|-1.914,14.565,-0.049|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|0.064|spigolo muretto|
2|208|-3.520,14.490,2.209|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|0.064|spigolo muretto|
2|209|-3.816,15.406,2.945|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|0.064|spigolo muretto|
2|300|36.911,53.952,-42.054|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|1.744|terrazzamento|
2|301|33.567,57.615,-38.487|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=2|1.744|terrazzamento|
2|302|41.300,53.958,-45.360|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|1.744|terrazzamento|
2|303|35.398,59.375,-40.360|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=2|1.744|terrazzamento|
2|304|43.991,55.314,-47.648|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|1.744|terrazzamento|
2|305|37.782,61.418,-42.189|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=2|1.744|terrazzamento|
2|310|98.021,132.376,-112.923|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=2|2.564|muro ingresso|
2|311|57.986,82.180,-60.033|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|3.564|muro|
2|313|32.234,55.751,-34.849|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|2.944|paletto ferro|
2|314|16.173,37.583,-17.387|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|2.944|paletto ferro|
2|315|-3.417,14.846,5.761|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|2.944|paletto ferro|
2|316|141.358,72.911,-148.660|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|2.944|spigolo muro recinzione|
2|317|110.392,43.050,-122.769|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|3.564|risega muro confine|
2|318|52.077,-26.153,-56.289|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|2.944|spigolo muro recinzione|
2|319|1.017,-6.346,2.259|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|2.944|spigolo muro recinzione|
2|320|0.065,-4.051,2.778|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|2.944|spigolo muro recinzione|
2|321|-3.509,-2.454,6.747|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|2.944|spigolo muro recinzione|
2|322|-13.893,2.436,17.164|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=2|2.944|spigolo muro recinzione|
2|323|-15.641,7.161,18.306|0.00000,0.00000,0.00000,0.00000,0.00000,0.00000|PDOP=1|2.944|spigolo muro recinzione|
4|315|204|0|
5|210|3.08|0|spigolo fabbricato|
4|202|203|0|
5|211|1.34|0.65|spigolo fabbricato|
4|203|202|0|
5|212|0|-0.65|spigolo fabbricato|
4|204|315|0|
5|213|0.75|0|spigolo fabbricato|
4|203|0|
5|212|0|
4|400|402|53|
5|PF07/0200/E532|4.95|0|
4|402|400|-42|
5|PF07/0200/E532|4.68|0|
4|504|505|-47|
5|PF24/0200/E532|4.13|0|
4|505|504|52|
5|PF24/0200/E532|4.93|0|
4|505|0|
5|PF24/0200/E532|0|
6|sagoma fabbricato|
7|5|210|211|212|213|RC|AAA|105|
7|0|210|NC|
6|Punti vertice|
7|1|310|PV|
7|1|316|PV|
6|Punti direzione|
7|1|311|PD|
7|1|312|PD|
7|1|313|PD|
7|1|314|PD|
7|1|315|PD|
7|1|317|PD|
7|1|318|PD|
7|1|322|PD|
8|PF24/0200/E532|11700.000000|29200.000000|12|SPIGOLO N.O. POZZETTO IN C.A.|
8|PF24/0200/E532|8.000000|04|COLLIMATO IN TESTA|
8|PF07/0200/E532|12205.237000|29715.463000|32|SPIGOLO FABBRICATO|
8|PF07/0200/E532|9999.000000|04|COLLIMATO AL SUOLO|
8|PF21/0200/E532|10605.000000|29630.000000|12|TRIPLICE INCR. MURI P.LLE 864,865 E VIA PANORAMA|
8|PF21/0200/E532|9999.000000|03|BASE MURO QUOTA STRADA|
Grazie anticipatamente
Francesco