在分析几种常用的气象回波谱矩估计算法的基础上，提出了一种改进的频域估计算法。

Then we propose an improved spectral processing algorithm based on comprehensive analysis of several commonly used SM estimators.

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首先简要介绍了气象雷达的雷达方程、气象雷达探测气象目标的基本原理、气象目标回波的时域频域特性和气象回波信号的模拟方法。

Firstly, we introduce the radar equation of weather radar, the basic principles of detection weather targets, the time and frequency domain properties of weather radar echo and its simulation methods.

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试验表明，该方案是解决天气雷达回波图像存储和远程传输的一种有效途径，并在气象业务工作中发挥了重要作用。

Tests indicate that this scheme is one of the effective ways to solve the problems of storage and long-distance transmission of weather radar echo images.

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