System performance assessment method of polarized interferometric synthetic aperture radar

Abstract

The invention discloses a system performance assessment method of a polarized interferometric synthetic aperture radar and relates to the technology of the synthetic aperture radar. The method firstly builds a relationship between the system parameters of the polarized interferometric synthetic aperture radar and the characterization parameters of the system interference performance (interference coherence and interference phase estimated standard deviation); the parameters of a typical application context are given, and data are acquired through a simplified effective polarized interference data simulation method; then the data are used to calculate the parameters of the typical application context again; and through the comparison, the parameters are analyzed and the performance is estimated so as to assess the actual application performance of the system of the polarized interferometric synthetic aperture radar. The method disclosed by the invention is simple in principle, is convenient to calculate and can be applicable to the performance assessment and comparison as well as feasibility analysis of the typical application of the future satellite-borne or sky-borne polarized interferometric synthetic aperture radar.

Description

technical field [0001] The invention relates to the technical field of synthetic aperture radar, and is a radar system performance evaluation method closely combining the characteristics and typical applications of polarization interference synthetic aperture radar. Background technique [0002] Synthetic aperture radar has the advantages of all-weather, all-time, and high resolution. It has developed rapidly in the past fifty years and has been widely used in important areas of national economic life such as military reconnaissance, remote sensing mapping, and geological disaster reduction. The polarimetric interferometric synthetic aperture radar is a combination of the traditional polarimetric synthetic aperture radar and the interferometric synthetic aperture radar. Radar is sensitive to the height, motion, and deformation information of scatterers, so it has developed rapidly in the past ten years and has become one of the research hotspots in the field of synthetic ape...

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Problems solved by technology

[0006] Krieger et al. proposed a system performance analysis method for phase tubes based on the ability of polarization interferometric synthetic aperture radar to distinguish scattering centers at different heights [8，9] , but this method is not directly aimed at the evaluation method of typical applications, it is similar to the evaluation method of "decoherence analysis" in the performance evaluation of interferometric aperture radar system

At present, there are few evaluation methods directly aimed at typical applications. The main difficulty is that the typical applications of polarimetric interferometric synthetic aperture radar (such as forest height) and radar system parameters use complex coherent scattering models. [10，11] There is no direct quantitative relational expression between the system parameters and the elevation error like the interferometric SAR, so it is difficult to analytically analyze the application performance of the polarimetric interferometric SAR system

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