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:
Mar. 24, 2009
Filed:
Mar. 24, 2006
Charles E. Mcdowell, Marion, IA (US);
Charles E. McDowell, Marion, IA (US);
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Abstract
An anti-jam system for use with a normal L1 Only Global Positioning System (GPS) receiver. The anti-jam system includes a switchable L1/L2 RF downconverter for receiving L1 and L2 RF signals from an RF signal source and converting a selected one of the L1 or L2 RF signals to a low frequency analog signal. An analog-to-digital converter (ADC) converts the low frequency analog signal to a digital signal. A digital anti-jam processor processes the digital signal to enhance anti-jam performance. A digital-to-analog converter (DAC) converts the processed digital signal to an enhanced analog signal. An RF upconverter converts the enhanced analog signal to an L1-based RF signal for use by a normal L1 Only GPS receiver.