AUDITOR · Advanced Multi-Constellation EGNSS Augmentation and Monitoring Network and its Application in Precision Agriculture

The goal of AUDITOR is the implementation of novel precise-positioning techniques based on augmentation data in customGNSS receivers to improve the performance of current augmentation services and reducing costs. These techniques arealready patented by the consortium and proven to offer better accuracy with faster convergence times than solutionscommercially available. More sophisticated atmospheric models will be implemented to provide better corrections ofionospheric errors and further increase accuracy. All these advances will be integrated in a software demonstrator that willuse public data from GNSS networks to generate these correction data streams. These new receivers will enable cost-effective precision agriculture services to farmers, especially those with small and medium-sized businesses in areas of Europe.The custom dual-frequency receiver module will follow an innovative approach by porting a GNSS software-defined receiverto an embedded system that will integrate hardware accelerators to enable real-time operation in a low power system. Theform factor and capabilities of the resulting receiver will be comparable to those of existing professional receivers in themarket, while retaining all the advantages of software receivers: modularity, scalability, upgradability, and flexibility. Besidesproviding multi-frequency multi-constellation support, this advanced receiver will allow very low level access to key internalseven at sample level, enabling the integration of other complementary techniques like interference analysis and monitoringor authentication using remote servers for encrypted bands. The fact that the software layer will be the evolution of an existingand successful open-source project, GNSS-SDR, will allow GNSS developers and researchers to customize the code of thereceiver to tailor it to their own applications or test their algorithms using this flexible receiver module, from reflectometry toultra-tight coupled GNSS/INS systems.