Results 171 to 180 of about 4,848 (220)

Bistatic SAR: Forecasting Spatial Resolution

IEEE Transactions on Aerospace and Electronic Systems, 2019
This paper derives closed-form expressions for bistatic synthetic aperture radar (SAR) spatial resolution of a generalized system from the $k$ -space or the wavenumber domain. These spatial resolution equations have not previously appeared in the literature.
William Dower, Mark Yeary
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Space-surface bistatic SAR-GMTI

Proceedings of 2011 IEEE CIE International Conference on Radar, 2011
A space-surface bistatic SAR-GMTI algorithm is proposed here and the clutter characters are also discussed. Then a reference signal is adopted for range compression, which can make the range cell migration and Doppler centroid decreased largely. Furthermore, the clutter Doppler and phase are analysed as well as the phase difference characteristics, a ...
null Liao Yi, null Qian Jiang, null Yang Lei, null Xing Mengdao   +3 more
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Low frequency bistatic SAR measurements

2012 IEEE International Geoscience and Remote Sensing Symposium, 2012
Airborne bistatic SAR data have been collected at VHF- and UHF-band to investigate clutter suppression in forested and urban areas. The synchronization between the SAR systems is accomplished using the 1-PPS signal provided by the GPS system. The same signal is also used as input to a disciplined 10 MHz master oscillator integrated in both radar ...
Anders Gustavsson, Lars M.H. Ulander, Bjorn Flood, Per-Olov Frolind, Tommy Jonsson, Bjorn Larsson, Daniel Murdin, Rolf Ragnarsson, Johan Rasmusson, Gunnar Stenstrom   +9 more
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Bistatic SAR Motion Compensation

2017
In this chapter, we focus on motion compensation in bistatic SAR. Motion compensation is an important and challenging issue for obtaining focused imagery from monostatic and bistatic SAR data. Due to fluctuations in the linear motion of the airborne SAR platform, the trace always deviates from an ideal straight line, which alters the regular phase ...
Robert Wang, Yunkai Deng
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Range Linearization for Bistatic SAR

IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018
In bistatic SAR, range is difficult to be linearized for the complicated geometry. In this paper, comparing to monostatic SAR, a modified range direction is derived based on vector analysis. The scatters along this direction will be imaged to the same azimuth cell which is important for the nonlinear chirp scaling (NLCS) algorithm.
Gaogao Liu, Dan Bao, Bin Wu, Guadong Qin, Jingjing Cai   +4 more
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Fundamentals of Bistatic SAR

2017
Bistatic SAR (BiSAR) has been developing for 40 years, and it is still a topic of much discussion in the field of radar. BiSAR is a SAR system whose transmitter and receiver are spatially separated. This separation improves the system’s capability, reliability and flexibility, making it a promising and useful supplement to a classical monostatic SAR ...
Robert Wang, Yunkai Deng
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Focusing of bistatic SAR data

SPIE Proceedings, 2014
The problems of simulation of bistatic SAR raw data and focusing are studied. A discrete target simulator is described. The simulator introduces the scene topography and compute the integration time of general bistatic configurations providing a means to derived maps of the range and azimuth spatial resolutions.
Pietro Bia, Nicola Ricci, Mariantonietta Zonno, Giovanni Nico, Joao Catalao, Manlio Tesauro   +5 more
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Bistatic FOPEN SAR

2011
This chapter has illustrated the advantages of a bistatic FOPEN SAR receiver working in concert with a tethered airborne GMTI radar illuminator. The potential for moderate resolution SAR operation is made possible by the shortrange, higher angular rate collection of a bistatic adjunct receiver.
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Bistatic SAR: theory and simulation

2005 IEEE Antennas and Propagation Society International Symposium, 2005
At present, the most used configuration for synthetic aperture radar imaging is the monostatic one (i.e. transmitter and receiver use the same antenna). However, the multiplication of stealth radar targets and the need for more accurate observations imply new radar imaging configurations and processing developments.
F. Comblet, F. Pellen, A. Baussard, A. Khenchaf   +3 more
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Bistatic parasitic SAR processor evaluation

IEEE International IEEE International IEEE International Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004, 2004
Bistatic radar systems will pay a great role in the coming decade since a large number of radar missions are being foreseen. Using existing transmitters, formations of small passive receivers will enhance our capability to gather backscatter information from Earth.
J. Sanz-Marcos, J.J. Mallorqui, A. Broquetas   +2 more
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