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:
Jan. 30, 2007
Filed:
May. 22, 2003
Per-ludvig Börje Nordmark, Stockholm, SE;
Jonas Paul Thor, Luleå, SE;
Per-Ludvig Börje Nordmark, Stockholm, SE;
Jonas Paul Thor, Luleå, SE;
NordNav Technologies AB, Luleå, SE;
Abstract
The apparatus generates at least one high-accuracy navigation parameter (P, V, A) by means of a relative sensor system and a radio receiver system. The relative sensor system registers relative movements of the apparatus and produces at least one relative data signal (Δv, Δθ). The radio receiver system receives navigation data signals (RF) from a plurality of external signal sources and produces at least one tracking data signal (I, Q). The radio receiver system includes a central processing unit realized in a software module. A common clock unit produces a first clock signal to form a sampling basis in the radio receiver system and a second clock signal to form a sampling basis in the relative sensor system, where the clock signals are mutually synchronous. Data return loops may be closed in the common software module both with respect to the radio receiver system and the relative sensor system to achieve ultra-tight coupling of the two systems.