本文提出一种简单的跟踪滤波器电路，该电路可用于多普勒雷达，主要由开关式带通滤波器和锁相环组成。

This paper presents a simple tracking filter circuit, which is applicable to Doppler radar sets and consists mainly of a switched bandpass filter and a phase-locked loop.

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利用多普勒雷达体扫描资料对风暴进行实时地自动识别、跟踪、结构分析和临近预报。

A methodology is presented for the real time, automated identification, structure analysis, tracking and short range forecasting of storms with Doppler weather radar volume scan data.

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实验表明，此方法在实现对卫星多普勒频偏跟踪中具有更大的优越性。

Experimental results show that this method has advantages in achieving the Doppler shift of the satellite tracking.

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