So, for the same SNR, edge techniques can improve the measurement accuracy of Brillouin frequency shift greatly comparing with the conventional detection techniques.
所以，在相同信噪比下，与常规检测技术相比，边缘检测技术可以大大提高布里渊频移测量精度。
A presence detection algorithm based on the estimation of cyclic frequency for Phase Shift-Keying (PSK) signals in additive white Gaussian noise (AWGN) is proposed in this paper.
根据信号的循环平稳特性，本文提出一种加性高斯白噪声信道中基于循环频率估计的PS K信号存在性检测算法。
Test results demonstrate that this system can increase the accuracy of railway frequency-shift signal detection effectively, and has high integration level and reliability.
测试结果表明本系统能有效地提高铁路移频信号检测的准确度，具有高集成度和高可靠性。
With the accelerating of the speed, frequency-shift signal detection system established based on traditional detection method is facing great challenges in China.
随着我国铁路的提速，基于传统检测方法建立的移频信号检测系统面临着极大的考验。
Based on the characteristics of Domestic frequency shift key track signal, this paper presents a kind of appropriate detection method for our national train signal — Time-frequency analysis.
根据移频轨道信号的特点，本文提出了一种适合我国铁路信号的检测方法——时频分析的方法。
An underwater acoustic modem system is built by employing DSP Software based on M-ary frequency-shift-key (MFSK) modulation and non-coherent detection.
采用DSP软件方法，研制了一套基于MFSK调制和非相干能量检测的水声调制解调系统。
An underwater acoustic modem system is built by employing DSP Software based on M-ary frequency-shift-key (MFSK) modulation and non-coherent detection.
采用DSP软件方法，研制了一套基于MFSK调制和非相干能量检测的水声调制解调系统。
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