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微波辐射计检测的温度补偿技术

DOI: 10.13190/jbupt.200802.5.sunhy, PP. 5-9

Keywords: 微波辐射计,平方率检波系统,非线性系数,温度补偿,Chebyshev拟合算法

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Abstract:

针对微波辐射计检波系统在环境温度变化下产生的非线性测量误差,提出了使用切比雪夫拟合算法对检波系统进行补偿。从辐射计检波系统未经补偿与切比雪夫多项式拟合算法进行温度补偿后,在工作动态范围内的输出电压曲线可见,该方法不但减少了检波系统受环境温度影响所产生的误差,而且消除了硬件补偿过程中的系统噪声,进一步提高了微波辐射计的准确性和线性度,满足了微波辐射计对地、空实时性探测需求。

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