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SAR CHANNEL PHASE ERROR COMPENSATION METHOD FOR MULTICHANNEL SAR IN TIME DOMAIN BY FITTING POWER SPECTRUM DENSITY OF AZIMUTH SIGNAL
SAR CHANNEL PHASE ERROR COMPENSATION METHOD FOR MULTICHANNEL SAR IN TIME DOMAIN BY FITTING POWER SPECTRUM DENSITY OF AZIMUTH SIGNAL
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机译：拟合方位角功率谱密度的时域多通道SAR SAR信道相位误差补偿方法
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摘要
The channel phase error compensation method of the multi-channel SAR (synthetic aperture radar) system of the present invention comprises the steps of receiving measurement orientation samples through a plurality of channels of the multi-channel SAR system, and pre-set phase compensation for each channel in the measurement orientation samples Generating compensated azimuth samples by applying a variable, arranging the compensated azimuth samples according to the order of sampling positions, and generating a compensated sample sequence, interpolating an azimuth signal in a time domain based on the compensated sample sequence, and interpolating Calculating a power spectral density of the azimuth signal, defining a cost function of the interpolated azimuth signal based on the power spectral density and the antenna pattern of the multi-channel SAR system, and confirming that the cost function has a minimum value And if the cost function has the minimum value, the beam And determining the final bearing signal as the final bearing signal.
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