Research on Spatial Resolution of One-Stationary Bistatic Ultrahigh Frequency Ultrawidebeam–Ultrawideband SAR Based on Scattering Target Wavenumber Domain Support

Xie, Hongtu; An, Daoxiang; Huang, Xiaotao; Zhang, Zhimin

doi:10.1109/jstars.2015.2414412

Cited by 41 publications

(8 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…agricultural land, forests, soils, mineral deposits and water resources) [12]- [16] and the environment (such as the industrial pollution, biodiversity, natural hazards and land degradation) [17]- [19]. Synthetic aperture radar (SAR) [20] is the widely used sensor, which plays a very significant role in the remote sensing, earth observation and so on, and hence it is attracted in the military and civilian fields [20]- [25].…”

Section: Introductionmentioning

confidence: 99%

High-Efficiency and High-Precision Reconstruction Strategy for P-Band Ultra-Wideband Bistatic Synthetic Aperture Radar Raw Data Including Motion Errors

Xie

Duan

et al. 2020

IEEE Access

Self Cite

View full text Add to dashboard Cite

P-band ultra-wideband bistatic synthetic aperture radar (UWB BSAR) has the well capability of the foliage penetrating, high-resolution imaging and adding the scattered information, which is potential of detecting the concealed target. However, the P-band UWB BSAR raw data is of the huge amount, big spatial-variance, significant range azimuth coupling and complicated motion error, which increases the difficulty of the efficient and precise reconstruction. In this paper, we propose a reconstruction strategy for the P-band UWB BSAR raw data including the motion errors, which can solve the above problems with the high-efficiency and high-precision. This method requires the local beamforming from the raw data as an intermediate processing in the slant range plane instead of ground plane, which can be exactly referenced to the tracks of the transmitter and receiver considering platform altitudes. And, it derives the requirement for selecting the subapertures and subimages by analyzing the bistatic range error considering the motion errors, as well as sampling requirement of the beam for the subimages, which offers a near-optimum tradeoff between the precision and efficiency. Simulated and measured results show that the proposed strategy is effective, and can achieve the near optimal performance with the low computational complexity. INDEX TERMS Bistatic synthetic aperture radar (BSAR), fast factorized backprojection (FFBP), high-efficiency and high-precision reconstruction, motion errors, P-band ultra-wideband.

show abstract

Section: Introductionmentioning

confidence: 99%

High-Efficiency and High-Precision Reconstruction Strategy for P-Band Ultra-Wideband Bistatic Synthetic Aperture Radar Raw Data Including Motion Errors

Xie

Duan

et al. 2020

IEEE Access

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, high resolution, high-speed and wide view angle data acquisition is realized. Since the transmitter is mounted on a stationary platform or a low-speed platform in the AA-BiSAR system, a moving passive receiver platform is the only factor to be considered when solving problems for instance motion compensation and parameter estimation [29][30][31][32][33]. Furthermore, as the variation of the transmitting slant range does not or hardly impacts on the azimuth resolution, AA-BiSAR can be used in the fields of emergency landing, self-landing, air-drop supplies, terminal guidance, moving target indication etc.…”

Section: Introductionmentioning

confidence: 99%

Focusing Arc-Array Bistatic Synthetic Aperture Radar Data Based on Keystone Transform

Huang

et al. 2019

Electronics

View full text Add to dashboard Cite

Arc-array synthetic aperture radar (AA-SAR) has become a novel imaging scheme for full azimuth observation. However, the exiting arc-array monostatic SAR system is placed on a single platform and is easy to detect. Arc-array bistatic SAR (AA-BiSAR) with a stationary transmitter is proposed in this paper, which can obtain high data acquisition efficiency and reduce vulnerability of arc-array monostatic SAR. Furthermore, since the azimuth resolution with full azimuth observation is not related to the location of the stationary transmitter, the transmitter can be placed far away from the receiver. Compared with imaging algorithms for other modes, the key points of AA-BiSAR imaging algorithms are a square root in the bistatic slant range equation and an arc synthetic array in azimuth. According to the imaging geometry of AA-BiSAR, a novel imaging approach for AA-BiSAR based on keystone transform (KT) is proposed, and the KT implements range-cell migration correction (RCMC) in conditions of trigonometric function under square root in the range history and arc synthetic array in azimuth via reformatting the AA-BiSAR raw data. Besides presenting the proposed imaging approach, a complete resolution analysis of AA-BiSAR is given. Results of numerical simulation experiments on point targets validate the proposed imaging approach.

show abstract

“…If the bistatic SAR system includes more than one receivers or transmitters, the scene can be illuminated at the different angles, which can acquire the increased information of the targets. The one-stationary bistatic SAR is a special bistatic SAR system [11] [12] [13], which has a moving transmitter (receiver) and a stationary transmitter (receiver). One-stationary bistatic SAR system not only inherits the advantages of the general bistatic SAR system, but also is easy to build and implement imaging, thus it has attracted the wide attention.…”

Section: Introductionmentioning

confidence: 99%

Monostatic and Bistatic Low Frequency Ultrawideband SAR Imaging Experiment

Xie¹,

Chen²,

Li³

et al. 2018

JCC

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Research on Spatial Resolution of One-Stationary Bistatic Ultrahigh Frequency Ultrawidebeam–Ultrawideband SAR Based on Scattering Target Wavenumber Domain Support

Cited by 41 publications

References 33 publications

High-Efficiency and High-Precision Reconstruction Strategy for P-Band Ultra-Wideband Bistatic Synthetic Aperture Radar Raw Data Including Motion Errors

High-Efficiency and High-Precision Reconstruction Strategy for P-Band Ultra-Wideband Bistatic Synthetic Aperture Radar Raw Data Including Motion Errors

Focusing Arc-Array Bistatic Synthetic Aperture Radar Data Based on Keystone Transform

Monostatic and Bistatic Low Frequency Ultrawideband SAR Imaging Experiment

Contact Info

Product

Resources

About