Parameter estimation method for frequency hopping signal based on time-frequency transform and waveform shaping

Wang Chuanchuan; Zhang Kuanqiao; Wang Manxi

doi:10.11884/HPLPB202436.240079

Volume 36 Issue 9

Aug. 2024

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Wang Chuanchuan, Zhang Kuanqiao, Wang Manxi. Parameter estimation method for frequency hopping signal based on time-frequency transform and waveform shaping[J]. High Power Laser and Particle Beams, 2024, 36: 099001. doi: 10.11884/HPLPB202436.240079

Citation:

Wang Chuanchuan, Zhang Kuanqiao, Wang Manxi. Parameter estimation method for frequency hopping signal based on time-frequency transform and waveform shaping[J]. High Power Laser and Particle Beams, 2024, 36: 099001. doi: 10.11884/HPLPB202436.240079

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Parameter estimation method for frequency hopping signal based on time-frequency transform and waveform shaping

doi: 10.11884/HPLPB202436.240079

State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, Luoyang 471003, China

Received Date: 2024-03-06
Accepted Date: 2024-07-27
Rev Recd Date: 2024-07-23

Available Online: 2024-05-16

Publish Date: 2024-08-16

Abstract

Abstract

In view of the adverse effect of noise on frequency hopping signal parameter estimation, a frequency hopping signal parameter estimation method based on time-frequency transform and waveform shaping is proposed. The time-frequency ridge is calculated by the short-time Fourier transform of the frequency hopping signal, the waveform shaping of the time-frequency ridge is processed to eliminate the false time-hopping interference caused by noise, and the hopping period sequence is obtained through the time-hopping sequence. The histogram of the hopping period sequence is calculated, and the value with the most occurrence times is selected to calculate the hopping speed of the frequency hopping signal. According to the hopping period sequence, signal of each hop is extracted respectively, and then the frequency is estimated. The effectiveness of the proposed method is verified by experiments, and the ideal estimation results of hopping time, hopping speed and frequency of frequency hopping signal under low signal-to-noise ratio are guaranteed by comprehensive use of time-frequency transformation and waveform shaping technology.
- frequency hopping signal,
- parameter estimation,
- waveform shaping,
- time hopping,
- hopping speed

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References(12)

References

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