Corner reflector interference echo simulation method after tracking moving target by missile-borne radar

A corner reflector and radar tracking technology, applied in the field of radar, can solve problems such as interference, doppler frequency of the corner reflector, etc.

Active Publication Date: 2018-09-18
XIDIAN UNIV
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Problems solved by technology

However, the existing method does not consider the Doppler frequency of the corner reflector, and regards the corner reflector as a fixed point target, which will make the pulse Doppler radar distinguish the true and false targets and make the interference invalid

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  • Corner reflector interference echo simulation method after tracking moving target by missile-borne radar
  • Corner reflector interference echo simulation method after tracking moving target by missile-borne radar
  • Corner reflector interference echo simulation method after tracking moving target by missile-borne radar

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Embodiment Construction

[0098] 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.

[0099] refer to figure 1 A method for simulating the interference echo of a corner reflector after a missile-borne radar tracks a moving target provided in an embodiment of the present invention includes the following steps:

[0100] Step 1, the launch signal of the missile-borne radar is a chirp signal s(t m ).

[0101]

[0102] Among them, γ is the modulation frequency of the missile-borne radar; where t m For the mth (m∈[1, N a ], N a is the total n...

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Abstract

The invention belongs to the technical field of radars, and discloses a corner reflector interference echo simulation method after tracking a moving target by a missile-borne radar. The corner reflector interference echo simulation method comprises the steps of: firstly, calculating a radar scattering cross-sectional area of a corner reflector; secondly, calculating a Doppler frequency of a cornerreflector interference modulation sequence according to a radius and a rotating speed of the rotating corner reflector; thirdly, solving the corner reflector interference modulation sequence according to amplitude and delay of the corner reflector interference modulation sequence; and finally, carrying out convolution on a transmission signal and the modulation sequence to obtain a corner reflector interference echo signal. Therefore, the Doppler frequency brought by the rotation of the corner reflector is obtained, and the passive interferent corner reflector can be detected as a target witha velocity.

Description

technical field [0001] The invention belongs to the technical field of radar, and in particular relates to a method for simulating the interference echo of a corner reflector after a missile-borne radar tracks a moving target. Corner reflectors 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 corner reflector jamming. Calculating the Doppler frequency of the rotating corner reflector, calculating the radar cross-sectional area of ​​the corner reflector interference and calculating the magnitude of the corner reflector interference are the key steps in the simulation of the corner reflector interference. The radar transmits the signal to the corner reflector, and the corner reflector reflects the signal back to the radar, which is equivalent to the echo signal obtained by modulating the radar transmitted signal. Therefore, the simu...

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Application Information

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