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2. GPS tracking unit - Wikipedia

   en.wikipedia.org/wiki/GPS_tracking_unit

   GPS antenna size limits tracker size, often smaller than a half-dollar (diameter 30.61 mm). In 2020 tracking is a $2 billion business plus military-in the gulf war 10% or more targets used trackers. Virtually every cellphone tracks its movements. Tracks can be map displayed in real time, using GPS tracking software and devices with GPS ...

3. I tried Walmart's $15 AirTag alternative, the Onn Item ... - AOL

   www.aol.com/lifestyle/onn-item-tracker-review...

   An item tracker can help. These little gizmos typically ride shotgun on a keychain, though you could also toss one in a purse, strap it to a backpack, tuck it in a suitcase and so on.

4. Real-time locating system - Wikipedia

   en.wikipedia.org/wiki/Real-time_locating_system

   Current location-tracking technologies can be used to pinpoint users of mobile devices in several ways. First, service providers have access to network-based and handset-based technologies that can locate a phone for emergency purposes.

5. Vehicle tracking system - Wikipedia

   en.wikipedia.org/wiki/Vehicle_tracking_system

   GPS tracking server: The tracking server has three responsibilities: receiving data from the GPS tracking unit, securely storing it, and serving this information on demand to the user. User interface: The UI determines how one will be able to access information, view vehicle data, and elicit important details from it.

6. Blue force tracking - Wikipedia

   en.wikipedia.org/wiki/Blue_force_tracking

   Blue force tracking (BFT) systems consist of a computer, used to display location information, a satellite terminal and satellite antenna, used to transmit location and other military data, a Global Positioning System receiver (to determine its own position), command-and-control software (to send and receive orders, and many other battlefield support functions), and mapping software, usually ...

7. Global Positioning System - Wikipedia

   en.wikipedia.org/wiki/Global_Positioning_System

   GPS receiver manufacturers design GPS receivers to use spectrum beyond the GPS-allocated band. In some cases, GPS receivers are designed to use up to 400 MHz of spectrum in either direction of the L1 frequency of 1575.42 MHz, because mobile satellite services in those regions are broadcasting from space to ground, and at power levels ...