Abstract: Methods and apparatus for generating a test signal for a PNT configuration, and for testing a PNT configuration are disclosed. One such method comprises the steps of using one or more GNSS jamming signal detectors (100) to detect at least three different types of threat signal, each being an RF-based man-made GNSS jamming signal, and recording, to a database, information for the threat signals; receiving, from the database, information for at least one of the threat signals; generating a corresponding threat signal from the received information; and combining the corresponding threat signal with a PNT signal via a signal combiner to generate the test signal.
Type:
Grant
Filed:
June 24, 2016
Date of Patent:
October 19, 2021
Assignee:
NOTTINGHAM SCIENTIFIC LIMITED
Inventors:
Timothy Christopher Whitworth, Yeqiu Ying, Mark Dumville, John Pottle, Guy Buesnel
Abstract: Methods and apparatus for detecting, geo-locating and/or classifying a GPS or GNSS jamming signal are disclosed. One such method comprises the steps of analysing a spectrogram of the jamming signal using a tree-based decision process and as a result, then selecting one of a number of types of jamming signal, wherein one of the decisions (1103) in the tree is whether the spectrogram has spectral periodicity.
Type:
Grant
Filed:
September 16, 2015
Date of Patent:
January 28, 2020
Assignee:
Nottingham Scientific Limited
Inventors:
Yeqiu Ying, Timothy Christopher Whitworth, Kevin Sheridan
Abstract: Methods and apparatus for detecting, geo-locating and/or classifying a GPS or GNSS jamming signal are disclosed. One such method comprises the steps of analysing a spectrogram of the jamming signal using a tree-based decision process and as a result, then selecting one of a number of types of jamming signal, wherein one of the decisions (1103) in the tree is whether the spectrogram has spectral periodicity.
Type:
Application
Filed:
September 16, 2015
Publication date:
September 14, 2017
Applicant:
Nottingham Scientific Limited
Inventors:
Yeqiu YING, Timothy Christopher WHITWORTH, Kevin SHERIDAN