Results 241 to 250 of about 9,296 (290)

Circular SAR GMTI

SPIE Proceedings, 2014
We describe techniques for improving ground moving target indication (GMTI) performance in multi-channel synthetic aperture radar (SAR) systems. Our approach employs a combination of moving reference processing (MRP) to compensate for defocus of moving target SAR responses and space-time adaptive processing (STAP) to mitigate the effects of strong ...
Douglas Page, Gregory Owirka, Howard Nichols, Steven Scarborough   +3 more
openaire   +1 more source

Multiple-input multiple-output circular SAR

2014 15th International Radar Symposium (IRS), 2014
Interest on circular and multicircular SAR acquisitions has been increased in the past few years due to the inherent potentials they provide, e.g., full 3-D reconstruction and subwavelength resolution. However, one main limitation is the size of the spotlighted region, which is basically defined by the range ambiguities, the pulse repetition frequency (
Ponce, Octavio, Rommel, Tobias, Younis, Marwan, Prats, Pau, Moreira, Alberto   +4 more
openaire   +2 more sources

FlexSAR multistatic circular SAR collection

2017 IEEE Radar Conference (RadarConf), 2017
Bistatic SAR data has advantages and disadvantages compared to monostatic data. This papers examines a combined bistatic and monostatic SAR data collection. The airborne platform used a monostatic radar system with two transmit and two receive channels in a pulsed spotlight mode. Another receive-only system was placed on an elevated mountaintop.
Chad Knight, Mark Jensen, Trevor Jewkes, Jacob Gunther   +3 more
openaire   +1 more source

SAR Parametric Imaging for Circular-Plate Target

IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, 2020
The traditional synthetic aperture radar (SAR) is an active acquisition instrument that generates radiation and captures signals backscattered from the illuminated scene. However, when the phases of each reflection path are highly similar, the received echoes may sum in a destructive way.
Yuhan Wen, Zegang Ding, Fan Feng, Yan Wang, Pei Xu, Xinliang Chen, Tao Zeng   +6 more
openaire   +1 more source

GMTI in Circular Sar Data Using STAP

2016 Sensor Signal Processing for Defence (SSPD), 2016
Nowadays, SAR-GMTI is becoming increasingly important since acquiring knowledge about moving objects and simultaneously imaging the area of interest has considerable advantages for both civil and non-civil applications. Monitoring and counting vehicles on highways or detecting non-cooperative moving targets on ground may demand different performances ...
Casalini, Emiliano, Henke, Daniel, Meier, Erich   +2 more
openaire   +2 more sources

Circular Micro-SAR for mini-UAV

2018 15th European Radar Conference (EuRAD), 2018
This paper presents a new multifunction radar that was specially designed for mini-UAV platforms. The multi-channel radar is omnidirectional, allowing great flexibility in radar- and flight operations. A demonstrator has been built, weighing 800 grams, and consuming 25 W. Flexible SAR, GMTI and novel sensing modes can be demonstrated with this system.
Otten, M.P.G., Maas, A.P.M., Bolt, R.J., Caro-Cuenca, M., Medenblik, H.   +4 more
openaire   +2 more sources

High resolution SAR imaging along circular trajectories

2007 IEEE International Geoscience and Remote Sensing Symposium, 2007
After a first series of full circle SAR acquisitions in L and P-bands during a 2004 joint FOI-ONERA campaign in Sweden, ONERA experimented in 2006 high resolution (15 cm) polarimetric, full circle acquisitions in France and Germany using its X-band sensor.
Hubert M.J. Cantalloube, Elise Colin Koeniguer, Helene Oriot   +2 more
openaire   +1 more source

Research of P band circular polarization SAR

2016 CIE International Conference on Radar (RADAR), 2016
For space-borne P band Synthetic Aperture Radar (SAR) application, an airborne experimental circular&linear polarimetric SAR system is developed, this paper presents the instrument and airborne test result. Compared to linear polarization of P band, circular polarimetric SAR shows remarkable penetration efficacy in tropical jungle foliage covered ...
Zhao Ning, Lu Jiaguo, Ge Jialong, Yao Baidong   +3 more
openaire   +1 more source

A Registration Strategy for Circular SAR Noncoherent Imaging

2020 IEEE Radar Conference (RadarConf20), 2020
Circular synthetic aperture radar (CSAR) enables 360-degree observation of the scene. Compared with coherent imaging, noncoherent imaging can suppress speckle and obtain a large number of texture features. However, due to the existence of a man-made anisotropic targets and the unique imaging geometry of CSAR, the different subaperture images are quite ...
Yuxiao Luo, Daoxiang An, Xiaotao Huang, Leping Chen, Wu Wang   +4 more
openaire   +1 more source

Circular SAR experiment for human body imaging

2007 1st Asian and Pacific Conference on Synthetic Aperture Radar, 2007
In this paper, the CSAR (circular synthetic aperture radar) technique is introduced firstly. The principle of CSAR 3D (three dimensional) imaging and the spatial wavenumber support are analyzed and the 3D resolution is discussed secondly. Secondly, Ku band fully-polarimetric CSAR human body imaging experiments are performed, and the experimental data ...
Wei-xian Tan, Yan-ping Wang, Wen Hong, Yi-rong Wu, Nan jing Li, Chu-feng Hu, Lin-xi Zhang   +6 more
openaire   +1 more source