AccuBeat
Israeli designer and manufacturer of rubidium atomic clocks, GNSS anti-spoofing systems and precision time and frequency solutions for defense, space, telecom and critical infrastructure.
Last updated September 26, 2026
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Overview
AccuBeat Ltd. is an Israeli high-tech company specializing in the development and manufacture of exceedingly accurate frequency and timing solutions built around rubidium atomic clock technology. Founded in December 1993 by electronics engineer Benny Levy, who serves as CEO, and physicist Dr. Avinoam Stern, the company is headquartered in the Har Hotzvim industrial park in Jerusalem. In 2011, Rafael Advanced Defense Systems, Israel's leading defense contractor, acquired 50% ownership of the company. AccuBeat's product portfolio spans rubidium frequency standards and oscillators, GPS/GNSS-disciplined time and frequency systems, NTP/PTP network time servers, ruggedized time and frequency products for military platforms, portable atomic clocks for time dissemination, space-qualified products, and a suite of patented GNSS anti-jamming and anti-spoofing cyber products including the proprietary Time FireWall™ for critical infrastructure protection. The company describes its rubidium atomic clock technology, with optional GPS disciplining, as delivering frequency accuracy in the range of 10⁻¹², frequency stability in the range of 10⁻¹³, and time accuracy in the range of nanoseconds. AccuBeat's customers include the United States Air Force (USAF), the European Space Agency (ESA), all branches of the Israeli Defense Forces (IDF), Europe's Galileo GNSS program, Tier 1 telecommunications companies, and numerous military, homeland security, infrastructure and government programs worldwide. Its atomic clocks form an integral part of the ground segment of Europe's Galileo navigation system, and its Ultra Stable Oscillator (USO) was selected by ESA for deep space exploration, flying aboard the JUICE (Jupiter Icy Moons Explorer) mission launched in April 2023. In the commercial field, AccuBeat equipment is found in telecommunications equipment, SDH networks, cellular base stations, telemetry appliances, calibration and testing solutions, and research facilities worldwide. AccuBeat positions itself as a world leader in rubidium frequency standards and GPS-disciplined time and frequency products, with over 25–30 years of experience developing both commercial off-the-shelf (COTS) and fully customized solutions. Its products are designed to meet stringent MIL-STDs and are deployed in tactical applications including combat planes, UAVs, transport aircraft, helicopters, ships, submarines, missile and anti-missile platforms, and ground mobile vehicles. The company holds several registered patents, particularly around its anti-jamming and anti-spoofing technologies that detect attacks on GPS/GNSS signals and ensure continuous, uninterrupted accurate timekeeping even in GPS/GNSS-denied or threatened environments.
History
AccuBeat Ltd. was founded in December 1993 by electronics engineer Benny Levy, who serves as the company's CEO, and physicist Dr. Avinoam Stern. The company was established as an Israeli high-tech firm focused on the development and manufacture of atomic clocks, specifically rubidium-based frequency standards capable of accuracy measured in billionths of a second. Its manufacturing plant is located in the Har Hotzvim industrial park in Jerusalem. Over more than three decades, AccuBeat built a portfolio of rubidium atomic clock technology and expanded into adjacent timing and synchronization domains. The company developed rubidium frequency standards and oscillators, GPS/GNSS-disciplined time and frequency systems, NTP/PTP network time servers, ruggedized products for military platforms, portable atomic clocks for time dissemination, and space-qualified products. It also developed and patented anti-jamming and anti-spoofing technologies capable of detecting attacks on GPS/GNSS signals and maintaining continuous, uninterrupted accurate timekeeping even in GPS/GNSS-denied or threatened environments. Among these patented solutions is the Time FireWall™, designed to protect critical infrastructures. A significant ownership milestone occurred in 2011, when Rafael Advanced Defense Systems, Israel's leading defense contractor, acquired 50% of the company. This aligned AccuBeat more closely with Israel's defense industrial base while it continued to serve commercial and international customers. AccuBeat's technology has been adopted in high-profile programs. Its atomic clocks form an integral part of the ground segment of Europe's Galileo GNSS navigation system, with the AR81 — a 1U, 19-inch rack-mounted unit featuring an ultra-high-stability, ultra-low-phase-noise rubidium frequency standard with six 10 MHz outputs and two redundant power supplies — serving in Galileo ground equipment since the initial stages of the project. The company was also selected by the European Space Agency to develop and produce an Ultra Stable Oscillator (USO) for deep space exploration. AccuBeat's USO, a high-stability quartz crystal oscillator utilizing a high-Q crystal resonator with high temperature stability in the range of 100 microkelvin and an Allan Deviation substantially better than the required specification of 5E-13 at integration constants of 1 to 1000 seconds, was integrated into ESA's JUICE (Jupiter Icy Moons Explorer) satellite. The JUICE mission launched in April 2023, traveling some 600 million kilometers to Jupiter to explore the planet's atmosphere and study its icy moons. AccuBeat has earned the trust of customers including the United States Air Force (USAF), the European Space Agency (ESA), all branches of the Israeli Defense Forces (IDF), and many Tier 1 integrators. Its products are deployed in tactical applications including combat planes, UAVs, transport aircraft, helicopters, ships, submarines, missile and anti-missile platforms, and ground mobile vehicles, and are designed to meet the most stringent MIL-STDs. In the commercial field, AccuBeat equipment can be found in telecommunications equipment, SDH networks, cellular base stations, telemetry appliances, calibration and testing solutions, and research facilities worldwide. The company holds several registered patents.
AccuBeat founded by Benny Levy and Dr. Avinoam Stern as an Israeli high-tech company developing and manufacturing atomic clocks.
Rafael Advanced Defense Systems acquires 50% ownership of AccuBeat.
AccuBeat's Ultra Stable Oscillator (USO) launched aboard ESA's JUICE mission to Jupiter.
Products and positioning
World leader in rubidium atomic clocks and GPS-disciplined time and frequency products, delivering patented anti-jamming and anti-spoofing solutions for defense, space, telecommunications and critical infrastructure.
Rubidium Frequency Standards and Oscillators
High-precision, compact rubidium atomic clocks providing frequency accuracy in the range of 10⁻¹² and stability in the range of 10⁻¹³.
NTP/PTP Time Servers
Network time servers supporting NTP and PTP protocols for time distribution and synchronization.
Time FireWall™
Patented solution for protecting critical infrastructures from GPS/GNSS jamming and spoofing attacks.
Ultra Stable Oscillator (USO)
High-stability quartz crystal oscillator for deep space exploration, selected by ESA for the JUICE Jupiter mission.
AR81 Rubidium Frequency Standard
1U, 19-inch rack-mounted unit with ultra-high-stability, ultra-low-phase-noise rubidium frequency standard, six 10 MHz outputs and two redundant power supplies, used in Galileo ground segment.
Portable Atomic Clocks
Portable solutions for time dissemination and clock synchronization in the field without GNSS data.
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