Zusammenfassung
Summary
The surveying authorities of the States of the Federal Republic of Germany (AdV) operate the satellite positioning service »SAPOS« as a joint project and thus provide the current, official spatial reference for everyone using modern GNSS technology. Thus, the user can eliminate a temporary reference station and solve spatial reference tasks more economically and efficiently. This is considered as an infrastructure basic provision and as part of the legal remit of the German state survey. The paper will address SAPOS-services and -standards, quality management aspects, future trends and steps to use Galileo.