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
Electric vehicle charging station parking meter systems
Control apparatus for autonomous operating vehicle
Ion generation using wetted porous material
Transmitting a synchronizing signal in a packet network
Quantum dot template for fast and simultaneous detection of different infectious agents
Automated pizza preparation and vending system
Methods and apparatus for preserving privacy in an RFID system
  Randomly Featured Patents
Electronic light control visor with two mutually perpendicular unidimensional photodetector arrays
Cationic aqueous emulsion systems
Current measuring shunt with circuitry mounted thereon
Stabilized compositions and methods for radiolabeling pharmaceuticals with alpha-particle emitters
Method for geo-registration of imported bit-mapped spatial data
Lens assembly and method for forming the same
Stealth interface for process control computers
Trusted monitoring system and method
Quadrature modulation apparatus, method, program, and recording medium
Control system for exhaust gas recirculating valve