Method for countering deception false target by utilizing netted radar system

Abstract

The invention discloses a method for countering a deception false target by utilizing a netted radar system, which mainly solves the problem that deception probability is high in the event of countering the deception false target only by utilizing target position information fusion. The method comprises the following steps of: (1), carrying out coordinate transformation on measurements of node radars, namely, taking various node radars as a polar coordinate system of a reference original point, and transforming to a uniform rectangular coordinate system of the netted radar system; (2), matching measurements through a nearest neighbour association method so as to obtain an association measurement sequence; (3), identifying true and false targets by utilizing target position information, and reserving the association measurement sequence passing fusion testing; (4), obtaining a practical speed vector set corresponding to the reserved association measurement sequence; and (5), carrying out identification of true and false targets by utilizing target speed information, and further reducing the deception probability of netted radar. The method disclosed by the invention effectively reduces the deception probability of the netted radar and can be used for the netted radar to effectively resist deception interference.

Description

technical field [0001] The invention relates to the field of radar technology, in particular to a networked radar data fusion processing technology, in particular to a method for identifying and countering deceptive false targets in a networked radar system. This method can be used in the networked radar system data fusion center to effectively identify and eliminate deceptive false targets, and realize the networked radar system against deceptive jamming. Background technique [0002] Deceptive jamming means that the jammer intercepts the radar transmission signal and analyzes its parameters, and transmits a modulated and delayed transmission signal to the radar, thereby generating many false targets around the real target, so that the radar cannot correctly identify the real target . Deceptive jamming includes distance deception, angle deception, and speed deception, that is, Doppler frequency deception. [0003] Distance deception means that the distance of the false ta...

AI Technical Summary

Problems solved by technology

Outside the range of the radar baseline and at positions far away from the radar, since the angle between the target and the radar connection line of each node becomes smaller, the concentration and dispersion of the true and false target spatial positions become difficult to judge

Therefore, only based on the position information to identify true and false targets, the probability of being deceived by the networked radar will increase while ensuring that the probability of missing alarms is small

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