The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 15, 2020
Filed:
Feb. 16, 2017
Verkotan Oy, Oulu, FI;
Jani Kallankari, Oulu, FI;
Pekka Jokitalo, Oulu, FI;
Kari Komonen, Oulu, FI;
Pertti Mäkikyrö, Oulu, FI;
Verkotan Oy, Oulu, FI;
Abstract
The present invention discloses a test method and arrangement for testing GNSS signals within a test chamber. The test chamber inner walls are supplied with transmitting antennas supplying simulated satellite signals, originating from a signal generator. Dynamic satellite movements are simulated by interpolating several transmitted signals in order to create a single true satellite transmission signal. All visible satellites are taken into account in order to create simulated GPS signals across the whole virtual sky. Phantom objects may be used near the device under test and the phantom object may be moved or rotated in preset patterns within the test chamber. Radio channel information can be modelled according to several different real-life environments, and also reflections from any surfaces and different multipath options are taken into account in the modeling, and also in the transmission antenna angles towards the device under test. Main application areas of the invention comprise sports watches, health related or any other monitoring devices, or any devices benefiting from the positioning information, also relating to animal applications. The device may be carried or worn by the human user or any other living creature, as a wearable positioning device.