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在许多频率估值算法中,估值范围和估值精度是难以同时兼顾的一对矛盾.该文通过对这一问题进行分析,提出了一种具有高性能和低复杂度的估值算法.仿真结果表明,对于数据辅助的BPSK,在EB/N0＞ 0DB时,本算法的频差估值范围为符号速率的±40％ ,估值方差接近克拉美?劳界(CRB),与文献［2］提出的算法相比,在相同的性能下,其硬件实现代价减小了3~5 倍“,”The demand for a wide estimation range and an accurate estimation are always uncompatible in many frequency estimation algorithms.In this paper,this problem is fully analyzed and a new solution with high performance and easy implementation is proposed.Computer simulation shows that in the condition of data aided BPSK with E b/ N 0 higher than 0dB,its estimation range is about ±40% of symbol rate and its accuracy is close to the Cramer Rao bound(CRB).Having the same performance as the algorithm proposed in reference [2] ,its complexity is reduced to 1/3~1/5 of the former one.