Technology

Technology October 20, 2015
  • Radiofrequency Indoor Positioning Infrastructure
    Air-Go is a wireless fingerprint Indoor Positioning based technology that relies on Wi-Fi and BLE (Bluetooth Low Energy) beacons infrastructure. Bluetooth Low Energy beacons broadcasts advertising packets at 2.4GHz band’s channels. The WiFi beacon frame, provides the "heartbeat" of a wireless LAN -at 2.4 or 5Ghz band-, enabling additionally smartphones to establish and maintain communications. This advertising packets are sniffed and its received strength signal (RSSI) measured in order to estimate the position.
  • Air-Go RTLE SDK
    Air-Go RTLE SDK will enable IOS and Android apps to develop indoor maps that will assist and guide visitors inside public and private indoor buildings.  Air-Go Real Time Location Engine running in every Smartphone can scale without limit due to the crowdsourced architecture. The smart devices measures each  WiFI or BLE beacon’s RSSI (Received Signal Strength Indication) from the positioning  infrastructure. The RSSI compared against the Positioning Database enable to estimate the actual position.
  • Global Positioning System
    Air-Go RTLE enables smooth transitions between indoor and outdoor zones with support to the Global Positioning System integration.
  • Inertial Navigation Systems
    Air-Go integrates Inertial Navigation Systems, magnetometer, motion sensors (accelerometers) and rotation sensors (gyroscopes) to continuously calculate the position, orientation, and velocity.
  • Sequential Importance Sampling Particle Filter
    Particle filtering has become an established technique for solving state space models.   They work online to approximate the marginal distribution of the latent process as observations become available.  Importance sampling is used at each time point to approximate the distribution with a set of discrete values, known as particles, each with a corresponding weight.
  • Fingerprinting
    The position estimation method based on fingerprint of the assumption that any position has a unique signature Powers represented RSSI by a vector. This vector is affected by Gaussian noise. Creating a database positioning data and executing filters for estimating state Kalmann as filter and particulate filters, can eliminate the noise and estimate future positions based on predictions and actual measurements.
  • Air-Go Tags
    In those projects where the smartphone is not an option Air-Go Tags (wifi and BLE) are designed and integrated to be stuck in assets. The Tags don’t have the smart ability to estimate the position so they need the Air-Go Positioning Server to receive RSSI measures, filter and calculate the position.
  • Map Matching
    Map matching is a technique in GIS that associates real time positions to the predifined lane network on a digital map. The main purposes are to track assets, analyze traffic flow and finding the start point of the guiding directions.
  • Research and future developments
    Air-Go uses a wide range of technologies and is constantly developing the fusion of different Indoor Positioning technologies: Visible Light Communication (VLC), Bluetooth Low Energy (BLE) and inertial device sensors to transform LED lights into unique indoor location waypoints. Air-Go will make LEDs send ID information to any smartphone and tablet with a camera and/or Bluetooth Smart technology.