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Global Positioning System Next Generation Operational Control System (GPS OCX)

Advanced. Protected. Connected.

The benefits of the new GPS OCX:

Dramatic Performance Improvement

The GPS system and its signals are measured by Accuracy, Availability, and Integrity. By all three measures, the new GPS OCX system will deliver enormous improvements and enhancements, thereby dramatically increasing the performance and effectiveness of the entire GPS system. For example, the new Kalman filter that is at the heart of the GPS OCX navigation solution will double the accuracy of the current system for all users. GPS OCX lifts the current limit on the number of satellites in the GPS constellation, allowing more satellites and better geometry in hard to reach areas such as urban canyons and mountainous terrain. In addition, digital signatures are employed on all critical OCX external interfaces, to ensure the information has not been tampered with and can be trusted by users.

Unparalleled Cyber Protection

With cyber threats to the US and its infrastructures growing daily, it is absolutely essential that the GPS system be fully secure and protected from any possible attempt at hacking or otherwise interrupting or compromising the signals and information delivered from the system. The new GPS OCX system is at the forefront of implementing DODI 8500.2 Information Assurance Standards that provide Defense in Depth to protect the GPS mission from all types of threats. OCX will raise the level of protection to unprecedented heights, using a wide variety of technologies and techniques which are compliant with the best practices and standards of the US military and government cyber security experts.

Unparalleled Cyber Protection

Most importantly, robust security and information assurance were designed and built into the system, enabling it to be integrated with every single aspect of the system. These new information assurance provisions in GPS OCX will result in the most secure ground system possible.

Enabling Secure Information Sharing

In today's hyper-connected world, where almost everything can be viewed as a node on some network, it is essential to be able to share information with whoever needs it – securely, quickly, and automatically. In the past, valuable system information, such as timely clock and satellite position corrections, has been available only through rigid, point-to-point interfaces to a very small number of specific users. GPS OCX, although backward compatible with existing point-to-point interfaces for current users, will evolve to a single, net-centric interface that enables secure and authenticated sharing of valuable system information with a broad range of certified, net-connected users quickly and accurately when and where it is needed, significantly improving timeliness and quality of service.

Effective Use of the Most Modern Civil and Military Signals

One of today's key GPS challenges is that the current operational control system is unable to process the newest types of navigation signals and make them operationally available for military and civilian users of the GPS system. Although there are nearly a dozen satellites in orbit that are capable of broadcasting the new M-code military signal, the current control system is not capable of bringing them online.

At one time, America's GPS system was the only system of its type in the world. That is no longer the case. GPS OCX enables the new internationally compatible L1C civil signal that is focused on the civil user community.

GPS OCX also employs a new architecture that works with both legacy and new types of signals to enable full utilization of current signal capabilities. For example, the current control system cannot process M-Code, L1C, L2C, and L5 signals; all of these can be processed by GPS OCX. Activation of the new civil signals will bring the same multiple-frequency capabilities to civil and commercial users that have been available to military users for years, providing 10X accuracy improvements by eliminating atmospheric distortions, and providing signal redundancy to mitigate radiofrequency interference.

A Flexible, Open Architecture Built for the Future

Unlike previous generations of GPS ground systems, which were built on proprietary, closed architectures, the new GPS OCX ground system represents a departure from the past and a major leap forward into the future of technology. By embracing open systems, service-oriented architecture, modular sub-systems, and the ability to easily integrate new capabilities and signals as they become available, the new GPS OCX ground system delivers significant advantages in flexibility and resolvability to meet future needs. It also will save the US Government money in the future by reducing the crew size required for day-to-day operations through automation, and eliminating the need to re-architect the system as the GPS mission evolves.

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