Results 241 to 250 of about 6,104,035 (281)
Some of the next articles are maybe not open access.
A method of ambiguous range suppression
2018 Ural Symposium on Biomedical Engineering, Radioelectronics and Information Technology (USBEREIT), 2018A method for processing the current signal of the surveillance radar is proposed, which makes it possible to suppress marks corresponding to targets outside the range of unambiguous range measurement, as well as a mark of non-synchronous impulse noise.
V. A. Khlusov, A. V. Novikov
openaire +1 more source
, 2004 This paper presents a novel range ambiguity raw data simulator (RAS). The simulator was used to investigate range ambiguity suppression obtained by means of up and down chirp coding for point targets and realistic scenes including extended targets. A pre-
Márquez-Martínez, J., Mittermayer, J.
openaire +2 more sources
Range Ambiguous Clutter Suppression Approach With Elevation Time Diverse Array
IEEE Transactions on Aerospace and Electronic Systems, 2022When range ambiguity and range dependence coexist in forward-looking ground moving target indication (GMTI) radar, the traditional space-time adaptive processing (STAP) approaches may fail to work. To cope with this issue, a range-ambiguous clutter suppression approach based on elevation time diverse array (TDA) radar system and azimuth phase coding ...
Xiongpeng He +4 more
openaire +2 more sources
SAR range ambiguity suppression via sparse regularization
2012 IEEE International Geoscience and Remote Sensing Symposium, 2012Range ambiguity in synthetic aperture radar (SAR) imaging primarily arises from scattered energy of bright targets outside the interested region. So to reduce the ambiguity, we need to identify these targets additionally, which yields an ill-posed problem.
Jian Fang 0001 +4 more
openaire +1 more source
Range-Dependent Ambiguous Clutter Suppression for Airborne SSF-STAP Radar
IEEE Transactions on Aerospace and Electronic Systems, 2022Range-dependent clutter suppression is a challenging problem in non-sidelooking (NSL), bistatic, and conformal antenna array airborne radar, especially in the presence of range ambiguity. Superimposed stepped frequency (SSF) radar employs a small frequency increment across the stepped signals in each pulse, which induces a dimension related to slant ...
Wei Chen 0106 +2 more
openaire +2 more sources
The Range Ambiguity Suppression Based On Amplitude Modulation Chirp
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019Range and azimuth ambiguities are contradictory in SAR system, which restrict the improvements of resolution and swath in satellite platform. Multichannel needs big and complex antenna. And it is proved that orthogonal transmitting signals cannot suppress range ambiguity.
Peng Xiao 0001 +3 more
openaire +1 more source
CEBRAS: Cross Elevation Beam Range Ambiguity Suppression for High-Resolution Wide-Swath and MIMO-SAR Imaging [PDF]
, 2015 In this paper we propose a new hybrid technique to suppress range ambiguities in spaceborne SAR systems with multiple elevation beams. First, conventional scan-on-receive (SCORE) is performed in real-time onboard the satellite by employing a set of ...
Michelangelo Villano +2 more
exaly +2 more sources
OFDM signal design for range ambiguity suppression in SAR configuration
2012 IEEE International Geoscience and Remote Sensing Symposium, 2012Remote sensing applications need specific signal processing to obtain high resolution for radar images. One of limitations for synthetic aperture radar (SAR) systems is the range ambiguity phenomenon that appears with long delayed echoes. The reflected signal corresponding to the pulse (n) is detected when the radar has already transmitted the next ...
Riché, Vishal +3 more
openaire +3 more sources
Range Ambiguous Clutter Suppression for Airborne FDA-STAP Radar
IEEE Journal of Selected Topics in Signal Processing, 2015Airborne radar arrays oriented toward any direction other than sidelooking cause the range dependence of clutter. It is difficult to handle this range dependence problem in the presence of range ambiguity. Frequency diverse array (FDA) employs a small frequency increment across the array elements, which induces the spatial frequency variant with ...
Jingwei Xu 0002 +2 more
openaire +1 more source
Suppression of range ambiguities in synthetic aperture radar systems
The IEEE Region 8 EUROCON 2003. Computer as a Tool., 2004One of the principle limitations of synthetic aperture radar (SAR) systems is the restriction on resolution and coverage. In a conventional SAR simultaneous wide swath (coverage) and high cross range resolution is not possible, since the two requirements contradict each other.
Stein, U., Younis, M.
openaire +1 more source