针对通信对抗中的实际应用,给出了一种联合算法估计跳频信号跳周期,与传统跳周期估计方法不同,该方法通过对信号进行谱图重排变换,然后提取时频脊线并对其进行小波变换,精确定位跳变时刻,最后得到跳周期的准确估计.仿真结果表明,该方法具有较好的抗噪性能,在信噪比大于-1db时能得到准确的参数估计.%To aim at the actual application in communication countermeasure, a united estimation frequency hopping signal algorithm which is different from tradition methods was given. Based on time-frequency reassignment technology, the new algorithm estimate hopping duration accurately by extracting the time-frequency ridge and getting its wavelet transform. Simulation results show that, this method has better anti-noise performance and can get accurate parameter estimation when the signal-to-noise ratio is greater than -1 dB.
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