Ultra-Wideband Technology (UWB): The Most Accurate Real-Time Location Data
Ultra-wideband (or UWB, ultra wideband or ultra wide band) is becoming a major trend in wireless communication and real-time location systems (RTLS). It’s fast. It’s reliable. It delivers precise location data even in conditions where other wireless technologies struggle.
What is UWB Technology
What is UWB?
UWB stands for “ultra-wideband”. It’s a radio technology designed for one main purpose: measuring distance with high precision.
UWB lets two devices communicate with each other through short, fast pulses of radio energy. By measuring how long these pulses take to travel between devices (time of flight) UWB software can calculate position in real time. It works quickly and with impressive accuracy.
For more complex tasks, UWB needs a network of devices. These include wireless tags attached to assets, vehicles, or work-in-progress items, and anchors mounted on walls or ceilings. The anchors receive the radio signals sent by the tags. Together, they create a precise, UWB indoor positioning system.
UWB stays accurate even around steel structures, heavy machinery and constant movement. That makes it a strong fit for demanding industrial environments where other signals fail.
If you want to see it in action, read our case studies to learn how manufacturers worldwide use RTLS powered by UWB.
What Are the Key Features of UWB Technology?
- High localization precision (decimeter-level)
- Stays accurate even when signals bounce off metal or machinery
- No interference with other radio communication systems
- Resistant to noise
- Use of low power transceivers
Benefits of UWB Technology: Accuracy in All Circumstances
Precise, accurate, reliable
With 30 cm accuracy, 99.9% of the time, UWB provides some of the most reliable location data available today.
It’s ideal for secure real-time UWB tracking in electronics and industrial automation, i.e., locks that open only when you’re right at the doorstep.
Works next to Wi-Fi and Bluetooth
UWB doesn’t interfere with other wireless technologies such as Bluetooth, Wi-Fi, and RFID.
You can use accurate, real-time UWB localization while streaming audio or running other wireless tools at the same time.
Resistance to harsh conditions
UWB can tell the difference between direct and reflected signals. This makes it highly reliable in complex spaces or areas with strong wireless interference.
It offers reliable performance in industrial halls full of metals, concrete and dust.
Cost–to–value ratio
UWB offers an excellent value, especially for operations that rely on precise, reliable data to meet quality standards.
Its versatile infrastructure supports numerous use cases, allowing it to replace multiple systems.
UWB Applications: Industrial Efficiency, Smart Homes
UWB systems connect devices, track objects, and monitor people’s movements in real-time. All with up to 30 cm accuracy so you can locate a single box of bolts in a 15,000 m2 manufacturing plant. But UWB goes far beyond tracking items. With this kind of precise, reliable technology, you can unlock many other powerful applications.
What is UWB used for?
UWB is perfect for industrial applications and that’s why we at Sewio are so passionate about it!
How Does UWB Work?
UWB Definition: Ultra-Wide Bandwidth
UWB sends extremely short pulses across a very wide range of frequencies. This wide bandwidth lets devices measure distance with high precision. The rule is simple: the wider the bandwidth, the more accurate the distance measurement. That’s why UWB sits at the top when it comes to accuracy.
UWB typically uses about 500 MHz of bandwidth, which is far more than most wireless technologies. Because of this, UWB localization can reach accuracy levels of 30 cm in real-world conditions.
This precision, combined with the ability to work without interfering with other radio technologies, makes UWB real-time positioning a strong choice for in complex environments.
Time of Flight (ToF) for Accuracy
A key advantage of UWB is its ability to quickly tell the difference between direct signals and reflected ones. Its pulses are extremely short, less than 2 nanoseconds. UWB software measures how long each pulse takes to travel between devices, a method called Time of Flight (ToF).
Thanks to this, UWB delivers much higher accuracy than Wi-Fi or Bluetooth, which rely on less precise signal-strength measurements. This approach also keeps UWB reliable in environments filled with metal structures, machinery, and other obstacles that reflect the signal.
UWB Localization Techniques
Time Difference of Arrival (TDoA) for scalability
TDoA is ideal for industrial use because it can cover very large areas and support thousands of devices. The method works by measuring how quickly a signal reaches several receivers. By comparing the arrival times, the system can calculate the device’s position.
The tag only needs to send one short signal, which keeps battery use low and allows it to last for years. However, this method does require a network of anchors and precise synchronization.
See how Time Difference of Arrival works
Two-way Ranging (TWR) for the exact distance
Two-Way Ranging (TWR) is common in consumer applications like digital car keys. In this method, two devices exchange signals and measure how long it takes for the signals to travel back and forth. From this, the system can calculate the exact distance between them.
TWR is simple to implement and doesn’t need synchronized clocks like TDoA. But it doesn’t scale well and it drains the battery faster.
Angle of Arrival
To determine a device’s exact position, you often need more than distance, you also need direction. That’s why TWR is sometimes combined with Angle of Arrival (AoA). AoA helps systems understand where a signal is coming from. This way, it supports advanced features like collision avoidance and navigation in larger areas.
UWB Standards Ensure Security and Compatibility
- IEEE 802.15.4 standard
- Omlox
- FiRa
- Car Connectivity Consortium
The Foundation for UWB Technology
The IEEE 802.15.4 standard defines how devices communicate using low-power, short-range signals. In simple terms, it makes sure UWB-enabled devices can talk to each other in a consistent, reliable way. For you, this means strong performance and high accuracy, no matter which manufacturer makes the device.
Standards for Specific User Environments
Omlox sets the rules for seamless interoperability in UWB-based RTLS for industrial environments, uniting manufacturers of UWB chips and equipment. Sewio RTLS uses the Omlox standard to ensure that our customers get the latest features for compatibility in industrial-grade real-time location systems (RTLS).
FiRa focuses on achieving compatibility for mobile phones and personal devices. CarConnectivity Consortium plays a similar role in the car industry, creating standards for secure and consistent UWB use in cars.
UWB shows you exactly where everything is, the moment it happens. Just think about how many parts of your operation could run smoother with that kind of insight!