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Study on Ground Moving Target Indication and Imaging Technique of Airborne SAR

Development of SAR (a) High Resolution (b) Multifunction (c) Miniaturization (d) Multi-band, Multi-polar Development of GMTI and GMTIm Techniques Technique Backgrounds Recent Development of GMTI and GMTIm Technique Book Structure and Organization References SAR Ground Moving Target Indication and Imaging Theory Introduction Principle of SAR Signal Analysis of Moving Target in SAR Signal Model of a Moving Target Doppler Centroid Doppler Modulation Rate RCM Principle of Existing GMTI Algorithms Principle of Single-Antenna GMTI Algorithms (a) Spectrum filtering algorithm (b) RDM algorithm (c) Time-frequency analysis algorithm CFAR Detection Principle of GMTIm Algorithms RCMC of Moving Targets Motion Parameter Estimation Conclusion References Fast Moving Target Indication and Imaging in Stripmap SAR Introduction Echo Model of Fast Moving Target Doppler Centroid Estimation of the Clutter Principle of Energy Balancing Method Adaptive Doppler Centroid Estimation Algorithm Based on Curve Fitting Simulation Results and Analysis Multiple Moving Target Indication and Spectrum Extraction The Two-Step GMTI Algorithm Real Data Processing Results Fast Moving Target Imaging Algorithm Based on Hough Transform and Third-Order PFT Principle of the Proposed Algorithm.(a) Principle of the Hough transform (b) Principle of the PFT Processing Steps of the Algorithm Results of the Simulation and Real Data Processing Conclusion References Ground Moving Target Indication and Imaging in WAS Mode Introduction Key Technique in Airborne SAR Mechanic Scanning Mode Mechanic Scanning Mode and the Principle of DBS System Design Scheme of the Airborne Mechanic Scanning SAR Real-Time DBS Algorithm Based on CZT The Modification of Traditional DBS Algorithm.Principle of the Proposed Algorithm GMTI and Parameter Estimation Algorithm Based on Multiple Revisits Conclusion References GMTI and GMTIm in FMCW SAR Introduction Principle of FMCW SAR and Signal Model Principle of FMCW SAR Signal Model and Analysis Nonlinearity Correction of FMCW SAR Analysis of the Nonlinearity Problem.Principle of Derivative Algorithm Nonlinearity Correction Algorithm Based on Homomorphic Deconvolution Along-Track Moving Target Indication and Imaging in FMCW SAR Signal Model of Moving Targets in FMCW SAR Along-Track Moving Target Indication Algorithm in FMCW SAR Conclusion References Non-ideal Motion Error Analysis in GMTIm Introduction Motion Error Compensation in Stationary SAR Imaging Motion Error Analysis in Airborne SAR (a) Inconstant velocity error of the platform (b) Non-ideal Trajectory Error Principle of PGA (a) Target Selection and Circular Shifting (b) Adding Windows (c) Phase Gradient Estimation (d) Iterated Phase Correction Signal Model of Moving Target with Non-ideal Motion Error Motion Error Analysis Platform Velocity Error Cross-Track Velocity Error of the Moving Target Non-ideal Motion Error Estimation and Correction Algorithm Algorithm. Principle Simulation and Raw Data Processing Conclusion References

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SAR Ground Moving Target Indication and Imaging Theory
Abstract This chapter mainly introduces the basic principles of SAR imaging, signal model, GMTI and GMTIm algorithms. The geometries of stationary and moving targets are established, and the characters of their echoes are analyzed. Based on the analysis, three classical single-channel GMTI algorithms...
(Study on Ground Moving Target Indication and Imaging Technique of Airborne SAR)
Ground Moving Target Indication and Imaging in WAS Mode
Abstract This chapter mainly discusses the GMTI and GMTIm algorithms in WAS mode. The signal mode of moving target is established in WAS mode, and a new system design scheme is presented to maintain the sharpening ratio constant without increasing the system and signal processing complexity. Moreover,...
(Study on Ground Moving Target Indication and Imaging Technique of Airborne SAR)
Fast Moving Target Indication and Imaging in Stripmap SAR
Abstract This chapter mainly discusses the GMTI and GMTIm algorithms in stripmap SAR/GMTI mode. The signal model of fast moving targets in stripmap SAR/GMTI mode is established, and the impacts of fast cross-track velocities on the Doppler ambiguity and higher order azimuth phase are analyzed....
(Study on Ground Moving Target Indication and Imaging Technique of Airborne SAR)
Along-Track Moving Target Indication and Imaging in FMCW SAR
Signal Model of Moving Targets in FMCW SAR The geometry of a moving target in FMCW SAR is the same as that in a pulse SAR system, as shown in Figs. 2.2 and 2.3. To briefly compare the additional phase error of FMCW SAR, the accelerations are neglected, and the instantaneous slant range of a moving...
(Study on Ground Moving Target Indication and Imaging Technique of Airborne SAR)
Fast Moving Target Imaging Algorithm Based on Hough Transform and Third-Order PFT
Principle of the Proposed Algorithm. In conventional GMTIm algorithms [8-10], the basic processing steps: firstly, the RCMC is proceeded to compress the energy of the target into a single range gate; secondly, the parameters of the moving target is estimated by using the time-frequency analysis...
(Study on Ground Moving Target Indication and Imaging Technique of Airborne SAR)
Safety Is a Moving Target
Safety is, in a number of respects, a constantly moving target. As standards improve and concern for safety grows within a system, a larger number of events will come to be considered as safety issues. In a very real sense innovation and improving standards create new forms of harm in that there are...
(Safer Healthcare)
Heat Transfer Study for ADS Solid Target:
Surface Wettability and Its Effect on a Boiling Heat Transfer Abstract In relationship to a solid target cooling system of an accelerator-driven system (ADS), wettability effect on boiling heat transfer has been experimentally investigated by irradiation with ultraviolet and gamma rays (γ-rays). The...
(Nuclear Back-end and Transmutation Technology for Waste Disposal)
Signal Analysis of Moving Target in SAR
Signal Model of a Moving Target In a typical airborne SAR system, the synthetic aperture time is several seconds. During the synthetic aperture time, a target is radiated and reflected the microwave continuously. In most articles, the moving target is assumed to be moving with a constant velocity...
(Study on Ground Moving Target Indication and Imaging Technique of Airborne SAR)
Signal Model of a Moving Target
In a typical airborne SAR system, the synthetic aperture time is several seconds. During the synthetic aperture time, a target is radiated and reflected the microwave continuously. In most articles, the moving target is assumed to be moving with a constant velocity or a constant acceleration during the...
(Study on Ground Moving Target Indication and Imaging Technique of Airborne SAR)
RCMC of Moving Targets
The RCM of the moving target must be accurately corrected so as to get a focused image of the target. However, the RCM of the moving target is different from that of the clutter, and is unknown without the information of motion parameters. In most articles, the RCMC of moving targets is performed by...
(Study on Ground Moving Target Indication and Imaging Technique of Airborne SAR)