Resources Contact Us Home
Device and method for detecting, measuring, and reporting low-level interference at a receiver

Image Number 2 for United States Patent #6639541.

An inexpensive, reliable apparatus and method for autonomously monitoring, measuring the incident level, recording, comparing, reporting, and optionally displaying an indication of intentional or unintentional low-power interfering signals or emissions, including naturally occurring emissions and reflections, as received at the input of an operating system. A particular application of this invention is to monitor, measure, record, compare, report and optionally display an indication of low level interference in the L1 and L2 bands of operation of the NAVSTAR Global Positioning System (GPS). The received signals in L1 and L2 bands are compared to a reference received signal in a third band. This comparison provides a sensitive means to detect the presence of an interfering emission or signal in the L1 band or the L2 band via canceling out the variation in the radiometric scene temperature. The reported data are used for dynamic decision making.

  Recently Added Patents
Inhibition of HRP-3 using modified oligonucleotides
Plants and seeds of corn variety CV577261
Method and apparatus for communications
Method of manufacturing semiconductor device and semiconductor device
Efficient paging in a wireless communication system
LO generation with deskewed input oscillator signal
Bioelectric battery for implantable device applications
  Randomly Featured Patents
Information dependent data transmission for pilot protective relays
Substituted azetidinone compounds useful as hypocholesterolemic agents
Valve manifold
Traffic density analysis apparatus based on encoded video
Semiconductor device
Open-cell glass crystalline porous material
Fixation device and method
Method of producing silver halide photographic emulsion
Web former
Extensible software tool for investigating peer-to-peer usage on a target device