AoA навигация | Indoors Navigation

AoA navigation

Accurate indoor positioning by determining the position of an object based on the angle of the received bluetooth signal to the locator — Angle of Arrival (AoA). Navigation accuracy is up to 1 meter.

Indoors Navigation locators use proprietary algorithms for angular estimation and signal processing for indoor positioning. As a result, high accuracy of navigation and tracking of movements on the object is achieved.

Technologically, the AoA solution uses Bluetooth 5.1 protocol and is not yet supported by many mobile devices, so special tags and beacons of this standard are used.

Using AoA positioning allows you to save on the maintenance of BLE sensors (battery replacement) and increase the accuracy of navigation in buildings.

However, the installation and configuration of AoA locators is more difficult and more expensive than BLE balls, as it requires the connection of an Ethernet (POE) cable and is installed on the ceiling of the room.

UWB

Application of AoA technology for indoor positioning

Navigation

Using AoA technology, it is possible to accurately determine the location of a person with an application installed on a mobile phone that supports Bluetooth 5.1, show a point on the map and guide the route in real time.

Tracking movements

AoA technology helps to accurately track personnel, tangible assets, and goods in your building or premises where other technologies are not accurate enough: BLE 4.0-5.0, Wi-Fi, GPS, or their use is limited.

Analytics

Using solutions based on the BLE 5.1 protocol and Angle of Arrival technology, it is possible to collect fairly accurate "live" statistics and indicators about the behavior of visitors indoors, and visual heat maps will demonstrate the distribution throughout the building.

AoA positioning technology

The method of operation of AoA positioning solutions for indoor navigation is based on the principle of measuring the angular directions of the radio signal (azimuth and altitude) with a locator installed in a specific location of the building. The angle at which the signal meets the receiver in the locator is measured by calculating the phase of the received radio signals.

The use of BLE tracking using AoA technology is suitable for almost any area and provides relatively high positioning accuracy from 0.5 to 1 meter.

Accurate asset tracking is used in various fields, such as manufacturing, logistics, and healthcare, where locating production equipment, instruments, or medical devices is an important part of the effective functioning of a business. The AoA solution also allows you to identify nearby objects.

How does UWB positioning work?

Deployment

Deploying a solution based on Angle of Arrival technology takes more time and effort than the already familiar solutions based on positional BLE sensors (beacons).

Map development

The editor of the Indoor Navigation Platform develops a map of your object on which you need to organize navigation.

Installing locators

In the room, Aaa INAR locators are installed on the ceiling (in accordance with technical requirements) and connected to the IN-AoA-G UTP gateway via an Ethernet cable. The gateway must be connected to the Internet.

Up to 4 locators can be connected to one gateway.

Each of them has 12 antennas covering an area with a radius of 15-20 meters. The coverage range of one set of equipment from the gateway and 4 AOA locators is about 1000 m2.².

Device position detection

Using AoA technology, it is possible to determine the position of mobile devices that support Bluetooth 5.1 and BLE 5.1 beacon tags, which are issued to personnel or attached to equipment that needs to be monitored at the facility. The form factors of beacons and tags are different: bracelets, smart watches, badges, key rings, mini sensors. Depending on the task, suitable AoA tags are selected.

Calculating coordinates

Based on the algorithms we have developed, the server calculates the coordinates from each placemark and displays the location on the map.

Signal processing

IN-AR locators receive signals from beacons and send them to the IN-AoA-G gateway, which processes the received data and transmits it to the server.

Thematic publications on our blog

Indors Navigation Integration Experiment AoA positioning

Over the course of several months, our staff has developed a special algorithm for determining the position in the room based on the angle of arrival of the radio signal — Angle of Arrival (AoA). In one of the rooms of the building, we installed 4 IN-AR locators, which were connected to one IN-AoA gateway.…

High-precision positioning based on the angle of arrival of the signal. Angle of Arrival (AoA)

In 2021, Indors Navigation integrated a module into the GIS system of the Interiors Navigation Platform that supports the technology for determining the position of an object in a room by the angle of arrival of a Bluetooth signal — Angle of Arrival (AoA).

AoA Positioning Equipment