Signal-to-Noise Ratio Equalization for TOPSAR Mode Using a Nonuniform Steering Rate

Ruiz Rodon J.; Broquetas A.; Gonzalez Arbesu J. M.; Closa J.; Labriola M.

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Signal-to-Noise Ratio Equalization for TOPSAR Mode Using a Nonuniform Steering Rate

机译：使用非均匀转向率的TOPSAR模式的信噪比均衡

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摘要

In this letter, an optimized scanning in terrain observation by progressive scan synthetic aperture radar (TOPSAR) mode is studied. A nonuniform steering rate of the radar array antenna in the along-track direction is proposed in order to obtain constant radiometric sensitivity and signal-to-noise ratio. This is achieved owing to the longer integration time of the echoes received at both ends of the antenna azimuth sweep. By optimizing iteratively the array discrete steering rate law, the radiometric impact of the array basic element pattern (subarray pattern) can be accurately compensated. First, simulation results are presented to validate the nonuniform steering TOPSAR.

机译：在本文中，研究了通过逐行扫描合成孔径雷达（TOPSAR）模式在地形观测中进行的优化扫描。为了获得恒定的辐射灵敏度和信噪比，提出了雷达阵列天线沿航迹方向的不均匀转向率。这是由于在天线方位角扫描两端接收到的回波的积分时间较长而实现的。通过迭代优化阵列离散转向率定律，可以精确地补偿阵列基本元素图案（子阵列图案）的辐射影响。首先，给出仿真结果以验证非均匀转向TOPSAR。

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来源
《Geoscience and Remote Sensing Letters, IEEE》 |2012年第2期|p.199-203|共5页
作者
Ruiz Rodon J.; Broquetas A.; Gonzalez Arbesu J. M.; Closa J.; Labriola M.;
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作者单位

Remote Sensing Laboratory, Department of Signal Theory and Communications, Universitat Politècnica de Catalunya, Barcelona, Spain;

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原文格式 PDF
正文语种 eng
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关键词
Antenna array; array signal processing; remote sensing; synthetic aperture radar (SAR);

机译：天线阵列;阵列信号处理;遥感;合成孔径雷达（SAR）;

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Signal-to-Noise Ratio Equalization for TOPSAR Mode Using a Nonuniform Steering Rate

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