Can Bluetooth measure distance accurately?

Can Bluetooth measure distance accurately?

Right now, Bluetooth systems track items by measuring their signal strength — but they have a wide accuracy range of one and 10 meters. That’s great for locating missing gadgets, but it could also be used to improve the accuracy of tracking in indoor spaces where Bluetooth beacons are used to help people navigate.

How is Bluetooth range measured?

Beacon technology generally estimates the distance between devices using the received signal strength (RSSI). Localization of Bluetooth devices is done by combining the distance estimate to several beacons, mounted at fixed and known locations, using triangulation with at least 3 anchors.

How far is Bluetooth range?

approximately 30 feet
The range of the Bluetooth® connection is approximately 30 feet (10 meters). However, maximum communication range will vary depending on obstacles (person, metal, wall, etc.) or electromagnetic environment. NOTE: Not all audio devices are supplied with Bluetooth capability.

Why is Bluetooth range so short?

Bluetooth uses a 2.4 GHz radiofrequency which is the same as WiFi. Bluetooth is designed to connect with devices in a short range and the data packets that change between them are slow. Bluetooth consumes a lot less power when compared to WiFi. With all these limitations, the range of Bluetooth is so short.

How can I reduce Bluetooth range?

It would be possible to build a longer range Bluetooth transmitter but you would then need much larger batteries or mains powered devices which defeats the original objective. The easiest way to further limit Bluetooth’s range is to reduce the power of the device, or put some shielding around the device.

Can Bluetooth detect proximity?

Bluetooth signals can be used to detect whether or not beacon and receiver device are in proximity of each another; however, the manner in which they operate means their proximity detection does not correspond to consistent, fixed spatial distances [12].

What affects Bluetooth range?

Ranges can be drastically reduced by obstacles between the two devices, such as walls, which attenuate the signals. Thus, the range is affected by transmitting power, receiver sensitivity and obstacles near the device.

How do I make my Bluetooth range longer?

If you have a Bluetooth amplifier, you can replace its antenna with an extender antenna and enjoy Bluetooth from a range of more than 190 feet. To enjoy a longer range, you need to have an extender that receives Bluetooth from a long range too.

How can I make my Bluetooth signal stronger?

Change the position or location of the unit or connected device. If the connected device has a cover on it, take it off to improve the communication distance. If the connected device is in a bag or in a pocket, try moving the position of the device. Place the devices closer together to improve signal transmission.

Does WIFI interfere with Bluetooth?

To communicate between your devices, Bluetooth sends signals over a 2.4GHz radio frequency. This becomes problematic when other nearby devices are also using that frequency. Wi-Fi is perhaps the biggest and most problematic example, as are other Bluetooth receivers and devices, which can interfere with one another.

How accurate is Bluetooth distance measurement?

For outdoor measurements, you can have an accuracy of less than 100 m with precision around 90\% depending on the things in your environment and the range of your Bluetooth device. Measuring distance with Bluetooth is a possible thing especially for indoor environments where GPS is invalid.

How do you measure Bluetooth signal strength?

With the received signal strength, you measure the distance of Bluetooth A from B by using the Bluetooth signal strength that A receives from B. The a is a factor to offset the maximum received signal. While this approach is simple and straight, it only works well in an outdoor environment.

How accurate is the accuracy of indoor measurements?

In short, the accuracy of measurement for an indoor environment is generally low. Usually less than a meter with precisions around 80\%-90\%. However, with some modifications and trials, you can make adjustments to improve it.

How does Bluetooth Low Energy (BLE) support localization and asset tracking?

As Bluetooth Low Energy (BLE) is widely deployed in smart tags, smart-phones, and smart-devices, adding functionality to support localization and asset tracking is crucial. In order to locate a device, either the angle or range to the device needs to be calculated.