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:
May. 28, 2002
Filed:
Jun. 15, 1999
Karl-Ragmar Riemschneider, Hamburg, DE;
Franz Wolf, Hamburg, DE;
C. Plath GmbH, Nautisch-Elektronische Technik, Hamburg, DE;
Abstract
A method and apparatus for altering the coordinates obtained by satellite navigation in a receiving system which fixes an incorrect position, instead of a true position, within a given three-dimensional zone. In connection with altered coordinates, additional navigational information such as course and speed can also be influenced. Specifically, signals are received from a site and re-emitted in a suitable way so that a navigation receiver determines the position of the receiving site within the three-dimensional zone covered by the emission. This approach is superior to noise-blanketing countermeasures (such as carrier or noise interference) in that precise but untrue coordinates are determined in the navigation receiver, without this incorrectness being immediately recognized. In addition, advantages over code-producing deception measures are also gained in that no knowledge of the structure of the signal being emitted from the satellite is presupposed and thus any secrecy measures or modifications of this signal structure have no effect. Such embodiments may, for example, crucially reduce the effectiveness of weapons systems navigated by satellite or serve as deceptive measures in other applications concerned with security and weapons technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile