Personal locator services emerge.

Personal locator services emerge.

Finding a mentally impaired relative, a lost child, or a criminal in a sprawling metropolitan area would be simple if the person were equipped with a personal locator device. The belief that it should be easy to find anyone, anywhere, at any time with a few pushes of a button has caught on with the...

Ausführliche Beschreibung

Bibliographische Detailangaben
Veröffentlicht in:IEEE spectrum 37, 2 (2000).
1. Verfasser: Koshima, H.
Format: Artikel
Sprache:English
Schlagworte:
GPS.
Global Positioning System.
Enhanced signal strength.
Location fingerprinting.
Metropolitan area.
Missing persons location.
Personal locator device.
Personal locator services.
Server-assisted GPS.
Signal direction.
Signal times of arrival.