GPS / GNSS Antenna

Reliable Satellite Reception for Precise Time Synchronization

A GPS/GNSS antenna receives highly accurate time signals from navigation satellites and delivers them to a compatible Master Clock, NTP Time Server or PTP Grandmaster.

Although commonly called a GPS antenna, this type of receiver can support multiple global navigation satellite systems, including GPS, GLONASS, BeiDou and Galileo. Using several satellite constellations improves signal availability and provides a dependable reference for mission-critical time synchronization.

How It Works

The antenna is normally installed outdoors in a location with a clear view of the sky.

It receives precise satellite timing signals and sends them through a coaxial cable to the connected time server or Master Clock. The timing equipment then distributes synchronized time to clocks, servers, CCTV systems, access control, building-management systems and other connected devices.

This provides an independent and traceable source of time without relying solely on public internet time services.

Key Benefits

• High-Accuracy Satellite Time — Receives precise timing information from global navigation satellites for dependable system synchronization.
• Multi-Constellation Reception — Supports GPS, GLONASS, BeiDou and Galileo signals, helping maintain reliable reception across different operating conditions.
• Strong Signal Performance — An integrated low-noise amplifier helps improve signal quality over the antenna cable and supports stable reception.
• Weather-Resistant Construction — Designed for rooftop and outdoor installation with a durable housing suitable for exposed environments.
• Suitable for Critical Systems — Provides a trusted time reference for transport, healthcare, data centres, utilities, industrial facilities, government buildings and commercial infrastructure.

Typical Applications

GPS/GNSS antennas are commonly used with:

• Master Clock systems
• NTP and SNTP Time Servers
• PTP Grandmasters
• Railway and metro timing systems
• Airport infrastructure
• Data centres and server networks
• CCTV and access-control systems
• Building-management systems
• Industrial automation
• Utility and telecommunications networks

Installation Considerations

For reliable operation, the antenna should be installed:

• Outdoors with a clear view of the sky
• Away from large obstructions and sources of interference
• Using suitable low-loss coaxial cable
• With appropriate mounting hardware
• With lightning and surge protection where required

For exposed rooftop installations, an inline lightning arrestor is recommended to help protect the connected timing equipment from electrical transients.

Why Choose SWS?

SWS provides complete satellite-referenced time synchronization solutions, including:

• GPS/GNSS antenna supply
• Antenna location assessment
• Mounting and installation
• Coaxial cable routing
• Lightning protection
• Master Clock and Time Server integration
• Signal-strength verification
• Testing and commissioning
• Preventive maintenance
• Fault diagnosis and technical support

Need Help With Your Time Reference System?

Contact SWS for assistance selecting and installing the appropriate GPS/GNSS antenna for your Master Clock or Time Server system.