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Sidelobe Suppression Techniques for Near-Field Multistatic SAR. [PDF]
Sensors (Basel), 2023 Multirotor Unmanned Air Systems (UAS) represent a significant improvement in capability for Synthetic Aperture Radar (SAR) imaging when compared to traditional, fixed-wing, platforms. In particular, a swarm of UAS can generate significant measurement diversity through variation of spatial and frequency collections across an array of sensors.
Price GAJ, Moate C, Andre D, Yuen P.
europepmc +6 more sources
Coordinating Complementary Waveforms for Sidelobe Suppression [PDF]
2011 Conference Record of the Forty Fifth Asilomar Conference on Signals, Systems and Computers (ASILOMAR), 2011 We present a general method for constructing radar transmit pulse trains and receive filters for which the radar point-spread function in delay and Doppler, given by the cross-ambiguity function of the transmit pulse train and the pulse train used in the
Calderbank, Robert +4 more
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Sidelobe Suppression for Capon Beamforming with Mainlobe to Sidelobe Power Ratio Maximization [PDF]
IEEE Antennas and Wireless Propagation Letters, 2011 High sidelobe level is a major disadvantage of the Capon beamforming. To suppress the sidelobe, this paper introduces a mainlobe to sidelobe power ratio constraint to the Capon beamforming. it minimizes the sidelobe power while keeping the mainlobe power
Liu, Yipeng, Wan, Qun
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On the suppression of the sidelobes of the supercurrent in small Josephson tunnel junctions [PDF]
, 1991 The critical currents of Nb/Al, Al-oxide, Al/Nb tunnel junctions of various shapes have been measured as a function of the applied magnetic field. For the square junction and for some special shapes like the diamond, ¿1 + cosine¿ and quartic junctions ...
Flokstra, J. +3 more
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Sidelobe Suppression in OFDM Systems [PDF]
, 2006 In this contribution, we develop a method for reducing out-of-band emis- sion caused by high sidelobes in OFDM systems. The method is termed multiple-choice sequences (MCS) and operates in the frequency domain of an OFDM system. The principle of MCS is to map the original trans- mission sequence onto a set of sequences and to choose, from this set, a ...
Cosovic, Ivan +1 more
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Spillover and diffraction sidelobe contamination in a double-shielded experiment for mapping Galactic synchrotron emission [PDF]
, 2000 We have analyzed observations from a radioastronomical experiment to survey the sky at decimetric wavelengths along with feed pattern measurements in order to account for the level of ground contamination entering the sidelobes.
Bensadoun, M. +8 more
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A technique for sidelobe suppression in OFDM systems [PDF]
GLOBECOM '05. IEEE Global Telecommunications Conference, 2005., 2005 In this paper, a new technique for sidelobe suppression in orthogonal frequency-division multiplexing (OFDM) systems is proposed and investigated. This technique can be applied to both pure OFDM and OFDM based multiple-access systems to improve spectral efficiency.
Cosovic, Ivan +2 more
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Sidelobe Suppression for Robust Beamformer via The Mixed Norm Constraint [PDF]
, 2011 Applying a sparse constraint on the beam pattern has been suggested to suppress the sidelobe of the minimum variance distortionless response (MVDR) beamformer recently.
Liu, Yipeng, Wan, Qun
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A Robust Beamformer Based on Weighted Sparse Constraint [PDF]
, 2010 Applying a sparse constraint on the beam pattern has been suggested to suppress the sidelobe level of a minimum variance distortionless response (MVDR) beamformer.
Chu, Xiaoli, Liu, Yipeng, Wan, Qun
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A low sidelobe asymmetric beam antenna for high altitude platform communications [PDF]
, 2004 In a communications network served by a high altitude platform, the antenna beams illuminating each cell require minimized sidelobe powers. Asymmetric beams are advantageous so that cell footprints remain circular.
Thornton, J.
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