METHODS, DEVICES, AND USES FOR CALCULATING A POSITION USING A GLOBAL NAVIGATION SATELLITE SYSTEM

摘要

The invention, in some embodiments, relates to the field of global navigation satellite systems, and more particularly to the field of methods and devices for improving accuracy of position determination by receivers of global navigation satellite systems. Some embodiments of the invention relate to methods for generating a three-dimensional (3-D) representation of an urban area by a receiver of a global navigation satellite system using blocked lines of sight to satellites of the system. Additional embodiments of the invention relate to methods for transmitting a three-dimensional (3-D) representation of an urban area by a receiver of a global navigation satellite system for improving calculation of location by the global navigation satellite system receiver.

主权项

1. A method of calculating the position of a receiver of global navigation satellite signals, the method comprising:
obtaining at least one three-dimensional (3D) representation of an area containing the receiver, and a 3D shading map associated with each of a plurality of global navigation satellites; for each of at least a portion of said satellites: classifying whether said satellite is a line-of-sight (LOS) satellite, having a line of sight to the receiver, or a non-line-of-sight (NLOS) satellite, not having a line of sight to the receiver; comparing said shading map to said classification; and narrowing said area according to said comparison.