Experimental passive SAR imaging exploiting LTE, DVB, and DAB signals

Evers, Aaron; Jackson, Julie Ann

doi:10.1109/radar.2014.6875677

Cited by 23 publications

(14 citation statements)

References 10 publications

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“…Recent investigation of WiMAX and LTE signals [33][34][35] indicates it may be possible to form SAR images without collecting a direct-path reference signal. Modern digital transmission standards include synchronisation symbols, pilot carriers, and other signal features that may be known to the receiver.…”

Section: Simulation and Resultsmentioning

confidence: 99%

“…Modern digital transmission standards include synchronisation symbols, pilot carriers, and other signal features that may be known to the receiver. Instead of using the direct‐path signal for matched filtering, a partially matched filter may be built from the a priori known signal features [35]. Such processing eliminates receiver saturation from the direct path and frees up a receive channel for additional data collection.…”

Section: Simulation and Resultsmentioning

confidence: 99%

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Emitter selection criteria for passive multistatic synthetic aperture radar imaging

Stevens

Jackson²

2014

IET Radar, Sonar & Navigation

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Passive radar provides a means of spectrum sharing in a congested environment. In passive radar, the radar design problem is one of emitter selection, rather than waveform optimisation. This study combines relevant criteria (signal-to-noise ratio, ambiguity function integrated sidelobes, effective multistatic resolution area and contrast ratio) in a multiobjective optimisation to select subsets of available emitters for passive multistatic synthetic aperture radar (SAR). Extensions to wellknown monostatic and bistatic performance criteria are defined for the multistatic SAR case. Assumed limitations in the number of available receiver channels constrain the emitter selection. The proposed emitter selection framework is demonstrated for a simulated scenario of 24 analogue and digital emitters, with a constraint of four receiver channels. Results indicate that the proposed ranking successfully differentiates between emitter sets resulting in good images and those sets resulting in poor images, providing a first step towards formulating a general image quality equation for multistatic SAR.

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Section: Simulation and Resultsmentioning

confidence: 99%

Section: Simulation and Resultsmentioning

confidence: 99%

Emitter selection criteria for passive multistatic synthetic aperture radar imaging

Stevens

Jackson²

2014

IET Radar, Sonar & Navigation

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“…What is more, the receiver of the bistatic/multistatic radar system can also work by exploiting the readily available broadcast or communication transmissions as the radar source, which is called as Passive Bistatic Radar (PBR). The available transmissions include Frequency Modulation (FM) [23], [24], Digital Video Broadcasting-Terrestrial (DVB-T) [25], [26], Long Term Evolution (LTE) [27], [28], Global Navigation Satellite System (GNSS) [29], [30] and so on. Besides, bistatic/multistatic radar system can work continuously which will surely increase the integration time.…”

Section: Introductionmentioning

confidence: 99%

Long-Time Coherent Integration for Frequency Hopping Pulse Signal via Phase Compensation

et al. 2020

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Long time coherent integration technique is one of the most important methods to improve the radar detection ability of a weak maneuvering target. However, the integration performance may be greatly influenced by the range migration and Doppler migration effects caused by the complex motions of maneuvering targets when long time integration is applied. Besides, the frequency hopping characteristic of the transmitted signal will also result in Doppler migration which cannot be eliminated by the conventional coherent integration method. To deal with this problem, a novel coherent integration method based on phase compensation is proposed. By using the frequency hopping pattern, the Doppler migration is eliminated by adding an extra phase in the twiddle factor of Fourier Transform in this proposed method. Since the phase error is compensated, long time coherent integration can be achieved. The effectiveness of the proposed method is verified by the simulation results and the performance analysis. INDEX TERMS Long time coherent integration, maneuvering target, frequency hopping, Doppler migration.

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“…Due to its safety, convenience and low cost, bistatic SAR using transmitters of opportunity has attracted more and more attention and developed very quickly, both theoretically and practically, over the past few years [4,5,6,7,8]. …”

Section: Introductionmentioning

confidence: 99%

A Novel General Imaging Formation Algorithm for GNSS-Based Bistatic SAR

Zeng

Wang

Chen

et al. 2016

Sensors

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Global Navigation Satellite System (GNSS)-based bistatic Synthetic Aperture Radar (SAR) recently plays a more and more significant role in remote sensing applications for its low-cost and real-time global coverage capability. In this paper, a general imaging formation algorithm was proposed for accurately and efficiently focusing GNSS-based bistatic SAR data, which avoids the interpolation processing in traditional back projection algorithms (BPAs). A two-dimensional point target spectrum model was firstly presented, and the bulk range cell migration correction (RCMC) was consequently derived for reducing range cell migration (RCM) and coarse focusing. As the bulk RCMC seriously changes the range history of the radar signal, a modified and much more efficient hybrid correlation operation was introduced for compensating residual phase errors. Simulation results were presented based on a general geometric topology with non-parallel trajectories and unequal velocities for both transmitter and receiver platforms, showing a satisfactory performance by the proposed method.

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Experimental passive SAR imaging exploiting LTE, DVB, and DAB signals

Cited by 23 publications

References 10 publications

Emitter selection criteria for passive multistatic synthetic aperture radar imaging

Emitter selection criteria for passive multistatic synthetic aperture radar imaging

Long-Time Coherent Integration for Frequency Hopping Pulse Signal via Phase Compensation

A Novel General Imaging Formation Algorithm for GNSS-Based Bistatic SAR

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