研究目的
Investigating the utility of the spherical harmonic model for describing the SAR imaging process, specifically for three-dimensional holographic SAR imaging.
研究成果
The spectral projection model based on spherical harmonics effectively describes holographic SAR imaging processes, allowing for spatial localization and resolution with measurements that have full geometric diversity. The model's ability to separate the spatial characteristics of sources from observations provides a powerful tool for analyzing and computing SAR images.
研究不足
The model assumes narrowband SAR systems where pulse bandwidth is too narrow to produce any significant localization in radar range. The study also ignores the impact of polarization.
1：Experimental Design and Method Selection:
The study develops a spectral projection model based on spherical harmonics for holographic SAR imaging, utilizing the addition theorem for spherical harmonics to describe the SAR measurement process.
2：Sample Selection and Data Sources:
Simulations are conducted for different SAR imaging configurations to analyze and verify the proposed spectral projection model.
3：List of Experimental Equipment and Materials:
MATLAB simulations are used for holographic SAR imaging.
4：Experimental Procedures and Operational Workflow:
The SAR measurements are generated using the spectral projection model, and images are processed using matched filter and inversion filter techniques.
5：Data Analysis Methods:
The properties of the source and observation matrices are analyzed to understand the imaging process and the information content of the SAR measurements.
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