For improving the precision of the frequency measure, presents a frequency measure algorithm by integrating automatic adjusting the sampling parameter and spectrum correction.
为提高频率测量精确度，提出一种自动调整采样参数与频谱校正相结合的频率测量算法。
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It adopts auto adaptive step to track the frequency offset, so that it can shorten the AFC (Automaticfrequencycorrection) tracking period and improve frequency precision.
This paper describes in detail the design features of the multi-horizontal frequencyautomatic synchronizing system and the automatic S-correction circuit in GW500 color display terminal.