19 Hits in 5.0 sec

Coherent MIMO radar for GMTI

Delphine Cerutti-Maori, Jens Klare
2010 2010 IEEE International Geoscience and Remote Sensing Symposium  
GMTI PERFORMANCE ANALYSIS The chosen GMTI metrics to analyze GMTI performance are the SCNR (Signal-to-Clutter-plus-Noise Ratio) and the CRB (Cramér-Rao Bound) for the estimation of the target position  ...  The scope of this paper is to derive a signal model for GMTI and to analyze different MIMO configurations based on spatial, frequency, and waveform diversity for their GMTI performance.  ... 
doi:10.1109/igarss.2010.5650179 dblp:conf/igarss/Cerutti-MaoriK10 fatcat:nplujkbap5bfbnxjy2on4istzy

Extended GLRT Detection of Moving Targets for Multichannel SAR Based on Generalized Steering Vector

Chong Song, Bingnan Wang, Maosheng Xiang, Wei Li
2021 Sensors  
However, in the multichannel SAR-ground moving-target indication (SAR-GMTI) system, image defocus is inevitable, which will remarkably degrade the performance of the GLRT detector, especially for the lower  ...  Theoretical analysis and simulated SAR data demonstrate the effectiveness and robustness of the proposed detector in the defocusing SAR images.  ...  In this section, performance factors are analyzed, including the quality of SAR image focus and SCR, and then the minimum detectable velocity (MDV) and the Cramer Rao Lower Bounds (CRLBs) for the radial  ... 
doi:10.3390/s21041478 pmid:33672621 fatcat:6ywlem7harhntikpo4fdt33nvm

FrFT-CSWSF: Estimating cross-range velocities of ground moving targets using multistatic synthetic aperture radar

Chenlei Li, Mei Liu, Bowen Zhao, Lei Zhang
2014 Chinese Journal of Aeronautics  
Estimating cross-range velocity is a challenging task for space-borne synthetic aperture radar (SAR), which is important for ground moving target indication (GMTI).  ...  The proposed hybrid method, which is based on an extended space-time model (ESTIM) of the azimuth signal, has two steps: first, a set of finite impulse response (FIR) filter banks based on a fractional  ...  The fact that the curves approach the Cramer-Rao bound (CRB) as SNR increases confirms that our method is statistically effective.  ... 
doi:10.1016/j.cja.2014.08.011 fatcat:lbaoouxgxjci3m756y56akdl5y

Table of contents

2018 2018 14th IEEE International Conference on Signal Processing (ICSP)  
doi:10.1109/icsp.2018.8652480 fatcat:elhxwghl3zbdflbxblxafw2f7i

Multichannel Along-Track Interferometric SAR Systems: Moving Targets Detection and Velocity Estimation

Alessandra Budillon, Vito Pascazio, Gilda Schirinzi
2008 International Journal of Navigation and Observation  
Then, we analyze the radial velocity estimation accuracy in terms of Cramer-Rao lower bounds and of mean square error values, obtained by using a maximum likelihood estimation technique.  ...  We consider the cases of single-baseline and dual-baseline satellite systems, and we evaluate the detection and estimation performance improvement obtained in the dual-baseline case with respect to the  ...  We evaluate numerically the Cramer-Rao lower bound (CRLB) of the estimated (normalized) velocity for the two different target statistical models considered above, and we estimate the target radial velocity  ... 
doi:10.1155/2008/310656 fatcat:hvunwaczgrdjxdyx5rbtjrwhuy

Very-High-Resolution Airborne Synthetic Aperture Radar Imaging: Signal Processing and Applications

Andreas Reigber, Rolf Scheiber, Marc Jager, Pau Prats-Iraola, Irena Hajnsek, Thomas Jagdhuber, Konstantinos P. Papathanassiou, Matteo Nannini, Esteban Aguilera, Stefan Baumgartner, Ralf Horn, Anton Nottensteiner (+1 others)
2013 Proceedings of the IEEE  
Today's airborne sensors are capable of delivering high-quality SAR data with decimeter resolution and allow the development of novel approaches in data analysis and information extraction from SAR.  ...  In this paper, a review about the abilities and needs of today's very high-resolution airborne SAR sensors is given, based on and summarizing the longtime experience of the German Aerospace Center (DLR  ...  To measure the along-track displacement (mutual shift), the so-called spectral diversity technique [52] was used, which achieves the Cramér-Rao bound in the estimation of the coregistration error [83  ... 
doi:10.1109/jproc.2012.2220511 fatcat:rcfgf3agi5elha6pcjjyyzr7cu

A Novel Detection Scheme in Image Domain for Multichannel Circular SAR Ground-Moving-Target Indication

Qinghai Dong, Bingnan Wang, Maosheng Xiang, Zhongbin Wang, Yachao Wang, Chong Song
2022 Sensors  
Circular synthetic aperture radar (CSAR), which can observe the region of interest for a long time and from multiple angles, offers the opportunity for moving-target detection (MTD).  ...  Measured data verified that the PFA of the proposed method is only 20% that of the comparison method, with improved detection of slow and weakly moving targets and with better robustness.  ...  valuable conversations and comments.  ... 
doi:10.3390/s22072596 pmid:35408210 pmcid:PMC9002910 fatcat:7kydc3244zgc3pskvowq6zrfom

Passive Radar STAP Detection and DoA Estimation Under Antenna Calibration Errors

Giovanni Paolo Blasone, Fabiola Colone, Pierfrancesco Lombardo, Philipp Wojaczek, Diego Cristallini
2021 IEEE Transactions on Aerospace and Electronic Systems  
The effectiveness of the proposed approaches is tested against both simulated and experimental data from a DVB-T-based mobile passive radar.  ...  For more information, see second scheme, at the expense of an additional stage, offers slightly better detection performance and preserves target direction-of-arrival  ...  the proposed calibration approach, we also consider the Cramér-Rao bound (CRB).  ... 
doi:10.1109/taes.2021.3061803 fatcat:m7zdxdlnmvervn7qxs5kyrry64

Geosynchronous Spaceborne-Airborne Bistatic Moving Target Indication System: Performance Analysis and Configuration Design

Xichao Dong, Chang Cui, Yuanhao Li, Cheng Hu
2020 Remote Sensing  
The relationship between the MTI performance and bistatic configuration parameters is derived analytically and analyzed based on the maximum output signal to clutter and noise ratio (SCNR) criterion.  ...  In this paper, we propose a bistatic configuration design method to jointly optimize the MTI and SAR imaging performance for GEO SA-BSAR MTI system.  ...  Figure 5 . 5 Cramer-Rao lower bounds (CRLBs) for radial velocity and azimuth position of different bistatic configurations: (a) CRLBs for radial velocity of configurations 1~4; (b) CRLBs for radial velocity  ... 
doi:10.3390/rs12111810 fatcat:geah3grhwzdl5ij3vg7hww5gge

InSAR Phase Unwrapping Based on Square-Root Cubature Kalman Filter

Xiaomei Luo, Li Hongtao, Zhilong Dong, Shengqi Zhu
2020 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
Simulation results based on synthetic data, true InSAR data, and measured (real) InSAR data show that the proposed InSAR phase unwrapping method can achieve better performance compared with other existing  ...  The strategy ensures that the SCKFPU method simultaneously performs noise suppression and unwraps InSAR images along the pixels with high-reliance to the pixels with low-reliance.  ...  Cramer-Rao lower bound (CRLB) provides a lower bound for the second-order (mean-squared) error of any estimate method [30] .  ... 
doi:10.1109/jstars.2020.3015739 fatcat:skvxgf4dufa3pkma6d2gmtlvwe

Ambiguity Function of the Transmit Beamspace-Based MIMO Radar

Yongzhe Li, Sergiy A. Vorobyov, Visa Koivunen
2015 IEEE Transactions on Signal Processing  
Corresponding bounds for these two cases are derived, and it is shown that the bound for the worst case is inversely proportional to the number of transmitted waveforms K, whereas the bound for the best  ...  In this paper, we derive an ambiguity function (AF) for the transmit beamspace (TB)-based multipleinput multiple-output (MIMO) radar for the case of far-field targets and narrow-band waveforms.  ...  Moreover, the Cramér-Rao bound (CRB) derived for the TB-based MIMO radar in [8] demonstrates that it can achieve a lower CRB with fewer waveforms than the traditional MIMO radar with full waveform diversity  ... 
doi:10.1109/tsp.2015.2439241 fatcat:a5zoclfisvfdtncnfm3dpy2bje

A Novel Post-Doppler Parametric Adaptive Matched Filter for Airborne Multichannel Radar

Chong Song, Bingnan Wang, Maosheng Xiang, Zhongbin Wang, Weidi Xu, Xiaofan Sun
2020 Remote Sensing  
space–time adaptive processing (PD-STAP) in practical applications.  ...  Improper training data and contamination of moving target signals remarkably degrade the performance of disturbance suppression and result in target cancellation by self-whitening.  ...  The authors also would like to thank Pan Zhao for assisting them in revising the typography and grammar.  ... 
doi:10.3390/rs12244017 fatcat:guaszrxjrjha7px2zdxklawvtq

Multipath Exploitation in Non-LOS Urban Synthetic Aperture Radar

Pawan Setlur, Tadahiro Negishi, Natasha Devroye, Danilo Erricolo
2014 IEEE Journal on Selected Topics in Signal Processing  
While these techniques are general, they are examined for two important urban radar applications: detecting shadowed targets in an urban canyon, and detecting shadowed targets around corners.  ...  that the target multipath is resolvable and detectable.  ...  Sobota and M. Rangaswamy from the US AFRL for their comments and discussions related to multipath exploitation in radar.  ... 
doi:10.1109/jstsp.2013.2287185 fatcat:ch2zg52uyfcv7hdrfobwk32bwy

Toward Operational Compensation of Ionospheric Effects in SAR Interferograms: The Split-Spectrum Method

Giorgio Gomba, Alessandro Parizzi, Francesco De Zan, Michael Eineder, Richard Bamler
2016 IEEE Transactions on Geoscience and Remote Sensing  
The processor should be robust and accurate to meet the scientific requirements for the measurement of geophysical processes, and it should be applicable on a global scale.  ...  An implementation of the split-spectrum method, which will be one element of the processor, is presented in detail, and its performance is analyzed.  ...  Brcic for his previous work on the split-spectrum method, the anonymous reviewers who helped to improve the quality of this paper, and the Japanese Aerospace Exploration Agency for providing the PALSAR  ... 
doi:10.1109/tgrs.2015.2481079 fatcat:rzqfjjsxrfgvnnpdpcto6j3i2a

Design of large polyphase filters in the Quadratic Residue Number System

Gian Carlo Cardarilli, Alberto Nannarelli, Yann Oster, Massimo Petricca, Marco Re
2010 2010 Conference Record of the Forty Fourth Asilomar Conference on Signals, Systems and Computers  
We have previously proposed a framework for calculating the Fisher information, and hence the Cramer-Rao lower bound, for estimating parameters (e.g., single molecule location) from the images produced  ...  Furthermore, the performance of the derived estimator is compared in Monte-Carlo simulations with (i) the Cram\'er-Rao lower bound and (ii) with the performance of an iterative maximum-likelihood estimator  ... 
doi:10.1109/acssc.2010.5757589 fatcat:ccxnu5owr5fyrcjcqukumerueq
« Previous Showing results 1 — 15 out of 19 results