The motion error is one of the most important factors degrading the quality of low frequency UWB SAR images.
运动误差是造成低频超宽带合成孔径雷达成像质量降低的主要因素之一。
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.
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。
The wide accumulating azimuth Angle is one of the main characteristics of low frequency UWB SAR, so the effect of the antenna pattern on the system performance cannot be neglected.
低频uwb SAR系统具有较大的方位向积累角，天线方向图非均匀性对系统性能的影响不能忽略。
Finally, the information process model of the low frequency UWB-SAR is given, and antenna pattern and the impulse response function of the system are discussed.
最后研究了低频uwb - SAR系统信息处理模型。利用该模型分析了天线方向图和系统的冲击响应函数。
With the consideration of the characteristics of the low frequency UWB-SAR system, the radiometric calibration, polarimetric calibration and the motion status CAL.
本文充分考虑低频uwb - SAR系统的特点，从辐射校准，极化校准和运动状态校准等方面展开深入的研究。
Firstly, with the consideration of the frequency and aspect Angle dependent parameters of the low frequency UWB-SAR, the radar equation for calibration is proposed.
首先充分考虑了系统参量的频率和方位角特性，提出了适合低频uwb -SAR校准的雷达方程。
The low frequency, UWB and large processing angle result that the polarimetric calibration for regular SAR system cannot be used.
系统的低频特性，UWB特性和大处理角特性使得常规SAR极化校准不再适用。
The polarimetric calibration methods for low frequency UWB-SAR are studied in chapter 4. Firstly, polarimetric electromagnetic scattering characteristics of the calibrators are studied.
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 radiometric calibration methods of low frequency UWB-SAR are studied in chapter 3.
第三章研究了低频uwb - SAR系统的辐射校准问题。
The radiometric calibration methods of low frequency UWB-SAR are studied in chapter 3.
第三章研究了低频uwb - SAR系统的辐射校准问题。
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