Analiza skladnosti D48/GK- in D96/TM-koordinat zemlji kokatastrskih to k v Pomurju

Predstavljena je analiza skladnosti D48/GK- in D96/ TM-koordinat za ve kot 62.000 zemlji kokatastrskih (ZK-) to k v Pomurju, ki so bile dolo ene po1. januarju 2008, torej v skladu z novim Zakonom o evidentiranju nepremi nin. Tak na analiza je izvedljiva brez dodatnih terenskih meritev – z uporabo kakovostnega modela transformacije. Kot referen ni model je bila uporabljena dr avna trikotni ka transformacija, razli ica 3.0. Med razlogi za neskladje D48/GK- in D96/TM-koordinat ZK-to k glede na referen ni transformacijski model so lahko slaba natan nost ali groba napaka v izmeri D96/ TM-koordinat (GNSS-izmera) in D48/GK-koordinat (klasi na izmera). e pogosteje kot z neposredno izmero pa so D48/GK-koordinate to k dolo ene posredno – s transformacijo. Tu so razlog za neskladje nekakovostni transformacijski parametri. Poleg nekakovostnih veznih to k je vzrok lahko premajhno tevilo uporabljenih veznih to k ali njihova neustrezna razporeditev. Neskladje koordinat ZK-to k je lahko tudi posledica lokalnih anomalij v obstoje i poligonski/ linijski mre i ali pa slabe natan nosti uporabljenega referen nega transformacijskega modela. Cilja analize skladnosti sta kontrola kakovosti dolo anja koordinat ZK-to k (tj. dela geodetskih podjetij) in tudi kontrola kakovosti modela trikotni ke transformacije. Za dosego teh ciljev je bila na izbranih lokacijah znotraj testnega obmo ja izvedena tudi neodvisna terenska izmera ; A consistency analysis of D48/GK and D96/TM coordinates of more than 62,000 cadastral boundary (CB) points in the Mura region, which were determined after 1st January 2008, i.e. according to the new Real Estate Recording Act, is presented. Such an analysis can be realized without any additional measurements being taken, but only by using a high quality transformation model. The country-wide triangle-based transformation, Version 3.0, was used as a reference model. The reasons for the inconsistency between D48/GK and D96/TM coordinates of CB points according to the reference transformation model are low accuracy or gross errors in D96/ TM coordinates (GNSS measurements) and D48/ GK coordinates (classical measurements). Rather than in direct measurement, D48/GK coordinates are obtained indirectly by using transformation. In that case, the inconsistency is caused by poor quality transformation parameters. In addition to possible low quality tie points, there may be an insufficient number of tie points used, or their inadequate spacing. The inconsistency between the coordinates of CB points could also be caused by some problems in the control network and low