NSL’s GNSS Integrity and Signal Monitoring Observatory (GISMO) tool is a suite of software that analyses GNSS performances. It obtains raw measurement data via internet protocol from static reference sites and carries out advanced positioning and integrity calculations on this data. GISMO is regularly used with data from private networks as well as IGS (worldwide), EUREF (Europe), OSNet (UK), regional networks (UK & Netherlands) and the EGNOS RIMS via EDAS.

NSL offer GNSS monitoring services to customers whose products are based on GNSS and have Service Level Agreements or need to implement contingencies in case of underperforming systems. This includes: Road/Congestion Charging Aviation Timing Systems Location Based Services Tracking and Tracing of High-value or Hazardous Goods Offender/Probation Monitoring Law Enforcement and Emergency Services Structural and Land Movement Monitoring Examples of these services include GNSS Monitoring, GNSS Assurance and EDAS monitoring.