Method and device to detect the garbling of pulses received by a secondary radar by phase analysis
AssigneeThomson-CSF
InventorsPhilippe Billaud, Claude de Volder
Life of this patent
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Abstract
Disclosed are a method and a device to detect the intermingling, hence the garbling, of pulses received by a secondary radar by phase analysis. The monopulse reception antenna of a secondary radar delivering a sum signal given by its sum channel and a difference signal given by its difference channel, the method according to the invention consists in analyzing the phase difference between the sum signal and the difference signal, the garbling of at least two received pulses being detected by a phase difference with a value that is substantially different from 0.degree. or 180.degree.. Application to the detection of garbled pulses received when the working frequencies of the transponders are very close to one another.
Claims9
A method to detect the garbling of pulses received by a secondary radar with monopulse reception antenna delivering a sum signal given by its sum channel and a difference signal given by its difference channel, wherein said method consists in analyzing the phase difference between the sum signal and the difference signal, the garbling of at least two received pulses being detected by means of a phase difference, the value of which is substantially different from 0.degree. or 180.degree..
Dependencies are inferred from the claim text.