Now almost everyone has their own mobile phone, but you know that when you use the mobile phone, your geographic information may have been provided to the communication company, which makes our life very transparent. It seems that you already know that pigeons returning home can fly long distances, but there are other animals, such as lobsters, that can complement domestic animals. Studies have shown that these marine organisms can retrieve position information from azimuth clues generated by many local anomalies in the earth’s magnetic field. After installing portable jammer in all Android and iPhone devices, a group of engineers at the University of Oulu, Finland, recently developed a new indoor positioning technology or Bluetooth beacon, which does not require Wi-Fi hotspots, but has been Used by the university team. Some kind of signal processing technology found an interesting thing: the large amount of steel in the building twisted our magnetic planets, resulting in unique models everywhere in the building. Project manager Janne Haverinen explained: “Every building, the building’s ground and corridors generate specific magnetic field interference. These interferences can be measured to easily identify this location and generate interesting maps.
But the new GPS locator on our website can easily solve this problem.” But some kind of signal processing technology used by this university team found an interesting thing: the large amount of steel in the building distorted the magnetic field of our planet, so the building Each place in the object has a unique model. Project manager Janne Haverinen explained: “Every building, the building’s ground and corridors will generate specific magnetic interference. These jammers can be measured to easily identify this location and generate interesting maps. But the new GPS locator on our website can easily solve this problem.” But some kind of signal processing technology used by this university team found an interesting thing: the large amount of steel in the building distorted the magnetic field of our planet, so the building Every place in the thing has produced a unique model.