低频超宽带合成孔径雷达辐射定标过程中，定标体的散射特性表现为低频谐振散射特性。
During the radiometric calibration of the low frequency UWB SAR system, the scattering model of the calibrators should be regarded as the low frequency resonance scattering.
第四章研究了低频UWB-SAR系统的极化校准问题。首先研究了定标体的多极化电磁散射特性。
The polarimetric calibration methods for low frequency UWB-SAR are studied in chapter 4. Firstly, polarimetric electromagnetic scattering characteristics of the calibrators are studied.
实验时采用已知rcs值的标准金属球作为定标体，使用相对定标法对系统进行外定标实验，得到定标数据。
A standard metal ball with known RCS value has been used as the calibration body in the external calibration experiment which used a relative calibration method and acquired the calibration data.
本文对国际上已有的各种定标方法进行了深入分析，这些分析主要集中在各方案所选用的定标体对定标效果的影响上。
The existent calibration approaches are introduced, and the influence on the calibration performance of different calibration bodies is analyzed thoroughly.
应用粒子模拟方法研究了电子束潘宁阱中的非中性等离子体的稳定状态及其定标关系。
A particle in cell code has been developed to simulate the steady state of electron plasmas in an electron beam Penning trap and to study its scaling law.
目前熔体洁净度-性能关系的研究以及与相应的熔体洁净度在线评定标准还有待深入探讨。
At present, melt purityproperty relationships as well as online evaluation standards of melt purity still need further study.
目前熔体洁净度-性能关系的研究以及与相应的熔体洁净度在线评定标准还有待深入探讨。
At present, melt purityproperty relationships as well as online evaluation standards of melt purity still need further study.
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