Patent · US Active

Method and system for tracking objects using passive secondary surveillance radar

US11226410B2 · kind B2 · utility

0Cited by

14References

28Claims

0Family size

Assignee

Seamatica Aerospace Ltd. · CA

Inventors

Yake Li · Ottawa, CA
Siu Donald O'Young · St. John's, CA

Key dates

Filing date	Feb 14, 2019
Grant date	Jan 18, 2022
Priority date	—
Expiry date	Jan 7, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG01S13/781
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Method for determining a staggered pattern and interrogation mode pattern of an Secondary Surveillance Radar (SSR) is disclosed. The method enables a Passive SSR (PSSR) to work not only inside but also outside the SSR beam. When PSSR is in the wider beam of the SSR, multiple P2-pulses are detected as time-ordered sequence of P2-pulse intervals, from which a repeating sequence and further a stagger pattern is determined. The interrogation mode pattern is determined by comparing the staggered pattern with the interrogation signals. A transmit time of the P3-pulse is predicted based on the staggered pattern and the interrogation mode pattern. Corresponding system is also provided.

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