Patent · US Expired

Correlation of flight track data with other data sources

US7248219B2 · kind B2 · utility

16Cited by
89References
6Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 22, 2005
Grant dateJul 24, 2007
Priority date—
Expiry dateAug 22, 2025

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01S5/0284
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.