Universal matched filter
AssigneeTRW Inc.
InventorsSteven L. Wood, Manuel L. Garcia
Life of this patent
Estimating the term…
Abstract
A universal matched filter integrates previously individualized communication hardware in an avionic suite into a single piece of digital hardware. Characterization of the individual processing functions required within an avionic system such that they lend themselves to common hardware processing allows the avionic suite to be designed with a minimum set of circuit elements, each which may be used for more than one communication mode.
Claims15
An avionic communication system for receiving and processing radio frequency signals, said signals being characterized as pulsed, minimum shift keying (MSK), narrowband and global positioning system (GPS) signal types, said communication system comprising:
- front end receiver means for receiving pulsed, minimum shift keying (MSK), narrowband and global positioning system (GPS) signal types;
- selection means for selecting one of said signal types received by said front end receiver means for processing;
- pulse processor means for processing said pulsed signals and inhibiting said minimum shift keying (MSK), narrowband and global positioning system (GPS), signal types received by said front end receiver means;
- minimum shift keying (MSK) processor means for processing said minimum shift keying (MSK) signals and inhibiting said pulsed, narrowband and global positioning system (GPS) signal types received by said front end receiver means;
- narrowband processor means for processing said narrowband signals and inhibiting said pulsed, minimum shift keying (MSK) and global positioning system (GPS) signal types received by said front end receiver means;
- global positioning system (GPS) processor means for processing said global positioning system (GPS) signals and inhibiting said pulsed, minimum shift keying (MSK) and narrowband signal types received by said front end receiver means;
- and
- interface means for directing said pulsed, minimum shift keying (MSK), narrowband and global positioning system (GPS) signal types received by said front end receiver means to each of said processor means for processing.
A universal matched filter for receiving and processing signals, said signals being characterized as pulsed, minimum shift keying (MSK), narrowband and global positioning system (GPS) signal types, said filter comprising:
- a wideband digital I and Q bus and a narrowband digital I and Q bus, said wideband and narrowband buses operable for receiving digital data from the pulsed, minimum shift keying (MSK), narrowband and global positioning system (GPS) signal types;
- a wideband analog to digital (A/D) interface for receiving the digital data from the wideband digital I and Q bus;
- narrowband processor means for receiving the digital data from the narrowband digital I and Q bus, said narrowband processor means processes the narrowband signals from the digital data and inhibits the pulsed, minimum shift keying (MSK) and global positional system (GPS) signal types;
- pulsed processor means for receiving the digital data from the wideband analog to digital (A/D) interface, said pulsed processor means processes the pulsed signals from the digital data and inhibits the minimum shift keying (MSK), narrowband and global positioning system (GPS) signal types;
- minimum shift keying (MSK) processor means for receiving the digital data from the wideband analog to digital (A/D) interface, said minimum shift keying (MSK) processor means processes said minimum shift keying (MSK) signals from the digital data and inhibits the pulsed, narrowband and global positioning system (GPS) signal types;
- global positioning system (GPS) processor means for receiving the digital data from the wideband analog to digital (A/D) interface, said global positioning system (GPS) processor means processes the global positioning system (GPS) signals from the digital data and inhibits the pulsed, minimum shift keying (MSK) and narrowband signal types;
- and
- controller interface means connected to each of said processor means for receiving control signals from an input controller to select one of said signal types for processing.
An avionic communication system for receiving and processing signals, said signals being characterized as pulsed, minimum shift keying (MSK), narrowband and global positioning system (GPS) signal types, said communication system comprising:
- a front end receiver operable for downconverting, demodulating and digitizing the pulsed, minimum shift keying (MSK), narrowband and global positioning system (GPS) signal types;
- input controller for selecting one of said signal types received by said front end receiver for processing;
- pulse processor for processing said pulsed signals from said front end receiver and inhibiting said minimum shift keying (MSK), narrowband and global positioning system (GPS) signal types;
- minimum shift keying (MSK) processor for processing said minimum shift keying (MSK) signals from said front end receiver and inhibiting said pulsed, narrowband and global positioning system (GPS) signal types;
- narrowband processor for processing said narrowband signals from said front end receiver and inhibiting said pulsed, minimum shift keying (MSK) and global positioning system (GPS) signal types;
- global positioning system (GPS) processor means for processing said global positioning system (GPS) signals from said front end receiver and inhibiting said pulsed, minimum shift keying (MSK) and narrowband signal types;
- wideband analog to digital (A/D)interface for directing said pulsed, minimum shift keying (MSK), narrowband and global positioning system (GPS) signal types to said pulse processor, said minimum shift keying (MSK) processor and said global positioning system (GPS) processor;
- and
- a maintenance node connected to each of said processors for interfacing and communicating with a maintenance processor to provide test capability for the avionic communication system.
Dependencies are inferred from the claim text.