Correlation of flight track data with other data sources
AssigneeERA Systems Corporation
InventorsAlexander E. Smith, Bennett Cohen
Life of this patent
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Abstract
A method of triangulating aircraft transponder signals using a number of receivers connected to a central station over communication links includes applying at least one logic rule at each receiver to incoming transponder signals to filter redundant transponder signals, time-stamping filtered transponder signals, and transmitting time-stamped transponder signals to the central station. Logic rules include at least one of altitude filtering, Mode S, Mode A/C code filtering, and change filtering. Replies are accepted when a change in state is indicated, such that the only those replies indicating a change in state are time-stamped and sent to the central server.
Claims6
A method of triangulating aircraft transponder signals using a number of radio receivers connected to a central station over communication links, said method comprising the steps of:
- applying at least one logic rule at each radio receiver to incoming aircraft transponder signals to filter redundant transponder signals,
- time-stamping filtered transponder signals, and
- transmitting time-stamped transponder signals to the central station.
A system for triangulating aircraft transponder signals comprising:
- a central station for receiving time-stamped signals from a plurality of radio receivers;
- a plurality of radio receivers connected to the central station over communication links, each of said radio receivers comprising:
- means for applying at least one logic rule at each receiver to incoming aircraft
- transponder signals to filter redundant aircraft transponder signals,
- means for time-stamping filtered aircraft transponder signals, and
- means for transmitting time-stamped aircraft transponder signals to the central station.
Dependencies are inferred from the claim text.