Driver to decode NMEA-0183 $NDPPU and $PADN,ATT sentences containing navigation position, baseline lengths and attitude information. If the $NDPPU message is valid, a USBL observation is computed for baseline one. If the $ADN,ATT sentence is also valid, another USBL observation is computed for baseline two. This driver can be used with the ADX Portable Pilot Unit from AD Navigation, both the ADX XR three pod system and the ADX XM four pod system.
Apart from reading and decoding these sentences, this driver can also send commands to the ADX MPU main CPU and the MPU dual modem. This functionality is used by the driver to display status information for both modems and to select an RTK network.