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介绍三种基于快速傅里叶变换(FFT)的开环抑制载波捕获技术,并对这些算法进行性能分析及仿真。结果表明,基于FFT的交错符号积分技术,在低符号信噪比时引入的信噪比损失最小,适用于深空接收机中抑制载波捕获。
Three open-loop suppressed carrier capture techniques based on Fast Fourier Transform (FFT) are introduced, and the performance analysis and simulation of these algorithms are introduced. The results show that the cross-symbol integration based on FFT has the least loss of signal-to-noise ratio when SNR is low, which is suitable for suppressing carrier capture in deep space receivers.