摘要 :
In this paper, the methodology, which uses GBSAR system to monitor the micro deformation of the scenario, was presented both theoretically and experimentally. In the process, the persistent scatterer (PS) technology was utilized t...
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In this paper, the methodology, which uses GBSAR system to monitor the micro deformation of the scenario, was presented both theoretically and experimentally. In the process, the persistent scatterer (PS) technology was utilized to obtain the deformation of the scene. Firstly, the full basic PS process chain for deformation generation is presented. Secondly, the ground-based SAR system and the data acquisition of geometry are described briefly. Furthermore, the theoretical developments are complemented with the process of real data which is acquired in the experiment. Finally, the comparison between experimental results and local measurements is discussed, which demonstrated the feasibility of our GBSAR system to obtain high-precision deformation.
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摘要 :
In this paper, the methodology, which uses GBSAR system to monitor the micro deformation of the scenario, was presented both theoretically and experimentally. In the process, the persistent scatterer (PS) technology was utilized t...
展开
In this paper, the methodology, which uses GBSAR system to monitor the micro deformation of the scenario, was presented both theoretically and experimentally. In the process, the persistent scatterer (PS) technology was utilized to obtain the deformation of the scene. Firstly, the full basic PS process chain for deformation generation is presented. Secondly, the ground-based SAR system and the data acquisition of geometry are described briefly. Furthermore, the theoretical developments are complemented with the process of real data which is acquired in the experiment. Finally, the comparison between experimental results and local measurements is discussed, which demonstrated the feasibility of our GBSAR system to obtain high-precision deformation.
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摘要 :
According to Doppler centroid shift and Doppler spectrum split, this paper proposes an adaptive Doppler Nonuniform
Bit Allocation (NBA) approach based on one dimensional Look-Up Table (LUT). Combined with one
dimensional quantiz...
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According to Doppler centroid shift and Doppler spectrum split, this paper proposes an adaptive Doppler Nonuniform
Bit Allocation (NBA) approach based on one dimensional Look-Up Table (LUT). Combined with one
dimensional quantization and coding LUT, NBA approach forms the adaptive compression algorithm in frequency
domain. Meanwhile, this paper deduces the analytic function of the frequency spectrum of the echoes in
range and provides with the general scheme for its NBA. Numerical experiments results based on real SAR data
show that new algorithm has higher SNR and better robustness than FFT-BAQ. Theoretical analysis indicates
that the calculation load of new algorithm is small so it can be easily applied in engineering.
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摘要 :
In this paper, the saturation characteristic of saturated SAR raw data is discussed and a new method based on optimal quantization theory to restore the raw data is proposed. A flow chart shows the procession of the algorithm. Exp...
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In this paper, the saturation characteristic of saturated SAR raw data is discussed and a new method based on optimal quantization theory to restore the raw data is proposed. A flow chart shows the procession of the algorithm. Experimental results show that the performances of radar signal processing using the restored data are better than those of traditional means using the raw data.
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