VHF/UHF bistatic and passive SAR ground imaging

Ulander, Lars M. H.; Frölind, P.-O.; Gustavsson, A.; Ragnarsson, Rolf; Stenström, G.

doi:10.1109/radar.2015.7131080

Cited by 32 publications

(14 citation statements)

References 14 publications

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“…The preliminary investigation of the major system characteristics, such as resolution, sensitivity, satellite bus and payload have already been considered in [4]. Additionally, DVB-T SAR has already been shown to be fundamentally possible [5][6][7][8][9].…”

Section: Fig 1 Passat Concept-art Visualmentioning

confidence: 99%

“…The second method is based on the assumption that the direct signal is inadvertently collected by the radar antenna itself (most likely through its side-lobes, but that depends on the bistatic geometry). Therefore, range compression can be implemented simply by auto-correlating the radar data [6][7][8]. This method relies on the direct signal having a sufficient Signal-to-Noise Ratio (SNR), however it eliminates the need for an extra receiving channel.…”

Section: Image Formationmentioning

confidence: 99%

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Passive SAR satellite (PASSAT) system: airborne demonstrator and first results

Atkinson

Sayin

Stove

et al. 2019

IET Radar, Sonar & Navigation

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This paper presents the development and execution of an airborne experimental campaign as part of the continuing investigation of a passive Synthetic Aperture Radar using digital television broadcasting stations as illuminators of opportunity, and micro-/nano-satellite receivers in Low Earth Orbit. For the flight experiments, a hardware demonstrator was developed that utilised two receiving antennas, allowing both cross-correlation and auto-correlation range compression schemes, and was mounted to an airborne platform to image stationary rural areas up to 50 km from the transmitter. This paper presents the first image results of these experiments as well as initial analysis of image formation aspects including, range compression scheme and effects on the image quality of the signal to noise on the reference channel.

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Section: Fig 1 Passat Concept-art Visualmentioning

confidence: 99%

Section: Image Formationmentioning

confidence: 99%

Passive SAR satellite (PASSAT) system: airborne demonstrator and first results

Atkinson

Sayin

Stove

et al. 2019

IET Radar, Sonar & Navigation

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show abstract

“…In this paper, inspired by the Swedish LORA system (e.g. [12]), the direct signal channel is omitted. Apart from halving hardware complexity, there are several practical situations where this kind of configuration may be a desirable or even the only solution.…”

Section: Introductionmentioning

confidence: 99%

Improved Passive SAR Imaging With DVB-T Transmissions

Fang

Atkinson

Sayin

et al. 2020

IEEE Trans. Geosci. Remote Sensing

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Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document. When citing, please reference the published version. Take down policy While the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

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“…Hence, it is a significant advantage that the monostatic and bistatic SAR systems work using the LFUWB transmitted signal. Some countries have conducted the imaging experiment of the monostatic and bistatic LF UWB SAR, and the excellent results were obtained [18] [19] [20] [21] [22].…”

Section: Introductionmentioning

confidence: 99%

Monostatic and Bistatic Low Frequency Ultrawideband SAR Imaging Experiment

Xie¹,

Chen²,

Li³

et al. 2018

JCC

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Low frequency ultrawideband (LF UWB) synthetic aperture radar (SAR) has lately become of a particular interest to SAR community. Monostatic and bistatic LF UWB SAR system has the well foliage penetrating capability, high-resolution imaging and providing the increased information. In 2015, a monostatic and bistatic LF UWB SAR imaging experiment was conducted. In this experiment, the monostatic and bistatic data were collected simultaneously by operating a moving vehicle-based radar in the SAR mode, in conjunction with a stationary ground-based receiver. The aim was to investigate the imaging property of the bistatic LF UWB SAR system. The one pulse per second (1 PPS) signal in combination with the global position system (GPS) disciplined 100 MHz oscillator from the GPS receivers was used to implement the time and frequency synchronization in this SAR system. The bistatic SAR image was obtained by the subaperture spectrum-equilibrium method integrated with the fast factorized back projection (FFBP) algorithm. Bistatic experiment results are show to prove the validity of the bistatic LF UWB SAR imaging experiment.

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VHF/UHF bistatic and passive SAR ground imaging

Cited by 32 publications

References 14 publications

Passive SAR satellite (PASSAT) system: airborne demonstrator and first results

Passive SAR satellite (PASSAT) system: airborne demonstrator and first results

Improved Passive SAR Imaging With DVB-T Transmissions

Monostatic and Bistatic Low Frequency Ultrawideband SAR Imaging Experiment

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