Analysis of the Effect of Interference on InSAR

Xu, Huibin; Wu, Zhefeng; Liu, Wei; Li, Jingwen; Feng, Qingqing

doi:10.1109/jsen.2015.2445931

Cited by 17 publications

(13 citation statements)

References 18 publications

(19 reference statements)

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“…So a DM of 804 pc cm −3 can give a redshift, z ≈ 0.67 The observed contribution of DM from Milky Way is less than 100 pc cm −3 for Galactic latitudes greater than 10 degree (Yang & Zhang 2016). The total observed DM is the sum of the contribution from the host galaxy intergalactic medium and that of the Milky Way (Xu & Han 2015). After removing the contribution from the Milky Way a DM of 700 pc cm −3 gives redshift, z ≈ 0.58.…”

Section: Burst Locationmentioning

confidence: 96%

Detection of a Low-frequency Cosmic Radio Transient Using Two LWA Stations

Varghese

Obenberger

Dowell

et al. 2019

ApJ

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We report the detection of a potential cosmic radio transient source using the two stations of the Long Wavelength Array. The transient was detected on 18 October 2017 08:47 UTC near the celestial equator while reducing 10,240 hours of archival all-sky images from the LWA1 and LWA-SV stations. The detected transient at 34 MHz has a duration of 15 -20 seconds and a flux density of 842 ± 116 Jy at LWA1 and 830 ± 92 Jy at LWA-SV. The transient source has not repeated, and its nature is not well understood. The Pan-STARRS optical telescope has detected a supernova that occurred on the edge of the position error circle of the transient on the same day.

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Section: Burst Locationmentioning

confidence: 96%

Detection of a Low-frequency Cosmic Radio Transient Using Two LWA Stations

Varghese

Obenberger

Dowell

et al. 2019

ApJ

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“…Intuitively, strong interference would generate haze-like image artifacts or bright lines superimposed on the illuminated area, which lead to inaccurate spatial and radiometric measurements. What is worse, the resulting phase distortion would de-correlate the data, producing inaccurate post-products such as polarimetric descriptor [5], coherence [9], and retrieved biological or physical parameters [10]. Consequently, the RFI hinders the subsequent image interpretation process like target detection, classification, etc.…”

Section: Image Interpretation Processmentioning

confidence: 99%

Mitigation of Radio Frequency Interference in Synthetic Aperture Radar Data: Current Status and Future Trends

et al. 2019

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Radio frequency interference (RFI) is a major issue in accurate remote sensing by a synthetic aperture radar (SAR) system, which poses a great hindrance to raw data collection, image formation, and subsequent interpretation process. This paper provides a comprehensive study of the RFI mitigation techniques applicable for an SAR system. From the view of spectrum allocation, possible terrestrial and spaceborne RFI sources to SAR system and their geometry are analyzed. Typical signal models for various RFI types are provided, together with many illustrative examples from real measured data. Then, advanced signal processing techniques for removing RFI are reviewed. Advantages and drawbacks of each approach are discussed in terms of their applicability. Discussion on the future trends are provided from the perspective of cognitive, integrated, and adaptive. This review serves as a reference for future work on the implementation of the most suitable RFI mitigation scheme for an air-borne or space-borne SAR system.

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“…However, the existing many traditional SAR interfering techniques such as noisy barrage jamming, shift-frequency jamming, intermittent sampling repeater jamming and scattered-wave jamming are hardly used to jam InSAR [10][11][12][13][14]. That is because the phase of the imaging output from the jamming signals is a constant related to the transponder's position, causing the jamming signals easy to be eliminated [15][16][17]. Therefore, many researchers proposed new InSAR interfering techniques.…”

Section: Introductionmentioning

confidence: 99%

A New Three-Dimension Deceptive Scene Generation against Single-Pass Multibaseline InSAR Based on Multiple Transponders

Dai

Xing

et al. 2020

Sensors

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The interferometry synthetic aperture radar (InSAR) deceptive jamming method utilizing two synergetic transponders can generate a false three-dimension (3D) scene in a single baseline InSAR image. However, such deceptive capability could be reduced by the multibaseline InSAR system. To obtain effective deception on multibaseline InSAR, a novel deceptive scene generation method jointly employing multiple transponders is proposed. It only demands that each transponder is modulated with a complex coefficient when generating a false point. The complex modulation coefficient can be offline calculated according to the deceptive point coordinate by solving a matrix. Besides, the complex modulation coefficient can be combined with the deceptive scene template, and thus a large 3D deceptive scene is able to be created quickly in the multibaseline InSAR image by using the fast two-dimension (2D) SAR deceptive scene generation algorithm. As long as the number of transponders is not less than the number of antennas of the multibaseline InSAR system, this proposed method is effective. The effectiveness of the proposed method is validated by computer simulations.

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Analysis of the Effect of Interference on InSAR

Cited by 17 publications

References 18 publications

Detection of a Low-frequency Cosmic Radio Transient Using Two LWA Stations

Detection of a Low-frequency Cosmic Radio Transient Using Two LWA Stations

Mitigation of Radio Frequency Interference in Synthetic Aperture Radar Data: Current Status and Future Trends

A New Three-Dimension Deceptive Scene Generation against Single-Pass Multibaseline InSAR Based on Multiple Transponders

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