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Chaff cloud spurious echo simulation method of missile-borne radar after tracking moving object

A moving target and radar tracking technology, applied in the field of radar, can solve the problems of not considering the movement of chaff cloud, large difference of chaff cloud interference, interference, etc., and achieve the effect of accurate synthetic center of mass coordinates, accurate center coordinates, and good interference effect

Active Publication Date: 2018-05-11
XIDIAN UNIV
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Problems solved by technology

However, the existing method does not consider the movement of the chaff cloud after launch and considers the missile tracking point to be the chaff, which will bring a large error, which is quite different from the chaff cloud interference in the actual scene, because the simulation of the interference should simulate the real situation as much as possible. situation, in order to get a good interference effect

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  • Chaff cloud spurious echo simulation method of missile-borne radar after tracking moving object
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  • Chaff cloud spurious echo simulation method of missile-borne radar after tracking moving object

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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] An embodiment of the present invention provides a chaff cloud interference echo simulation method after the missile-borne radar tracks a moving target, such as figure 1 As shown, the method includes the following steps:

[0035] Step 1. Obtain the chirp signal s(t m ); m Indicates the mth pulse repetition moment.

[0036] in, γ represents the frequency of modulation; where t m Repeat the moment for the mth pulse.

[0037] Step 2: Determine the ce...

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Abstract

The invention belongs to the technical field of radars and discloses a chaff cloud spurious echo simulation method of a missile-borne radar after a moving object is tracked. The method comprises the following steps: firstly obtaining a synthetic center-of-mass coordinate of a chaff cloud and a target; then obtaining the number of chaffs on each range gate; then obtaining the antenna gain, amplitude and frequency of a single chaff, and obtaining a jamming modulation value of the single chaff; then sequentially adding the jamming modulation values of all the chaffs on the current range gates (one range gate is added every time); obtaining a chaff cloud total modulation sequence on all the range gates; and finally convoluting an emission signal with the total modulation sequence, so that a chaff cloud center-of-mass spurious echo signal is obtained. The method disclosed by the invention has the advantages that difference between the actual tracking point of a missile and a simulation tracking point can be reduced, and accurate simulation on chaff cloud center-of-mass jamming is realized.

Description

technical field [0001] The invention belongs to the technical field of radar, and in particular relates to a chaff cloud interference echo simulation method after a missile-borne radar tracks a moving target, which is mainly applicable to the chaff cloud interference echo simulation method that the missile-borne radar has already tracked the target Chaff clouds were simulated and their performance evaluated. Background technique [0002] In recent years, the jamming of missile-borne radar moving targets has attracted extensive attention in the field of chaff cloud centroid jamming. The centroid synthesis of chaff cloud and target, calculating the amplitude of chaff cloud interference, and calculating the Doppler frequency of chaff cloud interference are the key steps of chaff cloud centroid interference. The radar transmits the signal to the chaff cloud, and the chaff cloud reflects the signal back to the radar, which is equivalent to the echo signal obtained by modulating ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/38G01S7/40
CPCG01S7/38G01S7/4052
Inventor 朱圣棋陈芸廖桂生许京伟茆健罗丹
Owner XIDIAN UNIV
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