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What is a GNSS splitter?

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Author: ZHENG GUOHUI

Release Time:2024-07-25 10:54


A GNSS splitter, also known as a GPS splitter or GNSS signal splitter, is a device used to distribute GNSS signals from one antenna to multiple receivers or devices. GNSS encompasses various satellite navigation systems, including Beidou ,  GPS, GLONASS, Galileo and others.

An gnss splitter like these: 

GEMS GPS and gnss splitter GS12

GEMS GPS and gnss splitter GS12

 

Here are the key aspects and functions of a GNSS splitter:

  1. Signal Distribution: The primary function of a GNSS splitter is to split the incoming GNSS signal from a single antenna into multiple outputs. This allows multiple GNSS receivers or devices to simultaneously receive signals from the same antenna without each requiring its own dedicated antenna.

  2. Frequency Range: GNSS splitters typically cover the frequency bands used by GNSS systems, which include GPS L1 (1575.42 MHz), GPS L2 (1227.60 MHz), GLONASS, Galileo, and BeiDou frequencies. The splitter should support these frequencies to ensure compatibility with various GNSS devices.

  3. Impedance Matching: Like any RF (Radio Frequency) device, GNSS splitters must match the impedance of GNSS antennas and receivers, usually 50 ohms. Proper impedance matching ensures minimal signal loss and prevents signal reflections that could degrade GNSS performance.

  4. Insertion Loss and Isolation: Insertion loss refers to the reduction in signal strength that occurs as the signal passes through the splitter. High-quality GNSS splitters will have low insertion loss to maintain strong signal integrity. Isolation refers to the degree to which the splitter separates signals between its output ports, minimizing interference between connected devices.

GEMS GPS and gnss splitter GS112

The GS112 is a powerful GNSS splitter for military aviation applications. Sharing the GNSS antenna.

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