u-blox NEO-D9C QZSS L6 Correction Data Receiver brings QZSS Centimeter Level Augmentation Service (CLAS) support to u-blox GNSS modules to enable centimeter-level navigation. This receiver can also track the experimental MADOCA service transmitted on the QZSS L6 signal. The NEO-D9C satellite receiver decodes the satellite signals and outputs a correction stream, enabling a high-precision GNSS receiver to reach accuracies down to the centimeter level. The NEO-D9C implements u-blox security principles and advanced security features, including signature and anti-jamming mechanisms, thus allowing reliable GNSS positioning in end-user products. The NEO-D9C-00B can be used to build a complete and stand-alone high-precision system when combined with other u-blox products. This provides access to free high-accuracy correction services and, ultimately, centimeter-level GNSS accuracy for the users.