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Custom dual-antenna GNSS systems
use two receivers/antennas (e.g.,
Unicore UM982
,
simpleRTK3B
) to provide precise, centimeter-level positioning and heading, even when stationary, overcoming magnetic interference
. Key components include multi-frequency, all-constellation tracking, active helical or patch antennas (e.g.,
Calian HC860E
,
Taoglas HP24510A
), and specialized mounting for optimal satellite visibility.
-
Capabilities & Advantages:
These systems provide precise heading (often better than
with 1-meter separation). They eliminate the need for magnetometers, which are prone to interference from metal and EMI. They are ideal for robotics, drones, and precision agriculture.
-
Components:
- Receivers: NebulasIV-based modules (e.g., UM982) support dual-antenna RTK.
- Antennas: Active, dual-band antennas (e.g., L1/L2/L5) are required, such as the Calian HC860E or Taoglas HP24510A .
-
Installation Requirements:
- Use two identical antennas for consistent signal, as recommended in this article from SBG Systems .
- Use identical cable lengths.
- Ensure a clear view of the sky.
- Measure the exact lever arm between the antennas.
- Applications: Common in autonomous driving, marine navigation, and surveying.
For specialized needs, custom cable lengths and connector types are available, as seen with the Taoglas A.85 Bolt antenna.
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Heading modules
GNSS Store
https://gnss.store
› collections › heading-rtk-gnss-modules
GNSS Store
https://gnss.store
› collections › heading-rtk-gnss-modules
Discover
Heading RTK GNSS modules with dual-antenna technology
for centimeter-level GPS positioning. Ideal for drones, robotics, and surveying applications.
€70 to €700
Free delivery
30-day returns
LTE - GNSS Dual u.FL Antenna - 100mm
Sixfab
https://sixfab.com
› product › lte-gnss-dual-u-fl-antenna
Sixfab
https://sixfab.com
› product › lte-gnss-dual-u-fl-antenna
LTE – GNSS Dual u.FL Antenna – 100mm
. This single form antenna consists both primary LTE and GPS antennas.
Read more
$6.50
In stock
3-day delivery
30-day returns
Taoglas Unveils Dual-band GNSS Patch-in-a-Patch Antenna
Taoglas
https://www.taoglas.com
› news › taoglas-unveils-incepti...
Taoglas
https://www.taoglas.com
› news › taoglas-unveils-incepti...
Jun 27, 2024
—
The HP5354.A is the first of its kind
antenna
that offers
dual
-band stacked patch performance in a standard 35 x 35 x 4mm form factor.
Read more
Dual Antenna GNSS for Accurate Heading & Positioning
Hexagon
https://hexagon.com
› autonomy-perception-for-ag › du...
Hexagon
https://hexagon.com
› autonomy-perception-for-ag › du...
Get reliable heading and high-accuracy positioning
for slow or static agriculture vehicles or robots with our dual antenna GNSS and IMU-based solution.
What is the principle of dual-antenna heading and what ...
ComNavTech
https://www.comnavtech.com
› about › blogs
ComNavTech
https://www.comnavtech.com
› about › blogs
Jul 18, 2024
—
Dual
-
antenna
heading regards the signal path from the same satellite to the
two antennas
as two parallel paths, and obtains the baseline vector by solving the ...
Read more
GNSS Antennas - Space
Calian
https://www.calian.com
› advanced-technologies › gnss
Calian
https://www.calian.com
› advanced-technologies › gnss
Custom GNSS antenna solutions
. Calian offers a wide range of Antenna & RF Engineering Services including custom antenna solutions, custom tuning of ceramic ...
Read more
An Improved Low-Cost Dual-Antenna GNSS Dynamic ...
MDPI
https://www.mdpi.com
› ...
MDPI
https://www.mdpi.com
› ...
by K Xu
2024
Cited by 1
—
Compared to single-antenna methods,
dual-antenna strategies offer more continuous and stable attitude estimation results
, making them better ...
Read more
Ellipse-D: Smallest RTK INS with Dual Antenna GNSS
SBG Systems
https://www.sbg-systems.com
› INS
SBG Systems
https://www.sbg-systems.com
› INS
Get precise heading and centimeter level position accuracy
with Ellipse-D, the smallest dual-antenna RTK INS with multi-band GNSS. Read more.
TW4421 Wideband Dual Feed GPS/GLONASS Antenna
NavtechGPS
https://www.navtechgps.com
› Products
NavtechGPS
https://www.navtechgps.com
› Products
The Tallysman TW4421 by Calian is a low-cost
dual
-feed GPS & GLONASS magnetic mount
antenna
covering the GPS L1, GLONASS G1 and SBAS (WAAS, EGNOS & MSAS).
$52.99
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People also ask
How accurate is dual frequency GNSS?
In clear environments, single-band GNSS might give you an accuracy of around 2 to 5 meters, but dual-band GNSS can get that down to
as good as one meter
. L5 signals are typically less affected by multipath interference, which happens when signals bounce off buildings and other structures.
Mar 27, 2025
What is dual-band GNSS? - Quectel
Quectel
https://www.quectel.com
› blog › what-is-dual-band-gnss
Quectel
https://www.quectel.com
› blog › what-is-dual-band-gnss
What are the 4 types of GNSS?
The Four Main GNSS Systems:
-
GPS (Global Positioning System) (United States):The oldest and most widely known system, operational for global use since the mid-1990s.
-
GLONASS (Globalnaya Navigatsionnaya Sputnikovaya Sistema) (Russia):Russia's system, providing a strong complement, especially in northern latitudes, often used as a backup to GPS.
-
Galileo (European Union):A highly accurate, civilian-controlled system known for its dual-frequency capabilities, improving performance in challenging environments.
-
BeiDou (BDS) (China):China's system, providing global coverage and unique features, becoming fully operational globally in 2020.
Other Systems:
-
Regional Systems:
Japan's QZSS and India's NavIC (IRNSS) offer regional augmentation, improving accuracy in their respective areas.
How They Work Together:
-
Satellite Constellations:
Each system uses a network of satellites orbiting Earth.
-
Signal Reception:
Receivers track signals from multiple satellites across different systems.
-
Improved Accuracy:
Combining signals from these various global and regional systems (multi-GNSS) provides more satellites in view, leading to better accuracy, reliability, and resilience against interference, explains
National Geodetic Survey
and Unicore Communications.
AI responses may include mistakes.
Learn more
What are the Types of GNSS? - Unicore Communications，Inc.
Oct 24, 2022 —
Galileo has the unique feature of using dual frequencies, allowing receivers to correct for ionospheric delays more ef...
Unicore Communications
Satellite navigation - Wikipedia
Satellite navigation (satnav) or satellite positioning is the use of artificial satellites for navigation or geopositioning. A glo...
Wikipedia
What are the various GNSS systems? - GPS
Nov 20, 2019
Geospatial World
What are Global Navigation Satellite Systems? | NovAtel
There are four main constellations in orbit – GPS, GLONASS, Galileo and BeiDou as well as two regional systems QZSS and IRNSS – an...
NovAtel
An Overview of the 5 GNSS Systems - COROS Support
Oct 16, 2024 —
Because of the greater network strength, GLONASS is generally used as a backup to GPS when signals are lost. Table of ...
COROS
Multi-GNSS Processing Software - National Geodetic Survey (NGS)
As of 2024, four Global Navigation Satellite Systems (GNSSs) are fully operational: the United States' Global Positioning System (
National Geodetic Survey (NGS) (.gov)
Global Navigation Satellite System (GNSS) - Windward
Galileo, European Union – the European Union's Galileo system was developed by the European Space Agency and is currently operated...
Windward
Exploring GPS, GLONASS, Galileo, BeiDou, NavIC, and QZSS - Taoglas
Jun 28, 2024 —
Introduction. Global Navigation Satellite Systems (GNSS) have transformed navigation, positioning, and timing across v...
Taoglas
Show more
Can you split a GPS antenna signal?
Large, rack mount splitters, such as the GPS Networking NRMALDCBS1X32, can split a single antenna input to 2 to 32 receivers at once
while amplifying that signal to compensate for line loss. Additionally, Splitters can be chained together to provide further outputs.
Sep 8, 2022
GPS Antenna Splitter - Applications and Benefits - NavtechGPS
NavtechGPS
https://www.navtechgps.com
› gps-antenna-splitter-applic...
NavtechGPS
https://www.navtechgps.com
› gps-antenna-splitter-applic...
What is the lifespan of a GNSS antenna?
2. Your existing GNSS antenna is nearing the end of its useful life. Quality instruments that are well maintained and kept current on firmware can give you extended operating performance beyond the typical
three- to five-year
lifespan of modern digital technology.
Oct 23, 2024
Five Red Flags That Indicate It's Time to Buy a New GNSS Receiver
Leica Geosystems Surveying
https://pure-surveying.com
› 2024/10/23 › five-red-flags-...
Leica Geosystems Surveying
https://pure-surveying.com
› 2024/10/23 › five-red-flags-...
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