Accurate smartphone positioning in dense urban environments remains challenging due to signal blockage, multipath effects, and unreliable satellite visibility. This study presents a new positioning ...

Global Navigation Satellite System (GNSS) positioning techniques have evolved significantly over recent decades, spanning from traditional single-frequency methods to advanced multi-constellation and ...

What if GPS had existed in 1565? No satellites or microelectronics, sure—but let’s play along. Imagine the bustling streets of Antwerp, where merchants navigated the sprawling city with woodcut maps.

National Car Rental and Alamo Rent A Car, the two car rental companies operated by Tulsa-based Vanguard Car Rental USA Inc., are installing global positioning system navigation units in their rental ...