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
Image processing apparatus, image forming system, and image forming method with geometric processing
Voltage regulator soft-start circuit providing reference voltage ramp-up
Process of separating gases using polyimide membranes
System and method for modulation scheme changes
Medical injector
Open framework system for heterogeneous computing and service integration
  Randomly Featured Patents
Platelet function inhibiting monoclonal antibody fragment
Endline drip head for use in watering systems
ESD-protection device with active R-C coupling to gate of large output transistor
Electronic package with integral electromagnetic radiation shield and methods related thereto
Hydrogen storage system and power system incorporating same
Apparatus, method, and program for face feature point detection
Power controller for heat tracing cable which responds to ambient temperature
Methods for isolation, use and analysis of ferritin
Processor for digital data
Simulator for multiple network interface units