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Double-navigation InSAR three-dimensional deception jamming method

A deceptive interference, three-dimensional technology, applied in the direction of radio wave reflection/re-radiation, using re-radiation, measuring devices, etc., can solve the problem of no three-dimensional deception interference, and achieve the effect of fast three-dimensional deception

Active Publication Date: 2014-10-01
BEIHANG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] At present, InSAR and InSAR electronic countermeasures are one of the hot research issues in recent years. However, electronic countermeasures against InSAR mainly focus on suppressing jamming, and there is no related research on 3D deception jamming.

Method used

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  • Double-navigation InSAR three-dimensional deception jamming method
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  • Double-navigation InSAR three-dimensional deception jamming method

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Embodiment

[0079] A dual-air InSAR three-dimensional deception jamming method of the present invention, the specific embodiment is:

[0080] Step 1: Obtain the influence of SAR spoofing jamming on dual-airline interference, and obtain the interference phase model of SAR spoofing jamming. The processing mainly includes jamming scene setting, generation and imaging processing of SAR deception jamming, and interference result of deception jamming in InSAR main and auxiliary images. Specifically:

[0081] 1. Interference scene setting

[0082] (1) According to figure 2 The relative positions of China Shuanghang InSAR system, the jammer and the protected target are set up to simulate the scene. It is assumed that the dual-airline InSAR system transmits the chirp signal, and the jammer forwards the transmitted signal of the InSAR system. The specific simulation parameters are shown in Table 1.

[0083] Table 1 InSAR system simulation parameters

[0084] parameters

value

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Abstract

The invention discloses a double-navigation InSAR three-dimensional deception jamming method. The method includes the following steps that (1), a jamming phase model generated by SAR deception jamming in the double-navigation jamming process is obtained; (2), phase jamming generated by SAR deception is offset, and a three-dimensional deception phase is designed according to a false elevation; (3), signals emitted by a jammer and provided with a predesigned false phase are generated; (4), the emitted signals are decomposed of a time-dependent part and a time-independent part according to taylor formula development; (5), the emitted signals are designed in a convolution mode to achieve rapid three-dimensional deception. The double-navigation InSAR three-dimensional deception jamming method can achieve effective deception of SAR images and effective deception of jamming phase and elevation information.

Description

technical field [0001] The invention relates to the technical field of radar electronic countermeasures, in particular to a fast three-dimensional deception jamming method for dual-airline interferometric synthetic aperture radar (InSAR for short). Background technique [0002] InSAR technology mainly uses two or more SARs to obtain echo signals in the same area, and after imaging, the phase difference between different signals is obtained through interference processing, and the quantitative relationship between the phase difference and elevation information is used to estimate the terrain elevation of the scene information. Therefore, InSAR not only maintains the imaging characteristics of SAR, but also generates new characteristics according to its coherent characteristics. Dual-air InSAR refers to the process in which the radar obtains echo signals twice by repeatedly scanning the same area. [0003] At present, InSAR and InSAR electronic countermeasures are one of the...

Claims

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Application Information

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IPC IPC(8): G01S7/38G01S13/90
CPCG01S7/38G01S13/9023G01S7/36
Inventor 徐华平武哲峰李景文
Owner BEIHANG UNIV
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