The Interferometry Phase of Insar Coherent Jamming With Arbitrary Waveform Modulation

Liu, Qingfu; Xing, Shu; Wang, Xuesong; Dong, Jian; Dai, Dahai; Li, Yongzhen

doi:10.2528/pier11111601

Cited by 20 publications

(23 citation statements)

References 28 publications

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“…Upon our earlier research presented in [26], the interferometry phase of CT with arbitrary waveform modulations has been proved to be a constant for both single-pass and repeat-pass InSAR working modes. To continue the work of [26], we mainly focus on the DEM properties of CT in this paper and try to illustrate the differences between DEMs forged by CT and that formed by natural terrain.…”

Section: Introductionmentioning

confidence: 99%

“…To continue the work of [26], we mainly focus on the DEM properties of CT in this paper and try to illustrate the differences between DEMs forged by CT and that formed by natural terrain. The rest of the paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

“…From this point of view, CT falls into the third category of SAR ECM. In fact, if the jamming can be detected by SAR, it can be canceled through a number of Electronic Counter-Counter Measures (ECCM) techniques [26], e.g., the wideband sidelobe-cancellation [27], spatial filtering [28], and adaptive beamforming [29]. Although CT has the least probability to be detected by a traditional SAR, it may still be detected by InSAR through the analysis of its DEM and may also be defeated by SAR ECCM techniques mentioned above.…”

Section: Introductionmentioning

confidence: 99%

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The "Slope" Effect of Coherent Transponder in Insar Dem

Liu¹,

Xing²,

Wang³

et al. 2012

PIER

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Abstract-Although a Coherent Transponder (CT) is widely utilized in the field of Synthetic Aperture Radar (SAR), its Digital Elevation Model (DEM) has not yet been well studied for Interferometry SAR (InSAR). Based on the fact that the interferometry phase is a constant for CT with single transmit antenna, this paper mainly focuses on InSAR DEM induced by CT. The decorrelation effect in the intersection region of CT and natural terrain is researched in detail to support the analysis of CT's phase-unwrapping. The most important property, which makes DEM of CT unique, is found to be the "slope" effect. The incline angle of "main slope" of DEM is verified to be determined only by the depression angle of InSAR baseline, whereas the incline angles of the "subordinate slopes" are affected by all the geometric parameters of InSAR baseline. Finally, all the incline angles are independent of CT's waveform modulations, since the modulations have no contribution to the interferometry phase.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The "Slope" Effect of Coherent Transponder in Insar Dem

Liu¹,

Xing²,

Wang³

et al. 2012

PIER

Self Cite

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show abstract

“…Therefore, the research of active jamming methods for countering wideband LFM radar is of great importance [3,4], which can be mainly distributed into two classes: deception jamming and suppression jamming [5]. Because these techniques are always military secrets, there are actually few published materials.…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Discretized Coherent Noise Jamming Method to Wideband LFM Radar

Gong¹,

Wei²,

Li³

et al. 2014

PIER Letters

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Abstract-For coherent jammers to wideband linear frequency modulation (LFM) radar, the ratio between jamming energy and signal energy is always constant. To enhance the jamming to signal ratio (JSR), a two-dimensional (2D) discretized coherent noise jamming (2D-DCNJ) method is first proposed in this paper, where the covering area of the noise jamming results in 2D imaging is limited to a certain shape and further discretized to centralize the jamming energy. Moreover, the idea of weighting is applied to 2D-DCNJ to control the distribution of jamming energy, which can present some particular deceptive characteristics. The relationship between jamming results and modulated noise is analyzed, based on which the procedure of generating the jamming signal is detailed, and the JSR performance is compared with the previous ones. Finally, the validity of the proposed method is demonstrated via numerical simulation.

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“…Accordingly, SAR Electronic Counter Measures (ECM) is also a hot topic nowadays. According to the relationship between SAR transmitted signal and its jamming, SAR ECM technologies can be divided into three types [7][8][9], i.e., non-coherent jamming, partially coherent jamming, and coherent jamming. Noncoherent jamming [10,11] is easiest to be designed, but needs largest transmit power and is most susceptible to the detection of SAR receiver.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Sar Jammer With Direct Radio Frequency Processing (Drfp)

Liu¹,

Dong²,

Wang³

et al. 2013

PIER

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Abstract-DRFM (Digital Radio Frequency Memory) is now widely utilized by modern radar jammers due to its high efficiency in jamming generation. However, its jammer structure is somewhat complex, since the up-conversion and down-conversion processes must be included. This paper proposes a new Synthetic Aperture Radar (SAR) jammer architecture utilizing Direct Radio Frequency Processing (DRFP), wherein both the up-conversion and down-conversion modules can be excluded. DRFP has a very compact hardware structure which employs Direct Digital Synthesizer (DDS), phase shifter, and delay lines for jamming modulation. Finally, the performances of DRFP are shown by both the inner-field test and a rail-way SAR experiment to be rather effective in jamming generation.

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The Interferometry Phase of Insar Coherent Jamming With Arbitrary Waveform Modulation

Cited by 20 publications

References 28 publications

The "Slope" Effect of Coherent Transponder in Insar Dem

The "Slope" Effect of Coherent Transponder in Insar Dem

Two-Dimensional Discretized Coherent Noise Jamming Method to Wideband LFM Radar

An Efficient Sar Jammer With Direct Radio Frequency Processing (Drfp)

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