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eLORAN: The most powerful and cost effective back-up/co-primary technology for GPS/GNSS resilience and protection of Critical Infrastructure

eLORAN

LORAN, short for long range navigation, is a hyperbolic radio navigation system developed in the United States during World War II. eLORAN is a fourth generation LORAN technology and incorporates a digital signal, differential correction capability and a low bandwidth one-way data channel.

What is eLORAN?

eLORAN is the 21st century evolution of a well-established technology known as LORAN-C which was operational for over 60 years. A trusted positioning, navigation and timing system initially developed during World War II, LORAN-C provided long range and highly accurate wireless signals supporting navigation for aircraft and maritime applications globally. Improved over the last 20 years, enhanced LORAN, or “eLORAN”, utilizes the same low frequency, high power radio signals transmitted from land-based towers. A single tower provides users with a highly accurate timing signal, and with 3 towers “in view”, a user device can derive its 2D location (latitude and longitude) through a technology known as hyperbolic positioning. This is all accomplished through use of modern, solid state transmitter systems utilizing advanced frequency and timing solutions.

What is eLORAN?

eLORAN is the 21st century evolution of a well-established technology known as LORAN-C which was operational for over 60 years. A trusted positioning, navigation and timing system initially developed during World War II, LORAN-C provided long range and highly accurate wireless signals supporting navigation for aircraft and maritime applications globally. Improved over the last 20 years, enhanced LORAN, or “eLORAN”, utilizes the same low frequency, high power radio signals transmitted from land-based towers. A single tower provides users with a highly accurate timing signal, and with 3 towers “in view”, a user device can derive its 2D location (latitude and longitude) through a technology known as hyperbolic positioning. This is all accomplished through use of modern, solid state transmitter systems utilizing advanced frequency and timing solutions.

General Information

eLORAN is recognized as the foundational technology to back-up and support the GPS/GNSS system. Transmitting at 90-110 kilohertz and operating on a digital channel, eLORAN exceeds the accuracy, availability, integrity, and continuity performance requirements for all modern PNT applications.

eLORAN is a Stratum 1 source of time, phase, and frequency and surpasses synchronization user requirements for sectors such as:

  • Telecommunications (including 5G)
  • Financial services
  • Power industry synchro-phasers
  • First responders and military network communications

In addition, eLORAN positioning & navigation accuracy support aviation non-precision instrument approaches, maritime harbor navigation and approach maneuvers, land-mobile vehicle navigation, and many location-based services on a local, regional and even national level.

How It Works

Learn More About eLORAN

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