BlueSky^® Technology

• Identifies and protects GNSS systems from spoofing and jamming 
• Integrates seamlessly between existing GNSS antenna and GNSS system(s)
• Built-in WebGUI provides simple to use tools for antenna surveying, cable compensation as well as quick access to dashboards containing GNSS observables

• Fortified network interface ensures the security of time in compliance with the fundamental pillars of Zero Trust
• Configurable user and device privileges with two-factor authentication using RADIUS, TACACS+ and LDAP directory services
• Hardened web GUI with X.509 CA-signed certificates and robust Transport Layer Security (TLS) 1.2

• Embedded SkyWire™ technology to measure and verify the accuracy and precision of geographically distributed clocks
• BlueSky technology anomaly detectors with enhanced charting for monitoring additional GNSS observables
• Enhanced interoperability with TimePictra software provides automated and real-time posting of performance data for BlueSky and SkyWire technologies

The IEEE^® P1952 standard outlines resilience levels for equipment used for Position Navigation and Timing (PNT). The BlueSky GNSS Firewall 2200 enables designers of systems for critical infrastructure to achieve the highest degrees of resilience, including the requirements outlined in Level 5 of the P1952 standard.

A programmable anomaly detector, which detects suspicious time and position inconsistencies, is at the core of the BlueSky GNSS Firewall. This detector validates the GNSS subframes for spoofing incidents based on defined data validation rules built into the BlueSky GNSS Firewall. New validation rules are added to every new BlueSky GNSS Firewall software release.

TimePictra software provides data visualization for BlueSky technology’s GNSS observables and SkyWire technology’s clock comparison measurements.  Organizations can configure, monitor and visualize the health of their timing infrastructure to achieve a higher level of timing security and resilience.  The software’s dashboard allows users to view GNSS threats detected by BlueSky technology and clock alignment verification by SkyWire technology all on the same screen.

Upgrading the BlueSky GNSS Firewall with the MAC enhances anomalous GNSS detection capabilities while also extending holdover performance of the hardened GNSS signal output for multiple days.

The 10 MHz or 1 PPS input allows you to connect autonomous references sources, such as our 5071B or TimeCesium® cesium clock products, to extend the holdover performance in case of a complete, long-term loss of GNSS reception.

Just as a network firewall detects and protects against network attacks, a GNSS firewall identifies jamming and spoofing threats and alerts transportation operations of untrusted sky-based signals.

GNSS interruptions can be either unintentional or intentional. Adversaries may attempt to disrupt Position, Navigation and Time (PNT) solutions derived from GNSS in one of two ways: 

• Spoofing, which makes a GPS receiver calculate a false position
• Jamming, which overpowers GPS satellite signals locally so that a receiver can no longer operate.

The BlueSky GNSS Firewall provides real-time protection against a wide range of these types of threats.

Critical infrastructure’s dependence on GNSS-based PNT continues to grow exponentially. Our BlueSky GNSS Firewall, in combination with network time protocol distribution, atomic clocks, timescale technology and software management and monitoring, provides a comprehensive solution for critical infrastructure operators.

To enhance the security provided by the BlueSky GNSS Firewall, the network management interface must meet the increasingly stringent security requirements of critical infrastructure. In addition to providing robust protection against live-sky jamming and spoofing threats, the BlueSky GNSS Firewall now features a highly secure Trusted Time network management interface, further enhancing its defense against cyber threats.

SkyWire technology utilizes GNSS signals as a virtual wire, instead of a timing source, to enable precise time comparison between geographically separated locations. It provides a cost-effective connection to ensure traceability to an authoritative time source.