Holger Nies

发表

Focusing bistatic SAR Data in double sliding spotlight mode with TerraSAR-X and PAMIR based on azimuth chirp filtering

Joachim H. G. Ender, Jens Klare, Otmar Loffeld, 2012 .

Focusing of General Bistatic SAR Configuration Data With 2-D Inverse Scaled FFT

Otmar Loffeld, Holger Nies, Koba Natroshvili, 2006, IEEE Transactions on Geoscience and Remote Sensing.

Low-Cost Passive Radar Using OFDM Broadcast

Otmar Loffeld, Holger Nies, Florian Behner, 2019, 2019 IEEE Radar Conference (RadarConf).

Bistatic SAR Processing for Spaceborne/Airborne Configuration

Joachim H. G. Ender, Otmar Loffeld, Holger Nies, 2010 .

Focusing Spaceborne/Airborne Hybrid Bistatic SAR Data Using Wavenumber-Domain Algorithm

Joachim H. G. Ender, Otmar Loffeld, Robert Wang, 2009, IEEE Transactions on Geoscience and Remote Sensing.

Orbit estimation of the interferometric cartwheel using an extended linearized Kalman filter

Otmar Loffeld, Holger Nies, U. Gebhardt, 2003, IGARSS 2003. 2003 IEEE International Geoscience and Remote Sensing Symposium. Proceedings (IEEE Cat. No.03CH37477).

Analytical Approximation Model for Quadratic Phase Error Introduced by Orbit Determination Errors in Real-Time Spaceborne SAR Imaging

Jie Chen, Otmar Loffeld, Holger Nies, 2019, Remote. Sens..

Bistatic Exploration using Spaceborne and Airborne SAR Sensors: A Close Collaboration Between FGAN, ZESS, and FOMAAS

Wolfgang Wiechert, Andreas Kolb, Joachim H. G. Ender, 2006, 2006 IEEE International Symposium on Geoscience and Remote Sensing.

A data fusion approach for distributed orbit estimation

Wolfgang Wiechert, Otmar Loffeld, Holger Nies, 2004, IGARSS 2004. 2004 IEEE International Geoscience and Remote Sensing Symposium.

Synchronization and Processing in the HITCHHIKER Bistatic SAR Experiment

Otmar Loffeld, Holger Nies, Florian Behner, 2016, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing.

Optimizing the Individual Azimuth Contribution of Transmitter and Receiver Phase terms in Loffeld's Bistatic Formula (LBF) for Bistatic SAR Processing

Otmar Loffeld, Holger Nies, Robert Wang, 2008, IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium.

Analysis and compensation for motion errors in FMCW SAR data

Helmut Essen, Otmar Loffeld, Robert Wang, 2010, 2010 IEEE International Geoscience and Remote Sensing Symposium.

Phase Unwrapping using 2D-Kalman Filter - Potential and Limitations

Otmar Loffeld, Robert Wang, Holger Nies, 2008, IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium.

First steps to bistatic focusing

Otmar Loffeld, Holger Nies, Koba Natroshvili, 2005, Proceedings. 2005 IEEE International Geoscience and Remote Sensing Symposium, 2005. IGARSS '05..

Analysis of Quadratic Phase Error Introduced by Orbit Determination in Spaceborne Trinodal Pendulum Sar Formation Real-Time Imaging with Monte Carlo Simulation

Otmar Loffeld, Holger Nies, Jie Chen, 2019, IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium.

Orbit tracking and interpolation using a realistic gravitation model

Otmar Loffeld, Holger Nies, Stefan Knedlik, 2004, IGARSS 2004. 2004 IEEE International Geoscience and Remote Sensing Symposium.

A Multi Channel Antenna Setup for Trajectory Estimation of Moving Targets for ISAR Imaging Using Time Difference of Arrival with the HITCHHIKER Noise

Otmar Loffeld, Holger Nies, Florian Behner, 2016 .

Doppler Parameter Estimation Model Using Onboard Orbit Determination and Inter-satellite Distance Measurement for Spaceborne Bistatic SAR Real-time Imaging

Wei Yang, Otmar Loffeld, Holger Nies, 2019, 2019 6th Asia-Pacific Conference on Synthetic Aperture Radar (APSAR).

Synchronization and Preprocessing of Hybrid Bistatic SAR Data in the HITCHHIKER Experiment

Otmar Loffeld, Holger Nies, Florian Behner, 2014 .

Interactive Dynamic Range Reduction for SAR Images

Andreas Kolb, Holger Nies, Martin Lambers, 2008, IEEE Geoscience and Remote Sensing Letters.

IMage formation algorithm for bistatic forward-looking SAR

Otmar Loffeld, Robert Wang, Holger Nies, 2010, 2010 IEEE International Geoscience and Remote Sensing Symposium.

Analysis and Focusing of Bistatic Airborne SAR Data

Otmar Loffeld, Holger Nies, Koba Natroshvili, 2007, IEEE Transactions on Geoscience and Remote Sensing.

Second-order motion compensation in bistatic airborne SAR based on a geometrical approach

Otmar Loffeld, Holger Nies, Amaya Medrano Ortiz, 2007, 2007 IEEE International Geoscience and Remote Sensing Symposium.

A general bistatic SAR focusing algorithm for azimuth variant and invariant configurations

Otmar Loffeld, Robert Wang, Holger Nies, 2012 .

2D Inverse Scaling Bistatic Processing and the focused Image Quality Measurements

Joachim H. G. Ender, Otmar Loffeld, Holger Nies, 2006, 2006 IEEE International Symposium on Geoscience and Remote Sensing.

Parameter estimation for bistatic constellations

Otmar Loffeld, Ingo Walterscheid, Holger Nies, 2005, Proceedings. 2005 IEEE International Geoscience and Remote Sensing Symposium, 2005. IGARSS '05..

Modular SAR Simulator for Bi- and Multistatic Constellations

Wolfgang Wiechert, Otmar Loffeld, Holger Nies, 2006, 2006 IEEE International Symposium on Geoscience and Remote Sensing.

Models and useful relations for bistatic SAR processing

Otmar Loffeld, Holger Nies, Stefan Knedlik, 2004, IEEE Transactions on Geoscience and Remote Sensing.

Phase Unwrapping for SAR Interferometry—A Data Fusion Approach by Kalman Filtering

Otmar Loffeld, Holger Nies, Stefan Knedlik, 2008, IEEE Transactions on Geoscience and Remote Sensing.

Evaluation of analytic point target spectra for bistatic SAR

Otmar Loffeld, Jinshan Ding, Robert Wang, 2009, 2009 2nd Asian-Pacific Conference on Synthetic Aperture Radar.

Image Registration of TerraSAR-X Data using Different Information Measures

Otmar Loffeld, Robert Wang, Holger Nies, 2008, IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium.

A Bistatic Analytical Approximation Model for Doppler Rate Estimation Error from Real-Time Spaceborne SAR Onboard Orbit Determination Data

Jie Chen, Otmar Loffeld, Holger Nies, 2020, Remote. Sens..

A Bistatic Point Target Reference Spectrum for General Bistatic SAR Processing

Otmar Loffeld, Ashraf Samarah, Robert Wang, 2008, IEEE Geoscience and Remote Sensing Letters.

Compact Ground-Based Interferometric Synthetic Aperture Radar: Short-range structural monitoring

Mihai Datcu, Andrei Anghel, Weiming Tian, 2019, IEEE Signal Processing Magazine.

An imaging algorithm based on keystone transform for one-stationary bistatic SAR of spotlight mode

Otmar Loffeld, Xiaolan Qiu, Holger Nies, 2012, EURASIP J. Adv. Signal Process..

Bistatic point target reference spectrum in the presence of trajectory deviations

Otmar Loffeld, Robert Wang, Holger Nies, 2009 .

Focusing Bistatic SAR Data in Airborne/Stationary Configuration

Joachim H. G. Ender, Jens Klare, Otmar Loffeld, 2010, IEEE Transactions on Geoscience and Remote Sensing.

Development and experiments of a passive SAR receiver system in a bistatic spaceborne/stationary configuration

Otmar Loffeld, Holger Nies, Joachim Schiller, 2010, 2010 IEEE International Geoscience and Remote Sensing Symposium.

Chirp-Scaling Algorithm for Bistatic SAR Data in the Constant-Offset Configuration

Joachim H. G. Ender, Otmar Loffeld, Robert Wang, 2009, IEEE Transactions on Geoscience and Remote Sensing.

A Solution for Bistatic Motion Compensation

Otmar Loffeld, Holger Nies, Koba Natroshvili, 2006, 2006 IEEE International Symposium on Geoscience and Remote Sensing.

Focusing bistatic SAR data in the wavenumber domain using linearized weighted LBF

Otmar Loffeld, Jinshan Ding, Holger Nies, 2009, 2009 IEEE Radar Conference.

Development of a deeply-coupled GPS/INS integration algorithm using quaternions

Yuhong Yang, Otmar Loffeld, Holger Nies, 2013, Proceedings of the 16th International Conference on Information Fusion.

Simulation based Optimization of Bi- and Multistatic SAR-Missions

Wolfgang Wiechert, Otmar Loffeld, Holger Nies, 2008 .

A New Approach for Kalman Filter Based Phase Unwrapping Applied to Multi-Baseline InSAR

Otmar Loffeld, Holger Nies, Thomas Espeter, 2014 .

The bistatic aspect of the TanDEM-X mission

Otmar Loffeld, Holger Nies, Koba Natroshvili, 2007, 2007 IEEE International Geoscience and Remote Sensing Symposium.

Comparison of doppler centroid estimators in bistatic airborne SAR

Otmar Loffeld, Holger Nies, Koba Natroshvili, 2005, Proceedings. 2005 IEEE International Geoscience and Remote Sensing Symposium, 2005. IGARSS '05..

Considering the Linear and Quadratic Combination of Stationary Points for the Bistatic SAR Processing

Otmar Loffeld, Holger Nies, Robert Wang, 2010 .

First Results of Passive Radar Imaging and Tracking Using Geostationary Satellites

Otmar Loffeld, Holger Nies, Florian Behner, 2018, 2018 15th European Radar Conference (EuRAD).

Second-Order Motion Compensation in Bistatic Airborne SAR based on the Windowed Fourier-Transformation

Otmar Loffeld, Robert Wang, Holger Nies, 2008, IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium.

Analysis and Processing of Spaceborne/Airborne Bistatic SAR Data

Otmar Loffeld, Ashraf Samarah, Holger Nies, 2008, IGARSS 2008 - 2008 IEEE International Geoscience and Remote Sensing Symposium.

Processing the Azimuth-Variant Bistatic SAR Data by Using Monostatic Imaging Algorithms Based on Two-Dimensional Principle of Stationary Phase

Joachim H. G. Ender, Jens Klare, Otmar Loffeld, 2011, IEEE Transactions on Geoscience and Remote Sensing.

Focus FMCW SAR Data Using the Wavenumber Domain Algorithm

Helmut Essen, Otmar Loffeld, Robert Wang, 2010, IEEE Transactions on Geoscience and Remote Sensing.

Considerations on the validity constraints for the bistatic SAR processing

Otmar Loffeld, Robert Wang, Holger Nies, 2009, 2009 International Conference on Information and Communication Technologies.

A noise based transmitter system for the HITCHHIKER project

Otmar Loffeld, Holger Nies, Florian Behner, 2012 .

Motion Compensation in Bistatic SAR for the Hybrid Experiment

Otmar Loffeld, Robert Wang, Holger Nies, 2008 .

Parallel computation of synthetic SAR raw data

Wolfgang Wiechert, Otmar Loffeld, Holger Nies, 2007, 2007 IEEE International Geoscience and Remote Sensing Symposium.

Bistatic SAR Experiments With PAMIR and TerraSAR-X—Setup, Processing, and Image Results

Joachim H. G. Ender, Jens Klare, Otmar Loffeld, 2010, IEEE Transactions on Geoscience and Remote Sensing.

Polarimetric and interferometric applications in a bistatic hybrid SAR mode using Terrasar-X

Otmar Loffeld, Robert Wang, Holger Nies, 2010, 2010 IEEE International Geoscience and Remote Sensing Symposium.

Bistatic Space Borne / Airborne Experiment: Geometrical Modeling and Simulation

Otmar Loffeld, Holger Nies, Koba Natroshvili, 2006, 2006 IEEE International Symposium on Geoscience and Remote Sensing.

GPu-based framework for interactive visualization of SAR data

Andreas Kolb, Holger Nies, Martin Lambers, 2007, 2007 IEEE International Geoscience and Remote Sensing Symposium.

Characterization of the PAZ X-Band SAR Using the HITCHHIKER Ground Receiver

Otmar Loffeld, Holger Nies, Simon Reuter, 2022, IEEE Geoscience and Remote Sensing Letters.

Two Dimensional Kalman Filter Approach for Phase Unwrapping of TerraSAR-X Data

Otmar Loffeld, Holger Nies, Yu Wang, 2008 .

Performance Analysis of the Validity Constraints of the Bistatic SAR Processing

Otmar Loffeld, Robert Wang, Holger Nies, 2008 .

Focusing results and analysis of advanced bistatic SAR experiments in spaceborne or airborne /airborne or stationary configurations

Joachim H. G. Ender, Jens Klare, Otmar Loffeld, 2010 .

Hybrid Bistatic SAR Experiment TerraPAMIR - Geometric Description and Point Target Simulation

Otmar Loffeld, Holger Nies, Ulrich Gebhardt, 2008 .

SAR Experiments in a Bistatic Hybrid Configuration for Generating PolInSAR Data with TerraSAR-X Illumination

Otmar Loffeld, Robert Wang, Holger Nies, 2010 .