公开(公告)号：US20240421474A1

公开(公告)日：2024-12-19

申请号：US18336363

申请日：2023-06-16

Applicant: Google LLC

Inventor： Frank Stephen Tromp van Diggelen ,  Mohammed Khider

IPC: H01Q3/04 ,  H01Q1/24

Abstract: Example embodiments relate to centimeter-accurate localization using asymmetric antennas. A pair of mobile devices can establish a wireless communication connection with one device acting as a base station and the other being a rover for real-time kinematic (RTK) positioning. When the mobile devices have similar asymmetric antennas for Global Navigation Satellite System (GNSS) signal reception, errors caused by the asymmetric antennas can be canceled by combining measurements from both devices. The rover mobile device may display instructions for the user to adjust its orientation to align with the orientation of the base station mobile device. The rover mobile device can then obtain and use measurement or correction data from the base station to determine its position relative to the rover mobile device. Such techniques can be performed by complementary model devices to be used to map areas to a high degree of precision (e.g., centimeter level), including elevation.